From 6fbb20a805be769d1b49503d053f2378a4547747 Mon Sep 17 00:00:00 2001
From: Sebastian Wiesner <sebastian@swsnr.de>
Date: Mon, 26 Oct 2020 22:08:39 +0100
Subject: [PATCH] Replace reqwest with ureq

ureq has less dependencies, builds faster and builds statically out of
the box; we no longer need the reqwest feature nor require curl in
static builds.

The only drawback is that we now have to deal with proxies manually.
---
 .github/workflows/release.yml |   3 +-
 .github/workflows/test.yml    |   9 +-
 CHANGELOG.md                  |  10 +
 Cargo.lock                    | 860 +++++++++++++---------------------
 Cargo.toml                    |  13 +-
 README.md                     |   1 -
 mdcat.1.adoc                  |  21 +-
 src/bin/mdcat/main.rs         |  15 -
 src/resources.rs              |  59 +--
 9 files changed, 365 insertions(+), 626 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 95d1eff7..16e97493 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,6 @@ jobs:
         include:
           - os: ubuntu-latest
             target: x86_64-unknown-linux-musl
-            flags: --no-default-features
           - os: macOS-latest
             target: x86_64-apple-darwin
           - os: windows-latest
@@ -37,7 +36,7 @@ jobs:
         shell: bash
         id: build
         run: |
-            OUTDIR="$(cargo build --locked --target '${{ matrix.target }}' ${{ matrix.flags }} --release --message-format=json-render-diagnostics |
+            OUTDIR="$(cargo build --locked --target '${{ matrix.target }}' --release --message-format=json-render-diagnostics |
                 jq -r 'select(.out_dir) | select(.package_id | startswith("mdcat ")) | .out_dir')"
             echo "::set-output name=outdir::$OUTDIR"
       - name: Strip binary
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 17a147e8..6782b332 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -66,7 +66,6 @@ jobs:
             os: ubuntu-latest
           - target: x86_64-unknown-linux-musl
             os: ubuntu-latest
-            flags: --no-default-features
           - target: x86_64-apple-darwin
             os: macOS-latest
           - target: x86_64-pc-windows-msvc
@@ -98,22 +97,22 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: build
-          args: --all-targets --locked --target ${{ matrix.target }} ${{ matrix.flags }}
+          args: --all-targets --locked --target ${{ matrix.target }}
       # Lint
       - name: Clippy
         uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          args: --all-targets --locked --target ${{ matrix.target }} ${{ matrix.flags }}
+          args: --all-targets --locked --target ${{ matrix.target }}
           name: clippy-${{ matrix.rust}}-${{ matrix.target }}
       # Test
       - name: Test
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --locked --target ${{ matrix.target }} ${{ matrix.flags }}
+          args: --locked --target ${{ matrix.target }}
       - name: Format sample
         uses: actions-rs/cargo@v1
         with:
           command: run
-          args: --target ${{ matrix.target }} ${{ matrix.flags }} -- sample/common-mark.md
+          args: --target ${{ matrix.target }} -- sample/common-mark.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4d1e557..64e71757 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,16 @@ To publish a new release run `scripts/release` from the project directory.
 
 ## [Unreleased]
 
+### Changed
+- Replace `reqwest` with `ureq` to fetch images via HTTP/HTTPS (see [GH-169]);
+    the latter has considerably less dependencies and builds faster.
+    It also builds statically out of the box, hence the static musl builds no longer require `curl` to fetch images.
+    
+### Removed
+- The `reqwest` cargo feature, see above and [GH-169].
+
+[GH-169]: https://github.com/lunaryorn/mdcat/pull/169
+
 ## [0.22.1] – 2020-10-17
 
 ### Fixed
diff --git a/Cargo.lock b/Cargo.lock
index 5c43c7b3..2a803b35 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -27,7 +27,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 dependencies = [
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -36,7 +36,7 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 dependencies = [
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -45,31 +45,30 @@ version = "1.0.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1fd36ffbb1fb7c834eac128ea8d0e310c5aeb635548f9d58861e1308d46e71c"
 
-[[package]]
-name = "async-compression"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9021768bcce77296b64648cc7a7460e3df99979b97ed5c925c38d1cc83778d98"
-dependencies = [
- "bytes",
- "flate2",
- "futures-core",
- "memchr",
- "pin-project-lite",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
+[[package]]
+name = "base-x"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b20b618342cf9891c292c4f5ac2cde7287cc5c87e87e9c769d617793607dec1"
+
 [[package]]
 name = "base64"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
 
+[[package]]
+name = "base64"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+
 [[package]]
 name = "bincode"
 version = "1.3.1"
@@ -119,12 +118,6 @@ version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
-[[package]]
-name = "bytes"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
-
 [[package]]
 name = "cc"
 version = "1.0.61"
@@ -147,6 +140,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "chunked_transfer"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7477065d45a8fe57167bf3cf8bcd3729b54cfcb81cca49bda2d038ea89ae82ca"
+
 [[package]]
 name = "clap"
 version = "2.33.3"
@@ -164,6 +163,39 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
+[[package]]
+name = "const_fn"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce90df4c658c62f12d78f7508cf92f9173e5184a539c10bfe54a3107b3ffd0f2"
+
+[[package]]
+name = "cookie"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1373a16a4937bc34efec7b391f9c1500c30b8478a701a4f44c9165cc0475a6e0"
+dependencies = [
+ "percent-encoding",
+ "time",
+ "version_check",
+]
+
+[[package]]
+name = "cookie_store"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3818dfca4b0cb5211a659bbcbb94225b7127407b2b135e650d717bfb78ab10d3"
+dependencies = [
+ "cookie",
+ "idna",
+ "log",
+ "publicsuffix",
+ "serde",
+ "serde_json",
+ "time",
+ "url",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.7.0"
@@ -263,10 +295,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 
 [[package]]
-name = "dtoa"
-version = "0.4.6"
+name = "discard"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134951f4028bdadb9b84baf4232681efbf277da25144b9b0ad65df75946c422b"
+checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
 
 [[package]]
 name = "either"
@@ -275,12 +307,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
 [[package]]
-name = "encoding_rs"
-version = "0.8.24"
+name = "env_proxy"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a51b8cf747471cb9499b6d59e59b0444f4c90eba8968c4e44874e92b5b64ace2"
+checksum = "3a5019be18538406a43b5419a5501461f0c8b49ea7dfda0cfc32f4e51fc44be1"
 dependencies = [
- "cfg-if",
+ "log",
+ "url",
+]
+
+[[package]]
+name = "error-chain"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d2f06b9cac1506ece98fe3231e3cc9c4410ec3d5b1f24ae1c8946f0742cdefc"
+dependencies = [
+ "version_check",
 ]
 
 [[package]]
@@ -331,88 +373,6 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
-[[package]]
-name = "foreign-types"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
-dependencies = [
- "foreign-types-shared",
-]
-
-[[package]]
-name = "foreign-types-shared"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
-
-[[package]]
-name = "fuchsia-zircon"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
-dependencies = [
- "bitflags",
- "fuchsia-zircon-sys",
-]
-
-[[package]]
-name = "fuchsia-zircon-sys"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-
-[[package]]
-name = "futures-channel"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7a4d35f7401e948629c9c3d6638fb9bf94e0b2121e96c3b428cc4e631f3eb74"
-dependencies = [
- "futures-core",
-]
-
-[[package]]
-name = "futures-core"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d674eaa0056896d5ada519900dbf97ead2e46a7b6621e8160d79e2f2e1e2784b"
-
-[[package]]
-name = "futures-io"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fc94b64bb39543b4e432f1790b6bf18e3ee3b74653c5449f63310e9a74b123c"
-
-[[package]]
-name = "futures-sink"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d8764258ed64ebc5d9ed185cf86a95db5cac810269c5d20ececb32e0088abbd"
-
-[[package]]
-name = "futures-task"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dd26820a9f3637f1302da8bceba3ff33adbe53464b54ca24d4e2d4f1db30f94"
-dependencies = [
- "once_cell",
-]
-
-[[package]]
-name = "futures-util"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a894a0acddba51a2d49a6f4263b1e64b8c579ece8af50fa86503d52cd1eea34"
-dependencies = [
- "futures-core",
- "futures-io",
- "futures-task",
- "memchr",
- "pin-project",
- "pin-utils",
- "slab",
-]
-
 [[package]]
 name = "gethostname"
 version = "0.2.1"
@@ -420,7 +380,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e692e296bfac1d2533ef168d0b60ff5897b8b70a4009276834014dd8924cc028"
 dependencies = [
  "libc",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -460,25 +420,6 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "h2"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "993f9e0baeed60001cf565546b0d3dbe6a6ad23f2bd31644a133c641eccf6d53"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "futures-sink",
- "futures-util",
- "http",
- "indexmap",
- "slab",
- "tokio",
- "tokio-util",
- "tracing",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.9.1"
@@ -494,76 +435,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "http"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28d569972648b2c512421b5f2a405ad6ac9666547189d0c5477a3f200f3e02f9"
-dependencies = [
- "bytes",
- "fnv",
- "itoa",
-]
-
-[[package]]
-name = "http-body"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13d5ff830006f7646652e057693569bfe0d51760c0085a071769d142a205111b"
-dependencies = [
- "bytes",
- "http",
-]
-
-[[package]]
-name = "httparse"
-version = "1.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
-
-[[package]]
-name = "httpdate"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
-
-[[package]]
-name = "hyper"
-version = "0.13.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f3afcfae8af5ad0576a31e768415edb627824129e8e5a29b8bfccb2f234e835"
-dependencies = [
- "bytes",
- "futures-channel",
- "futures-core",
- "futures-util",
- "h2",
- "http",
- "http-body",
- "httparse",
- "httpdate",
- "itoa",
- "pin-project",
- "socket2",
- "tokio",
- "tower-service",
- "tracing",
- "want",
-]
-
-[[package]]
-name = "hyper-tls"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d979acc56dcb5b8dddba3917601745e877576475aa046df3226eabdecef78eed"
-dependencies = [
- "bytes",
- "hyper",
- "native-tls",
- "tokio",
- "tokio-tls",
-]
-
 [[package]]
 name = "idna"
 version = "0.2.0"
@@ -603,21 +474,6 @@ dependencies = [
  "hashbrown",
 ]
 
-[[package]]
-name = "iovec"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "ipnet"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47be2f14c678be2fdcab04ab1171db51b2762ce6f0a8ee87c8dd4a04ed216135"
-
 [[package]]
 name = "itoa"
 version = "0.4.6"
@@ -643,16 +499,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "kernel32-sys"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -713,8 +559,9 @@ version = "0.22.1"
 dependencies = [
  "ansi_term 0.12.1",
  "anyhow",
- "base64",
+ "base64 0.12.3",
  "clap",
+ "env_proxy",
  "fehler",
  "gethostname",
  "goldenfile",
@@ -724,11 +571,11 @@ dependencies = [
  "mime",
  "pretty_assertions",
  "pulldown-cmark",
- "reqwest",
  "shell-words",
  "syntect",
  "term_size",
  "test-generator",
+ "ureq",
  "url",
 ]
 
@@ -753,16 +600,6 @@ version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
-[[package]]
-name = "mime_guess"
-version = "2.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2684d4c2e97d99848d30b324b00c8fcc7e5c897b7cbb5819b09e7c90e8baf212"
-dependencies = [
- "mime",
- "unicase",
-]
-
 [[package]]
 name = "miniz_oxide"
 version = "0.3.7"
@@ -782,66 +619,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "mio"
-version = "0.6.22"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fce347092656428bc8eaf6201042cb551b8d67855af7374542a92a0fbfcac430"
-dependencies = [
- "cfg-if",
- "fuchsia-zircon",
- "fuchsia-zircon-sys",
- "iovec",
- "kernel32-sys",
- "libc",
- "log",
- "miow",
- "net2",
- "slab",
- "winapi 0.2.8",
-]
-
-[[package]]
-name = "miow"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
-dependencies = [
- "kernel32-sys",
- "net2",
- "winapi 0.2.8",
- "ws2_32-sys",
-]
-
-[[package]]
-name = "native-tls"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b0d88c06fe90d5ee94048ba40409ef1d9315d86f6f38c2efdaad4fb50c58b2d"
-dependencies = [
- "lazy_static",
- "libc",
- "log",
- "openssl",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "security-framework",
- "security-framework-sys",
- "tempfile",
-]
-
-[[package]]
-name = "net2"
-version = "0.2.35"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ebc3ec692ed7c9a255596c67808dee269f64655d8baf7b4f0638e51ba1d6853"
-dependencies = [
- "cfg-if",
- "libc",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "num-integer"
 version = "0.1.43"
@@ -899,46 +676,19 @@ version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
 
-[[package]]
-name = "openssl"
-version = "0.10.30"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d575eff3665419f9b83678ff2815858ad9d11567e082f5ac1814baba4e2bcb4"
-dependencies = [
- "bitflags",
- "cfg-if",
- "foreign-types",
- "lazy_static",
- "libc",
- "openssl-sys",
-]
-
 [[package]]
 name = "openssl-probe"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
-[[package]]
-name = "openssl-sys"
-version = "0.9.58"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a842db4709b604f0fe5d1170ae3565899be2ad3d9cbc72dedc789ac0511f78de"
-dependencies = [
- "autocfg",
- "cc",
- "libc",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "output_vt100"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53cdc5b785b7a58c5aad8216b3dfa114df64b0b06ae6e1501cef91df2fbdf8f9"
 dependencies = [
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -947,51 +697,13 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
-[[package]]
-name = "pin-project"
-version = "0.4.27"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ffbc8e94b38ea3d2d8ba92aea2983b503cd75d0888d75b86bb37970b5698e15"
-dependencies = [
- "pin-project-internal",
-]
-
-[[package]]
-name = "pin-project-internal"
-version = "0.4.27"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
-dependencies = [
- "proc-macro2 1.0.24",
- "quote 1.0.7",
- "syn 1.0.44",
-]
-
-[[package]]
-name = "pin-project-lite"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e555d9e657502182ac97b539fb3dae8b79cda19e3e4f8ffb5e8de4f18df93c95"
-
-[[package]]
-name = "pin-utils"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
-
-[[package]]
-name = "pkg-config"
-version = "0.3.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
-
 [[package]]
 name = "plist"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b336d94e8e4ce29bf15bba393164629764744c567e8ad306cc1fdd0119967fd"
 dependencies = [
- "base64",
+ "base64 0.12.3",
  "chrono",
  "indexmap",
  "line-wrap",
@@ -1029,6 +741,12 @@ dependencies = [
  "output_vt100",
 ]
 
+[[package]]
+name = "proc-macro-hack"
+version = "0.5.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99c605b9a0adc77b7211c6b1f722dcb613d68d66859a44f3d485a6da332b0598"
+
 [[package]]
 name = "proc-macro2"
 version = "0.4.30"
@@ -1047,6 +765,19 @@ dependencies = [
  "unicode-xid 0.2.1",
 ]
 
+[[package]]
+name = "publicsuffix"
+version = "1.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3bbaa49075179162b49acac1c6aa45fb4dafb5f13cf6794276d77bc7fd95757b"
+dependencies = [
+ "error-chain",
+ "idna",
+ "lazy_static",
+ "regex",
+ "url",
+]
+
 [[package]]
 name = "pulldown-cmark"
 version = "0.8.0"
@@ -1058,6 +789,15 @@ dependencies = [
  "unicase",
 ]
 
+[[package]]
+name = "qstring"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d464fae65fff2680baf48019211ce37aaec0c78e9264c84a3e484717f965104e"
+dependencies = [
+ "percent-encoding",
+]
+
 [[package]]
 name = "quote"
 version = "0.6.13"
@@ -1172,43 +912,56 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
 dependencies = [
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
-name = "reqwest"
-version = "0.10.8"
+name = "ring"
+version = "0.16.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9eaa17ac5d7b838b7503d118fa16ad88f440498bf9ffe5424e621f93190d61e"
+checksum = "952cd6b98c85bbc30efa1ba5783b8abf12fec8b3287ffa52605b9432313e34e4"
 dependencies = [
- "async-compression",
- "base64",
- "bytes",
- "encoding_rs",
- "futures-core",
- "futures-util",
- "http",
- "http-body",
- "hyper",
- "hyper-tls",
- "ipnet",
- "js-sys",
- "lazy_static",
- "log",
- "mime",
- "mime_guess",
- "native-tls",
- "percent-encoding",
- "pin-project-lite",
- "serde",
- "serde_urlencoded",
- "tokio",
- "tokio-tls",
- "url",
- "wasm-bindgen",
- "wasm-bindgen-futures",
+ "cc",
+ "libc",
+ "once_cell",
+ "spin",
+ "untrusted",
  "web-sys",
- "winreg",
+ "winapi",
+]
+
+[[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
+dependencies = [
+ "semver",
+]
+
+[[package]]
+name = "rustls"
+version = "0.18.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d1126dcf58e93cee7d098dbda643b5f92ed724f1f6a63007c1116eed6700c81"
+dependencies = [
+ "base64 0.12.3",
+ "log",
+ "ring",
+ "sct",
+ "webpki",
+]
+
+[[package]]
+name = "rustls-native-certs"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "629d439a7672da82dd955498445e496ee2096fe2117b9f796558a43fdb9e59b8"
+dependencies = [
+ "openssl-probe",
+ "rustls",
+ "schannel",
+ "security-framework",
 ]
 
 [[package]]
@@ -1239,7 +992,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f05ba609c234e60bee0d547fe94a4c7e9da733d1c962cf6e59efa4cd9c8bc75"
 dependencies = [
  "lazy_static",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -1254,11 +1007,21 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
+[[package]]
+name = "sct"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3042af939fca8c3453b7af0f1c66e533a15a86169e39de2657310ade8f98d3c"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "security-framework"
-version = "0.4.4"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64808902d7d99f78eaddd2b4e2509713babc3dc3c85ad6f4c447680f3c01e535"
+checksum = "ad502866817f0575705bd7be36e2b2535cc33262d493aa733a2ec862baa2bc2b"
 dependencies = [
  "bitflags",
  "core-foundation",
@@ -1269,19 +1032,37 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "0.4.3"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17bf11d99252f512695eb468de5516e5cf75455521e69dfe343f3b74e4748405"
+checksum = "51ceb04988b17b6d1dcd555390fa822ca5637b4a14e1f5099f13d351bed4d6c7"
 dependencies = [
  "core-foundation-sys",
  "libc",
 ]
 
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+dependencies = [
+ "semver-parser",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+
 [[package]]
 name = "serde"
 version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b88fa983de7720629c9387e9f517353ed404164b1e482c970a90c1a4aaf7dc1a"
+dependencies = [
+ "serde_derive",
+]
 
 [[package]]
 name = "serde_derive"
@@ -1306,16 +1087,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "serde_urlencoded"
-version = "0.6.1"
+name = "sha1"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ec5d77e2d4c73717816afac02670d5c4f534ea95ed430442cad02e7a6e32c97"
-dependencies = [
- "dtoa",
- "itoa",
- "serde",
- "url",
-]
+checksum = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
 
 [[package]]
 name = "shell-words"
@@ -1324,23 +1099,69 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6fa3938c99da4914afedd13bf3d79bcb6c277d1b2c398d23257a304d9e1b074"
 
 [[package]]
-name = "slab"
-version = "0.4.2"
+name = "spin"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
-name = "socket2"
-version = "0.3.15"
+name = "standback"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1fa70dc5c8104ec096f4fe7ede7a221d35ae13dcd19ba1ad9a81d2cab9a1c44"
+checksum = "f4e0831040d2cf2bdfd51b844be71885783d489898a192f254ae25d57cce725c"
 dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "winapi 0.3.9",
+ "version_check",
+]
+
+[[package]]
+name = "stdweb"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d022496b16281348b52d0e30ae99e01a73d737b2f45d38fed4edf79f9325a1d5"
+dependencies = [
+ "discard",
+ "rustc_version",
+ "stdweb-derive",
+ "stdweb-internal-macros",
+ "stdweb-internal-runtime",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "stdweb-derive"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
+dependencies = [
+ "proc-macro2 1.0.24",
+ "quote 1.0.7",
+ "serde",
+ "serde_derive",
+ "syn 1.0.44",
 ]
 
+[[package]]
+name = "stdweb-internal-macros"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
+dependencies = [
+ "base-x",
+ "proc-macro2 1.0.24",
+ "quote 1.0.7",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "sha1",
+ "syn 1.0.44",
+]
+
+[[package]]
+name = "stdweb-internal-runtime"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
+
 [[package]]
 name = "syn"
 version = "0.15.44"
@@ -1395,7 +1216,7 @@ dependencies = [
  "rand",
  "redox_syscall",
  "remove_dir_all",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -1405,7 +1226,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e4129646ca0ed8f45d09b929036bafad5377103edd06e50bf574b353d2b08d9"
 dependencies = [
  "libc",
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -1450,85 +1271,48 @@ dependencies = [
 ]
 
 [[package]]
-name = "tinyvec"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "238ce071d267c5710f9d31451efec16c5ee22de34df17cc05e56cbc92e967117"
-
-[[package]]
-name = "tokio"
+name = "time"
 version = "0.2.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d34ca54d84bf2b5b4d7d31e901a8464f7b60ac145a284fba25ceb801f2ddccd"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "iovec",
- "lazy_static",
- "memchr",
- "mio",
- "num_cpus",
- "pin-project-lite",
- "slab",
-]
-
-[[package]]
-name = "tokio-tls"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
+checksum = "55b7151c9065e80917fbf285d9a5d1432f60db41d170ccafc749a136b41a93af"
 dependencies = [
- "native-tls",
- "tokio",
-]
-
-[[package]]
-name = "tokio-util"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be8242891f2b6cbef26a2d7e8605133c2c554cd35b3e4948ea892d6d68436499"
-dependencies = [
- "bytes",
- "futures-core",
- "futures-sink",
- "log",
- "pin-project-lite",
- "tokio",
+ "const_fn",
+ "libc",
+ "standback",
+ "stdweb",
+ "time-macros",
+ "version_check",
+ "winapi",
 ]
 
 [[package]]
-name = "tower-service"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e987b6bf443f4b5b3b6f38704195592cca41c5bb7aedd3c3693c7081f8289860"
-
-[[package]]
-name = "tracing"
-version = "0.1.21"
+name = "time-macros"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0987850db3733619253fe60e17cb59b82d37c7e6c0236bb81e4d6b87c879f27"
+checksum = "957e9c6e26f12cb6d0dd7fc776bb67a706312e7299aed74c8dd5b17ebb27e2f1"
 dependencies = [
- "cfg-if",
- "log",
- "pin-project-lite",
- "tracing-core",
+ "proc-macro-hack",
+ "time-macros-impl",
 ]
 
 [[package]]
-name = "tracing-core"
-version = "0.1.17"
+name = "time-macros-impl"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
+checksum = "e5c3be1edfad6027c69f5491cf4cb310d1a71ecd6af742788c6ff8bced86b8fa"
 dependencies = [
- "lazy_static",
+ "proc-macro-hack",
+ "proc-macro2 1.0.24",
+ "quote 1.0.7",
+ "standback",
+ "syn 1.0.44",
 ]
 
 [[package]]
-name = "try-lock"
-version = "0.2.3"
+name = "tinyvec"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
+checksum = "238ce071d267c5710f9d31451efec16c5ee22de34df17cc05e56cbc92e967117"
 
 [[package]]
 name = "unicase"
@@ -1575,6 +1359,32 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
 
+[[package]]
+name = "untrusted"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
+
+[[package]]
+name = "ureq"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed21e32e4e3ff89891022affaa7091c3a164d5049cb3872f1cf0fd6ccd9fc8f7"
+dependencies = [
+ "base64 0.13.0",
+ "chunked_transfer",
+ "cookie",
+ "cookie_store",
+ "log",
+ "once_cell",
+ "qstring",
+ "rustls",
+ "rustls-native-certs",
+ "url",
+ "webpki",
+ "webpki-roots",
+]
+
 [[package]]
 name = "url"
 version = "2.1.1"
@@ -1586,12 +1396,6 @@ dependencies = [
  "percent-encoding",
 ]
 
-[[package]]
-name = "vcpkg"
-version = "0.2.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6454029bf181f092ad1b853286f23e2c507d8e8194d01d92da4a55c274a5508c"
-
 [[package]]
 name = "version_check"
 version = "0.9.2"
@@ -1605,20 +1409,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "777182bc735b6424e1a57516d35ed72cb8019d85c8c9bf536dccb3445c1a2f7d"
 dependencies = [
  "same-file",
- "winapi 0.3.9",
+ "winapi",
  "winapi-util",
 ]
 
-[[package]]
-name = "want"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
-dependencies = [
- "log",
- "try-lock",
-]
-
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"
@@ -1632,8 +1426,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ac64ead5ea5f05873d7c12b545865ca2b8d28adfc50a49b84770a3a97265d42"
 dependencies = [
  "cfg-if",
- "serde",
- "serde_json",
  "wasm-bindgen-macro",
 ]
 
@@ -1652,18 +1444,6 @@ dependencies = [
  "wasm-bindgen-shared",
 ]
 
-[[package]]
-name = "wasm-bindgen-futures"
-version = "0.4.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7866cab0aa01de1edf8b5d7936938a7e397ee50ce24119aef3e1eaa3b6171da"
-dependencies = [
- "cfg-if",
- "js-sys",
- "wasm-bindgen",
- "web-sys",
-]
-
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.68"
@@ -1704,16 +1484,29 @@ dependencies = [
 ]
 
 [[package]]
-name = "weezl"
-version = "0.1.1"
+name = "webpki"
+version = "0.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0e26e7a4d998e3d7949c69444b8b4916bac810da0d3a82ae612c89e952782f4"
+checksum = "ab146130f5f790d45f82aeeb09e55a256573373ec64409fc19a6fb82fb1032ae"
+dependencies = [
+ "ring",
+ "untrusted",
+]
 
 [[package]]
-name = "winapi"
-version = "0.2.8"
+name = "webpki-roots"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f20dea7535251981a9670857150d571846545088359b28e4951d350bdaf179f"
+dependencies = [
+ "webpki",
+]
+
+[[package]]
+name = "weezl"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
+checksum = "e0e26e7a4d998e3d7949c69444b8b4916bac810da0d3a82ae612c89e952782f4"
 
 [[package]]
 name = "winapi"
@@ -1725,12 +1518,6 @@ dependencies = [
  "winapi-x86_64-pc-windows-gnu",
 ]
 
-[[package]]
-name = "winapi-build"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
-
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
@@ -1743,7 +1530,7 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
 dependencies = [
- "winapi 0.3.9",
+ "winapi",
 ]
 
 [[package]]
@@ -1752,25 +1539,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
-[[package]]
-name = "winreg"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
-dependencies = [
- "winapi 0.3.9",
-]
-
-[[package]]
-name = "ws2_32-sys"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
-dependencies = [
- "winapi 0.2.8",
- "winapi-build",
-]
-
 [[package]]
 name = "xml-rs"
 version = "0.8.3"
diff --git a/Cargo.toml b/Cargo.toml
index bf5d3191..1a1dd698 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,9 +12,6 @@ license = "MPL-2.0"
 authors = ["Sebastian Wiesner <sebastian@swsnr.de>"]
 edition = "2018"
 
-[features]
-default = ["reqwest"]
-
 [dependencies]
 ansi_term = "^0.12"
 base64 = "^0.12"
@@ -25,14 +22,8 @@ url = "^2.1"
 fehler = "^1"
 anyhow = "^1"
 shell-words = "^1"
-
-# Dependency for reqwest which lets Kitty, iTerm2 and perhaps others
-# fetch images from HTTP(S) URLs for display.  Without reqwest we use curl to
-# fetch resources.
-[dependencies.reqwest]
-version = "^0.10"
-optional = true
-features = ["gzip", "blocking"]
+env_proxy = "^0.4"
+ureq = { version = "^1.5", features = ["tls", "native-certs"] }
 
 [dependencies.clap]
 version = "^2.33"
diff --git a/README.md b/README.md
index 48fcfedd..b692e42d 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,6 @@ Try `mdcat --help` or read the [mdcat(1)](./mdcat.1.adoc) manpage.
 ## Installation
 
 * The [Releases] page provides pre-build binaries for Linux, macOS and Windows.
-    * **Note:** The Linux build is statically linked and requires the `curl` command to fetch images from HTTP(S).
     * **Tip:** You can copy or hard-link `mdcat` to `mdless` for a variant of `mdcat` which paginates by default (like `mdcat -p`).
 * 3rd party packages:
     * [Homebrew]: `brew install mdcat`
diff --git a/mdcat.1.adoc b/mdcat.1.adoc
index f7dec5ca..801b4f3d 100644
--- a/mdcat.1.adoc
+++ b/mdcat.1.adoc
@@ -49,9 +49,6 @@ mdcat fetches images from HTTP(S) URLs for rendering if the underlying terminal
 pass `--local` to disable this and force mdcat to only use images from the local filesystem.
 In this case remote images render as hyperlinks.
 
-Depending on the build of `mdcat` this feature requires the `curl` command in `$PATH`.
-See `mdcat --version` for details.
-
 == Options
 
 -p::
@@ -145,6 +142,24 @@ Subject to the same rules as `$MDCAT_PAGER`.
 +
 If both `$PAGER` and `$MDCAT_PAGER` are unset use `less -R` as pager.
 
+http_proxy::
+https_proxy::
+HTTPS_PROXY::
+all_proxy::
+ALL_PROXY::
+    Proxies for HTTP, HTTPS, or both protocols, to use when fetching images.
++
+Each variable provides the proxy for the corresponding protocol as URL, e.g. ``http://proxy.example.com:3128``.
++
+The lowercase name takes precedence; note that `$http_proxy` deliberately has no uppercase variant.
+
+no_proxy::
+NO_PROXY::
+    A comma-separated list of host/domain names or IP address not to use a proxy for.
++
+Matches partial hostnames (e.g. `example.org` also disables proxy for `www.example.org`), but always at name boundaries.
+
+
 == Conforming to
 
 === CommonMark support and extensions
diff --git a/src/bin/mdcat/main.rs b/src/bin/mdcat/main.rs
index ff6c58e6..d44c2b31 100644
--- a/src/bin/mdcat/main.rs
+++ b/src/bin/mdcat/main.rs
@@ -141,7 +141,6 @@ impl Arguments {
     }
 }
 
-#[cfg(feature = "reqwest")]
 fn long_version() -> &'static str {
     concat!(
         clap::crate_version!(),
@@ -155,20 +154,6 @@ You can obtain one at http://mozilla.org/MPL/2.0/."
     )
 }
 
-#[cfg(not(feature = "reqwest"))]
-fn long_version() -> &'static str {
-    concat!(
-        clap::crate_version!(),
-        "\ncurl required for HTTP/HTTPS support
-
-Copyright (C) Sebastian Wiesner and contributors
-
-This program is subject to the terms of the Mozilla Public License,
-v. 2.0. If a copy of the MPL was not distributed with this file,
-You can obtain one at http://mozilla.org/MPL/2.0/.",
-    )
-}
-
 fn main() {
     let size = TerminalSize::detect().unwrap_or_default();
     let columns = size.columns.to_string();
diff --git a/src/resources.rs b/src/resources.rs
index a30d8bf0..71f69667 100644
--- a/src/resources.rs
+++ b/src/resources.rs
@@ -40,42 +40,31 @@ fn is_local(url: &Url) -> bool {
     url.scheme() == "file" && url.to_file_path().is_ok()
 }
 
-#[cfg(feature = "reqwest")]
 #[throws]
 fn fetch_http(url: &Url) -> Vec<u8> {
-    let mut response =
-        reqwest::blocking::get(url.clone()).with_context(|| format!("Failed to GET {}", url))?;
-    if response.status().is_success() {
+    let mut request = ureq::get(url.as_str());
+    request.set("User-Agent", concat!("mdcat/", env!("CARGO_PKG_VERSION")));
+    if let Some(proxy) = env_proxy::for_url(url).to_string() {
+        request.set_proxy(
+            ureq::Proxy::new(&proxy)
+                .with_context(|| format!("Failed to set proxy for URL {} to {}", url, &proxy))?,
+        );
+    }
+
+    let response = request.call();
+    if response.ok() {
         let mut buffer = Vec::new();
         response
+            .into_reader()
             .read_to_end(&mut buffer)
             .with_context(|| format!("Failed to read from URL {}", url))?;
         buffer
     } else {
         throw!(anyhow!(
-            "HTTP error status {} by GET {}",
-            response.status(),
-            url
-        ))
-    }
-}
-
-#[cfg(not(feature = "reqwest"))]
-#[throws]
-fn fetch_http(url: &Url) -> Vec<u8> {
-    let output = std::process::Command::new("curl")
-        .arg("-fsSL")
-        .arg(url.to_string())
-        .output()
-        .with_context(|| format!("curl -fsSL {} failed to spawn", url))?;
-
-    if output.status.success() {
-        output.stdout
-    } else {
-        throw!(anyhow!(
-            "curl -fsSL {} failed: {}",
+            "GET {} failed with HTTP error status {} (synthetic error: {:?})",
             url,
-            String::from_utf8_lossy(&output.stderr)
+            response.status_line(),
+            response.synthetic_error()
         ))
     }
 }
@@ -163,23 +152,7 @@ mod tests {
         let result = read_url(&url, ResourceAccess::RemoteAllowed);
         assert!(result.is_err(), "Unexpected success: {:?}", result);
         let error = result.unwrap_err().to_string();
-        if cfg!(feature = "reqwest") {
-            assert_eq!(
-                error,
-                "HTTP error status 404 Not Found by GET https://eu.httpbin.org/status/404"
-            )
-        } else {
-            assert!(
-                error.contains("curl -fsSL https://eu.httpbin.org/status/404 failed:"),
-                "Error did not contain expected string: {}",
-                error
-            );
-            assert!(
-                error.contains("URL returned error: 404"),
-                "Error did not contain expected string: {}",
-                error
-            );
-        }
+        assert_eq!(error, "GET https://eu.httpbin.org/status/404 failed with HTTP error status HTTP/1.1 404 NOT FOUND (synthetic error: None)")
     }
 
     #[test]