Upper limit on zip file size?

[gannons]

I've been asked if it's possible to generate large zips in the browser. From my research, and experiments, it's starting to look like this is not what the platform is designed for. AFAIK if we attempt to generate large files (>= ~3 Gb) in the browser we'll run into memory issues / crashes. But I'm having difficultly confirming this with specifications, documentation, wikis, etc.

I was hoping the contributors might have an opinion on what is a reasonable upper limit? i.e. For files generated by jszip?

[florianstancioiu]

I'm wondering about this limitation too.
Can we get an answer, some people over on reddit talk about a 5mb size limit, is that true?

[sregger]

on reddit talk about a 5mb size limit, is that true?

No. Perhaps it was true in the past but modern browsers can generate much larger zip files. In my tests I managed to generate a 10-20 GB zip.

However the browse does start to become unstable and will eventually crash. I was also using generated, as opposed to real, data so your mileage may vary.

In my scenario we moved away from generating the zip in a browse and settled on a dedicated desktop client which we wrote with Electron.

[fuscoem]

Using version 3.2.2 of jszip and streamsaver we managed to generate zip files in streaming in a vue app (in browser) using the generateNodeStream. Unfortunately with newer versions of jszip the generateNodeStream does not work in a browser (see #663 )