diff --git a/buff.go b/buff.go
index d243c24..3544808 100644
--- a/buff.go
+++ b/buff.go
@@ -31,12 +31,12 @@ func (b *Buff) Bytes() []byte {
 	return b.datas
 }
 
-// Position : get current postion
+// Position : get current position
 func (b *Buff) Position() int {
 	return b.position
 }
 
-// SetPosition : set current postion
+// SetPosition : set current position
 func (b *Buff) SetPosition(pos int) {
 	b.position = pos
 }
diff --git a/fontmaker/core/ttfparser.go b/fontmaker/core/ttfparser.go
index 6ef5534..894059b 100644
--- a/fontmaker/core/ttfparser.go
+++ b/fontmaker/core/ttfparser.go
@@ -87,7 +87,7 @@ func (t *TTFParser) Kern() *KernTable {
 	return t.kern
 }
 
-// UnderlinePosition postion of underline
+// UnderlinePosition position of underline
 func (t *TTFParser) UnderlinePosition() int {
 	return t.underlinePosition
 }
diff --git a/gopdf.go b/gopdf.go
index 23143c5..2d3dcdc 100644
--- a/gopdf.go
+++ b/gopdf.go
@@ -931,7 +931,7 @@ func convertNumericToFloat64(size interface{}) (fontSize float64, err error) {
 }
 
 // SetFontWithStyle : set font style support Regular or Underline
-// for Bold|Italic should be loaded apropriate fonts with same styles defined
+// for Bold|Italic should be loaded appropriate fonts with same styles defined
 // size MUST be uint*, int* or float64*
 func (gp *GoPdf) SetFontWithStyle(family string, style int, size interface{}) error {
 	fontSize, err := convertNumericToFloat64(size)
@@ -967,7 +967,7 @@ func (gp *GoPdf) SetFontWithStyle(family string, style int, size interface{}) er
 }
 
 // SetFont : set font style support "" or "U"
-// for "B" and "I" should be loaded apropriate fonts with same styles defined
+// for "B" and "I" should be loaded appropriate fonts with same styles defined
 // size MUST be uint*, int* or float64*
 func (gp *GoPdf) SetFont(family string, style string, size interface{}) error {
 	return gp.SetFontWithStyle(family, getConvertedStyle(style), size)
diff --git a/pdf_dictionary_obj.go b/pdf_dictionary_obj.go
index f2d55a6..5f771e1 100644
--- a/pdf_dictionary_obj.go
+++ b/pdf_dictionary_obj.go
@@ -19,8 +19,8 @@ var EntrySelectors = []int{
 	4, 4, 4, 4, 4, 4, 4,
 }
 
-// ErrNotSupportShortIndexYet not suport none short index yet
-var ErrNotSupportShortIndexYet = errors.New("not suport none short index yet")
+// ErrNotSupportShortIndexYet not support none short index yet
+var ErrNotSupportShortIndexYet = errors.New("not support none short index yet")
 
 // PdfDictionaryObj pdf dictionary object
 type PdfDictionaryObj struct {
diff --git a/pdf_protection.go b/pdf_protection.go
index d4cfeb7..6190938 100644
--- a/pdf_protection.go
+++ b/pdf_protection.go
@@ -34,7 +34,7 @@ type PDFProtection struct {
 	encryptionKey []byte
 }
 
-// SetProtection set protection infomation
+// SetProtection set protection information
 func (p *PDFProtection) SetProtection(permissions int, userPass []byte, ownerPass []byte) error {
 	return p.setProtection(permissions, userPass, ownerPass)
 }
diff --git a/subset_font_obj.go b/subset_font_obj.go
index eabb5ff..15ed8b7 100644
--- a/subset_font_obj.go
+++ b/subset_font_obj.go
@@ -326,7 +326,7 @@ func (s *SubsetFontObj) GetUnderlineThicknessPx(fontSize float64) float64 {
 	return (float64(s.ttfp.UnderlineThickness()) / float64(s.ttfp.UnitsPerEm())) * fontSize
 }
 
-// GetUnderlinePosition underline postion.
+// GetUnderlinePosition underline position.
 func (s *SubsetFontObj) GetUnderlinePosition() int {
 	return s.ttfp.UnderlinePosition()
 }