diff --git a/README.md b/README.md
index 51b73df..e156bef 100644
--- a/README.md
+++ b/README.md
@@ -475,7 +475,7 @@ goldmark's Markdown processing is outlined in the diagram below.
                            V
             +------- renderer.Renderer ------------------------
             | 1. Traverse AST and apply renderer.NodeRenderer
-            |    corespond to the node type
+            |    correspond to the node type
 
                            |
                            V
diff --git a/ast/ast.go b/ast/ast.go
index 3719ebb..6ffc17a 100644
--- a/ast/ast.go
+++ b/ast/ast.go
@@ -93,7 +93,7 @@ type Node interface {
 	// RemoveChildren removes all children from this node.
 	RemoveChildren(self Node)
 
-	// SortChildren sorts childrens by comparator.
+	// SortChildren sorts children by comparator.
 	SortChildren(comparator func(n1, n2 Node) int)
 
 	// ReplaceChild replace a node v1 with a node insertee.
@@ -118,7 +118,7 @@ type Node interface {
 
 	// Dump dumps an AST tree structure to stdout.
 	// This function completely aimed for debugging.
-	// level is a indent level. Implementer should indent informations with
+	// level is a indent level. Implementer should indent information with
 	// 2 * level spaces.
 	Dump(source []byte, level int)
 
@@ -169,7 +169,7 @@ type Node interface {
 	RemoveAttributes()
 }
 
-// A BaseNode struct implements the Node interface partialliy.
+// A BaseNode struct implements the Node interface partially.
 type BaseNode struct {
 	firstChild Node
 	lastChild  Node
diff --git a/extension/_test/typographer.txt b/extension/_test/typographer.txt
index cf5fea6..899b355 100644
--- a/extension/_test/typographer.txt
+++ b/extension/_test/typographer.txt
@@ -58,7 +58,7 @@ reported "issue 1 (IE-only)", "issue 2", 'issue3 (FF-only)', 'issue4'
 <p>reported &ldquo;issue 1 (IE-only)&rdquo;, &ldquo;issue 2&rdquo;, &lsquo;issue3 (FF-only)&rsquo;, &lsquo;issue4&rsquo;</p>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
 
-8: handle inches in qoutes
+8: handle inches in quotes
 //- - - - - - - - -//
 "Monitor 21"" and "Monitor""
 //- - - - - - - - -//
diff --git a/extension/footnote.go b/extension/footnote.go
index 09b6fa8..87c017e 100644
--- a/extension/footnote.go
+++ b/extension/footnote.go
@@ -272,9 +272,9 @@ func (a *footnoteASTTransformer) Transform(node *gast.Document, reader text.Read
 // FootnoteConfig holds configuration values for the footnote extension.
 //
 // Link* and Backlink* configurations have some variables:
-// Occurrances of “^^” in the string will be replaced by the
+// Occurrences of “^^” in the string will be replaced by the
 // corresponding footnote number in the HTML output.
-// Occurrances of “%%” will be replaced by a number for the
+// Occurrences of “%%” will be replaced by a number for the
 // reference (footnotes can have multiple references).
 type FootnoteConfig struct {
 	html.Config
diff --git a/extension/linkify.go b/extension/linkify.go
index 2f046eb..c0b882e 100644
--- a/extension/linkify.go
+++ b/extension/linkify.go
@@ -113,7 +113,7 @@ func WithLinkifyWWWRegexp(value *regexp.Regexp) LinkifyOption {
 	}
 }
 
-// WithLinkifyWWWRegexp is a functional otpion that specify
+// WithLinkifyWWWRegexp is a functional option that specify
 // a pattern of the email address.
 type withLinkifyEmailRegexp struct {
 	value *regexp.Regexp
diff --git a/extension/typographer.go b/extension/typographer.go
index f56c06f..fe420a1 100644
--- a/extension/typographer.go
+++ b/extension/typographer.go
@@ -113,7 +113,7 @@ func (o *withTypographicSubstitutions) SetTypographerOption(p *TypographerConfig
 	p.Substitutions = o.value
 }
 
-// WithTypographicSubstitutions is a functional otpion that specify replacement text
+// WithTypographicSubstitutions is a functional option that specify replacement text
 // for punctuations.
 func WithTypographicSubstitutions(values map[TypographicPunctuation][]byte) TypographerOption {
 	replacements := newDefaultSubstitutions()
@@ -217,7 +217,7 @@ func (s *typographerParser) Parse(parent gast.Node, block text.Reader, pc parser
 		counter := getUnclosedCounter(pc)
 		if c == '\'' {
 			if s.Substitutions[Apostrophe] != nil {
-				// Handle decade abbrevations such as '90s
+				// Handle decade abbreviations such as '90s
 				if d.CanOpen && !d.CanClose && len(line) > 3 && util.IsNumeric(line[1]) && util.IsNumeric(line[2]) && line[3] == 's' {
 					after := rune(' ')
 					if len(line) > 4 {