diff --git a/modules/markup/markdown/markdown_test.go b/modules/markup/markdown/markdown_test.go
index e229ee4c65..f7955115e0 100644
--- a/modules/markup/markdown/markdown_test.go
+++ b/modules/markup/markdown/markdown_test.go
@@ -104,7 +104,7 @@ func TestRender_Images(t *testing.T) {
test(
"!["+title+"]("+url+")",
- `
`)
+ `
`)
test(
"[["+title+"|"+url+"]]",
@@ -115,7 +115,7 @@ func TestRender_Images(t *testing.T) {
test(
"!["+title+"]("+url+")",
- `
`)
+ `
`)
test(
"[["+title+"|"+url+"]]",
@@ -412,8 +412,8 @@ func TestRenderSiblingImages_Issue12925(t *testing.T) {
testcase := `
`
- expected := `
-
+ expected := `
+
`
res, err := markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, testcase)
require.NoError(t, err)
@@ -845,10 +845,10 @@ mail@domain.com
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -872,10 +872,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -901,10 +901,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -930,10 +930,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -959,10 +959,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -988,10 +988,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1018,10 +1018,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1048,10 +1048,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1078,10 +1078,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1108,10 +1108,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1139,10 +1139,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
@@ -1170,10 +1170,10 @@ space
remote link
local link
remote link
-
-
-
-
+
+
+
+
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
diff --git a/modules/markup/markdown/transform_image.go b/modules/markup/markdown/transform_image.go
index 0f9c69cae6..b86c9e3d41 100644
--- a/modules/markup/markdown/transform_image.go
+++ b/modules/markup/markdown/transform_image.go
@@ -44,6 +44,7 @@ func (g *ASTTransformer) transformImage(ctx *markup.RenderContext, v *ast.Image)
for _, attr := range v.Attributes() {
image.SetAttribute(attr.Name, attr.Value)
}
+ image.SetAttributeString("loading", []byte("lazy"))
for child := v.FirstChild(); child != nil; {
next := child.NextSibling()
image.AppendChild(image, child)
diff --git a/modules/markup/sanitizer.go b/modules/markup/sanitizer.go
index 7ff11f0844..6c8b0f606a 100644
--- a/modules/markup/sanitizer.go
+++ b/modules/markup/sanitizer.go
@@ -108,6 +108,9 @@ func createDefaultPolicy() *bluemonday.Policy {
// Allow classes for emojis
policy.AllowAttrs("class").Matching(regexp.MustCompile(`^emoji$`)).OnElements("img")
+ // Allow attributes for images
+ policy.AllowAttrs("loading").Matching(regexp.MustCompile(`^lazy$`)).OnElements("img")
+
// Allow icons, emojis, chroma syntax and keyword markup on span
policy.AllowAttrs("class").Matching(regexp.MustCompile(`^((icon(\s+[\p{L}\p{N}_-]+)+)|(emoji)|(language-math display)|(language-math inline))$|^([a-z][a-z0-9]{0,2})$|^` + keywordClass + `$`)).OnElements("span")
policy.AllowAttrs("data-alias").Matching(regexp.MustCompile(`^[a-zA-Z0-9-_+]+$`)).OnElements("span")
diff --git a/modules/markup/sanitizer_test.go b/modules/markup/sanitizer_test.go
index 9805a34910..a0faff0494 100644
--- a/modules/markup/sanitizer_test.go
+++ b/modules/markup/sanitizer_test.go
@@ -75,6 +75,10 @@ func Test_Sanitizer(t *testing.T) {
// Emoji
`THUMBS UP`, `THUMBS UP`,
`THUMBS UP`, `THUMBS UP`,
+
+ // Images lazy loading
+ ``, ``,
+ ``, ``,
}
for i := 0; i < len(testCases); i += 2 {
diff --git a/modules/templates/util_render_test.go b/modules/templates/util_render_test.go
index 20c39eb417..1fc2e9ea52 100644
--- a/modules/templates/util_render_test.go
+++ b/modules/templates/util_render_test.go
@@ -192,8 +192,8 @@ func TestRenderMarkdownToHtml(t *testing.T) {
remote link
local link
remote link
-
-
+
+
88fc37a3c0...12fc37a3c0 (hash)
diff --git a/templates/repo/issue/card.tmpl b/templates/repo/issue/card.tmpl
index c29c14a54b..0953e5818b 100644
--- a/templates/repo/issue/card.tmpl
+++ b/templates/repo/issue/card.tmpl
@@ -4,7 +4,7 @@
{{if $attachments}}
{{range $attachments}}
-
+
{{end}}