support for --omit-version flag

ci/release/changelogs/next.md

@@ -16,6 +16,7 @@
 - CLI:
     - Support `validate` command. [#2415](https://github.com/terrastruct/d2/pull/2415)
     - Watch mode ignores backup files (e.g. files created by certain editors like Helix). [#2131](https://github.com/terrastruct/d2/issues/2131)
+    - Support for `--omit-version` flag. [#2377](https://github.com/terrastruct/d2/issues/2377)
 - Compiler:
     - `link`s can be set to root path, e.g. `/xyz`. [#2357](https://github.com/terrastruct/d2/issues/2357)
 - Parser:

ci/release/template/man/d2.1

@@ -148,6 +148,9 @@ Set the output format when writing to stdout. Supported formats are: png, svg. O
 .It Fl -no-xml-tag Ar false
 Omit XML tag (<?xml ...?>) from output SVG files. Useful when generating SVGs for direct HTML embedding
 .Ns .
+.It Fl -omit-version Ar false
+omit D2 version from generated image
+.Ns .
 .El
 .Sh SUBCOMMANDS
 .Bl -tag -width Fl
@@ -218,6 +221,8 @@ See --browser flag.
 See --stdout-format flag.
 .It Ev Sy D2_NO_XML_TAG
 See --no-xml-tag flag.
+.It Ev Sy OMIT_VERSION
+See --omit-version
 .El
 .Sh SEE ALSO
 .Xr d2plugin-tala 1

d2cli/main.go

@@ -136,6 +136,11 @@ func Run(ctx context.Context, ms *xmain.State) (err error) {
 
 	saltFlag := ms.Opts.String("", "salt", "", "", "Add a salt value to ensure the output uses unique IDs. This is useful when generating multiple identical diagrams to be included in the same HTML doc, so that duplicate IDs do not cause invalid HTML. The salt value is a string that will be appended to IDs in the output.")
 
+	omitVersionFlag, err := ms.Opts.Bool("OMIT_VERSION", "omit-version", "", false, "omit D2 version from generated image")
+	if err != nil {
+		return err
+	}
+
 	plugins, err := d2plugin.ListPlugins(ctx)
 	if err != nil {
 		return err
@@ -331,6 +336,7 @@ func Run(ctx context.Context, ms *xmain.State) (err error) {
 		Scale:       scale,
 		NoXMLTag:    noXMLTagFlag,
 		Salt:        saltFlag,
+		OmitVersion: omitVersionFlag,
 	}
 
 	if *watchFlag {
@@ -884,6 +890,7 @@ func _render(ctx context.Context, ms *xmain.State, plugin d2plugin.Plugin, opts
 		NoXMLTag:           opts.NoXMLTag,
 		Salt:               opts.Salt,
 		Scale:              scale,
+		OmitVersion:        opts.OmitVersion,
 	}
 	svg, err := d2svg.Render(diagram, renderOpts)
 	if err != nil {
@@ -978,6 +985,7 @@ func renderPDF(ctx context.Context, ms *xmain.State, plugin d2plugin.Plugin, opt
 			DarkThemeID:        opts.DarkThemeID,
 			ThemeOverrides:     opts.ThemeOverrides,
 			DarkThemeOverrides: opts.DarkThemeOverrides,
+			OmitVersion:        opts.OmitVersion,
 		}
 		svg, err = d2svg.Render(diagram, renderOpts)
 		if err != nil {
@@ -1085,6 +1093,7 @@ func renderPPTX(ctx context.Context, ms *xmain.State, presentation *pptx.Present
 			DarkThemeID:        opts.DarkThemeID,
 			ThemeOverrides:     opts.ThemeOverrides,
 			DarkThemeOverrides: opts.DarkThemeOverrides,
+			OmitVersion:        opts.OmitVersion,
 		}
 		svg, err = d2svg.Render(diagram, renderOpts)
 		if err != nil {
@@ -1332,6 +1341,7 @@ func renderPNGsForGIF(ctx context.Context, ms *xmain.State, plugin d2plugin.Plug
 			DarkThemeID:        opts.DarkThemeID,
 			ThemeOverrides:     opts.ThemeOverrides,
 			DarkThemeOverrides: opts.DarkThemeOverrides,
+			OmitVersion:        opts.OmitVersion,
 		}
 		svg, err = d2svg.Render(diagram, renderOpts)
 		if err != nil {

d2renderers/d2svg/d2svg.go

@@ -96,6 +96,7 @@ type RenderOpts struct {
 	MasterID    string
 	NoXMLTag    *bool
 	Salt        *string
+	OmitVersion *bool
 }
 
 func dimensions(diagram *d2target.Diagram, pad int) (left, top, width, height int) {
@@ -2629,8 +2630,12 @@ func Render(diagram *d2target.Diagram, opts *RenderOpts) ([]byte, error) {
 	tag := "g"
 	// Many things change when this is rendering for animation
 	if opts.MasterID == "" {
-		fitToScreenWrapperOpening = fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" data-d2-version="%s" preserveAspectRatio="%s meet" viewBox="0 0 %d %d"%s>`,
-			version.Version,
+		dataD2Version := ""
+		if opts.OmitVersion == nil || !*opts.OmitVersion {
+			dataD2Version = fmt.Sprintf(`data-d2-version="%s"`, version.Version)
+		}
+		fitToScreenWrapperOpening = fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" %s preserveAspectRatio="%s meet" viewBox="0 0 %d %d"%s>`,
+			dataD2Version,
 			alignment,
 			w, h,
 			dimensions,