ToolsTool category
Formatting
Turn dense or generated source into something a reviewer can read — and back again when you need it compact.
5 toolsSorted by the GitHub stars of each tool's open-source project · snapshot Oct 23, 2026
#01
Mermaid diagram editor
Render Mermaid code — flowcharts, sequence, class, ER and Gantt diagrams — to an SVG you can preview and download.
#02Markdown to HTML converter
Convert Markdown to HTML with GitHub Flavored Markdown support.
#03SQL formatter
Re-indent generated or minified SQL into something reviewable.
#04Markdown table of contents generator
Build a README table of contents whose links land on the anchors GitHub actually generates — Chinese headings and duplicates included.
#05XML formatter
Indent XML by nesting depth, or collapse it back to one line.