Performance Observer Playground
Use the Performance Observer API to monitor paint timing, layout shifts, and long tasks in real time.
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Encode text or files to Base64 and decode Base64 strings back to their original form.
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HTML to Markdown Converter
Convert HTML markup into clean Markdown syntax with support for tables and lists.
Markdown to HTML Live Preview
Write Markdown and see the rendered HTML output in real time with live preview.
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Visualize unified diffs and patch files with color-coded additions and deletions.