DK
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devtools
tools
devtools
The everyday utilities, without the ads. Everything runs in your browser.
encode
Base64
Encode and decode base64. Text or file.
URL
Encode, decode, and dissect a URL.
inspect
JSON
Format, minify, validate, and inspect JSON.
JWT
Decode a JSON Web Token. Inspect header and payload.
Regex
Test patterns. See matches and capture groups live.
Diff
Compare two blocks of text. Line and word level.
generate
Hash
MD5, SHA-1, SHA-256, SHA-384, SHA-512. Text or file.
UUID
Generate v4 and v7 UUIDs. In bulk.
Cron
Explain a cron expression. See the next runs.
Color
Pick a color. Convert hex, rgb, hsl, oklch.
preview
Markdown
Render markdown. Copy as HTML.
HTML
Paste HTML. Render it in a sandboxed frame.
React
Live JSX preview. A tiny sandbox.