Format, validate, or minify JSON documents.

Format SQL queries across Postgres, MySQL, and SQLite dialects.

Convert between YAML and JSON syntax with auto-indent.

Render GitHub-flavored markdown with live preview.

Sandboxed client-side HTML and CSS execution.

Inspect claims, headers, and expiry times locally.

Encode and decode UTF-8 plaintext to Base64.

Inspect and edit URL parameters, hash, and paths.

Send Fetch requests and inspect headers and timing.

Generate cryptographically random v4 UUIDs.

CSPRNG password generation with entropy metrics.

Translate 5-part and 6-part cron expressions to English.

Color conversions, shades, and CSS gradients.

Render SVG bar and line charts from tabular data.

Line and word diff comparison between two snippets.