Quick-access dev utilities: format JSON, test a regex, decode a JWT, generate UUIDs, build a cron expression, reformat SQL, preview Markdown, generate a color palette, convert an image, get lorem ipsum. Everything runs in your browser; nothing is uploaded.
Format, indent, and validate JSON.
Test JavaScript regex with capture groups.
Decode JWT header, payload, and signature.
Generate UUID v4 or sortable ULIDs.
Build, edit, and explain cron expressions.
Quick SQL reformat with uppercased keywords.
Live Markdown preview with GitHub extensions.
Shade ramps and color harmonies from a hex.
PNG / JPEG / WebP, all in the browser.
Filler text by paragraph, sentence, or word.