Developer tools
The small utilities I reach for daily. All free, all client-side — paste a token or some JSON and nothing ever leaves your machine.
JWT Decoder
AuthPaste a token, see the header, payload, and whether the signature checks out. Nothing leaves your browser.
JSON Formatter
DataPretty-print, minify, and validate JSON. Catches the trailing comma before your API does.
UUID Generator
Datav4, v7, and bulk generation. Copy one or a thousand without leaving the page.
Regex Tester
TextLive match highlighting with a plain-English breakdown of what each group is doing.
Base64 Encoder
DataEncode and decode text, files, and data URIs both directions, instantly.
Color Picker
DesignPick a color and get HEX, RGB, HSL, and OKLCH at once, with contrast scores against any background.
CSS Shadow Generator
DesignStack multiple box-shadows with a live preview and copy production-ready CSS.
Gradient Generator
DesignBuild linear, radial, and conic gradients, then export to CSS or Tailwind in one click.
Cron Builder
DevOpsDescribe a schedule in English, get the cron expression, and see the next ten run times.
Timestamp Converter
DataUnix epoch to human time and back, across time zones, with millisecond precision.
HTTP Status Finder
ReferenceEvery status code with a plain explanation and when you'd actually return it.
README Templates
ResourceBattle-tested README and GitHub profile templates you can drop in and ship today.