Small utilities that run entirely in your browser. No uploads, no trackers, no servers.

• ./ base64

  Encode and decode Base64 — UTF-8 safe, URL-safe variant, file input.

• ./ json

  Pretty-print, validate, and minify JSON with precise error locations.

• ./ uuid

  Generate UUID v4 and ULID identifiers, one or in bulk.

• ./ jwt

  Decode JWT header and payload locally. Decoding is not verification.

• ./ regex

  Live match highlighting, capture groups, flags, and replace preview.

• ./ exif-stripper

  See and strip image metadata (EXIF, GPS) — download a clean copy.

• ./ cron

  Turn a cron expression into plain language and its next run times.

• ./ qr

  Create QR codes from text or URLs, download as SVG or PNG.