Free Apps and Tools No Catch, No Subscription

3 apps

Encode Unicode text or files to Base64, decode Base64 safely, and switch to URL-safe output when needed.

Format, minify, sort, repair, and inspect JSON with clear line-and-column errors and a searchable tree view.

Encode or decode a full URL, one query value, or form data, then inspect every query parameter in a readable table.

2 apps

Read JWT headers and claims, check expiry and issued times, and optionally verify HS256 signatures in your browser.

Create one or hundreds of secure UUID v4 or time-sortable UUID v7 values, then validate and inspect any UUID.

2 apps

Build or explain a standard five-part cron schedule, validate each field, and preview the next run times in your timezone.

Convert Unix seconds, milliseconds, microseconds, or nanoseconds to readable dates and turn any local date back into a timestamp.

2 apps

Test JavaScript regular expressions live, highlight every match, inspect capture groups, and preview replacements.

Compare text or code line by line, ignore unimportant spacing or case changes, and export a familiar unified diff.