A collection of handy utilities, all in one place.
Remove duplicate lines from a list. First occurrence wins, order preserved.
See what's in both lists, only in A, or only in B.
Extract text from an image using OCR. Runs locally in your browser.
Convert text to camelCase, snake_case, kebab-case, UPPER, Title Case, and more.
Encode plain text to Base64 or decode Base64 back to text.
Encode or decode URL components and query strings.
Pretty-print and validate JSON with syntax highlighting. Also minifies.
Decode a JWT token and inspect the header and payload. Signature not verified.
Convert CSV data to JSON and back. Handles quoted fields and nested values.
Convert Unix timestamps to dates and back. Auto-detects seconds vs milliseconds.
Convert between decimal, binary, octal, and hexadecimal.
Paste a cron expression and get a plain English explanation of when it fires.
Generate v4 UUIDs one at a time or in bulk.
Test regular expressions against a string with live match highlighting.