Developer Tools Online

Encode and decode Base64 with text and file support, URL-safe mode, copy, download, and instant output.

Compare text, code, and config files side by side with change summaries, whitespace and case options, file upload, and downloadable reports.

Compare two JSON files or JSON strings with structural diff, key-path changes, validation, and side-by-side output.

Decode JWT tokens with parsed header and payload, expiry checks, validation hints, copy, upload, and downloadable output.

Convert numbers between binary, octal, decimal, and hexadecimal with validation, copy, and instant synced output.

Generate strong random passwords, passphrases and PINs with a browser-based password strength checker.

Test regular expressions online with live matches, flags, replace mode, match positions, and instant debugging output.

Compare two text files or text blocks with highlighted differences, side-by-side view, and downloadable reports.

Encode and decode URL strings with text and file support, plus-sign handling, copy, download, and instant output.

Count words, characters, sentences, paragraphs, reading time, speaking time, keyword density, and text stats online.

Compare two XML files or XML strings with validation, normalized comparison, highlighted differences, and side-by-side output.

Convert YAML to JSON and JSON to YAML with validation, file upload, swap mode, copy, download, and error highlighting.