Developer Tools

Encode and decode Base64 for text, files, and images. Convert images to data URLs and decode Base64 back to downloadable files.

Upload any CSV and instantly detect issues: duplicates, empty cells, invalid emails, bad dates, inconsistent phones, and whitespace. Clean with one click.

Format, validate, minify, and inspect JSON snippets directly in the browser.

Escape and unescape HTML entities for safe snippets and documentation.

Decode JWT header and payload locally without verifying or sending tokens.

Test regular expressions against sample text and inspect matches quickly.