Converters

Encode text to Base64 or decode Base64 to text.

Convert any image or file to a Base64 data URL with preview and CSS/HTML usage snippets.

Encode text for URLs or decode encoded URL values.

Convert CSV to JSON (array of objects) or JSON to CSV — quoted-field aware, runs in your browser.

Generate TypeScript interfaces from a JSON sample — nested types, arrays, optional keys inferred.

Escape HTML entities for safe rendering or decode entities back to text. XSS-aware with attribute-safe mode.

Escape a string for safe embedding in a JSON value, or unescape a JSON-encoded string back to plain text.

Convert text to Unicode escapes and back.