Developer Tools

JSON formatter, Base64, regex tester, hash generators and more

Format, beautify, and validate JSON data online. Paste your JSON and get perfectly indented, readable output instantly.

Encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8 characters.

Encode special characters for URLs or decode percent-encoded strings. Essential for building safe URLs.

Decode JSON Web Tokens (JWT) to inspect the header, payload, and signature. No server-side processing.

Generate cryptographic hashes from text input. Supports MD5, SHA-1, SHA-256, and SHA-512 algorithms.

Test regular expressions against sample text in real time. See matches, groups, and capture results instantly.

Generate random UUIDs (v4) or time-based UUIDs (v1). Create multiple UUIDs at once for batch operations.

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.

Encode special characters to HTML entities or decode entities back to characters. Prevent XSS and display issues.

Generate placeholder text for design mockups and layouts. Choose words, sentences, or paragraphs.

Parse cron expressions into human-readable descriptions and see the next scheduled run times.

Convert Markdown text to HTML with live preview. Supports headings, lists, links, images, code blocks, and more.

Convert any color format to HEX, RGB, and HSL. Enter a color in any supported format and get all representations.

Compare two texts and see the differences highlighted line by line. Find additions, deletions, and unchanged lines.

Convert between YAML and JSON formats. Supports nested objects, arrays, and common YAML features.