Tool Category: Developer

Encode and decode URLs and query parameters instantly. Parse URLs into their components, encode special characters for safe transmission, and decode URL-encoded strings back to readable text.

Compare two texts and see exactly what changed. Side-by-side and unified diff views with line and character-level highlighting. Options to ignore whitespace and case differences.

Convert between Unix timestamps and human-readable dates instantly. Supports seconds and milliseconds, multiple output formats including ISO 8601 and RFC 2822, and timezone selection. Shows the current timestamp updating in real-time.

Encode and decode HTML entities for safe web content. Convert special characters like <, >, &, and quotes to their HTML entity equivalents and back. Includes a reference table of common entities.

Write and preview Markdown in real-time with full GitHub Flavored Markdown support. Tables, checklists, code blocks with syntax highlighting, and a formatting toolbar. Export to HTML or download as .md.

Convert JSON arrays to CSV format instantly. Automatically handles nested objects, supports custom delimiters, and lets you preview the output before downloading. Paste JSON or upload a file.

Generate cryptographic hashes instantly. Supports MD5, SHA-1, SHA-256, and SHA-512. Hash text or files, compare hashes for verification. Uses the native Web Crypto API – no data leaves your browser.

Generate UUIDs instantly. Supports v4 (random), v1 (timestamp), and v7 (sortable). Bulk generate up to 1000, format with or without hyphens, copy or download. Uses the Web Crypto API for secure random generation.

Test and debug regular expressions with live matching and highlighting. See capture groups, match indices, and pattern flags in real-time. Includes a quick reference cheatsheet and common patterns library for email, URL, phone, and more.

Encode text or files to Base64 and decode Base64 strings instantly. Supports text, images, and file-to-Base64 conversion with drag-and-drop. Preview decoded images inline. No signup, no limits, works entirely in your browser.