Tools

Encrypt and decrypt text with AES-256-GCM. All processing happens in your browser using Web Crypto API. Your data never leaves your device.

Preview and generate CSS border-radius with live visual preview. Adjust all four corners independently or link them. Copy the CSS code.

Automatically format your code to adhere to standard style guides, improving readability and maintainability. Supports multiple programming languages and customizable style settings. Ideal for developers who want consistent, clean code quickly.

Organize and reuse frequently used code snippets to speed up development. Supports categorization, tagging, and sharing snippets across teams. Improves productivity by providing quick access to reusable code blocks.

Test CORS headers on any API endpoint. Check Access-Control-Allow-Origin, allowed methods, and headers in real-time from your browser.

Generate CSS filter effects (blur, brightness, contrast, grayscale, hue-rotate, sepia) with sliders and live preview.

Minify CSS code by removing whitespace, comments and redundant rules. Reduces file size for faster page loads.

Generate realistic fake data for testing. Choose field types, row count, and output format (JSON, CSV, SQL). Free test data generator.

Validate email addresses instantly. Checks format, domain syntax and MX record patterns. Bulk validate a list at once.

Parse .env files, catch syntax errors before deploy, and export to JSON, YAML, or shell exports. Auto-detects and masks sensitive keys (API keys, tokens, passwords).

Minify HTML by removing comments, extra whitespace and optional tags. Safe compression for production websites.

Convert HTML markup to clean Markdown — headings, links, lists, bold, italic, code blocks all converted automatically.

Complete reference of all HTTP status codes. Search and filter by category. Detailed explanations for every code from 100 to 599.

Convert any image to a Base64 data URI for embedding in HTML, CSS, or JSON. Instant conversion in your browser.

Minify JavaScript code by removing whitespace, comments, and unnecessary characters — reduce file size for faster page loads.

Escape special characters in JSON strings — handles quotes, backslashes, newlines, and Unicode characters.

Formats and beautifies JSON data for better readability. Developers and data analysts use it to quickly debug and visualize JSON structures.

Unescape JSON strings — convert escaped characters back to their readable form for debugging.

Generate JSON Web Tokens (JWT) with custom headers and payloads. Sign with HMAC-SHA256 using Web Crypto API. 100% browser-based — your secret key never leaves your device.

Decode and inspect JSON Web Tokens instantly. View the header, payload and check expiry without any backend. 100% client-side.

Write Markdown with a real-time HTML preview. Supports headings, bold, italic, lists, code blocks, and blockquotes. Copy HTML output instantly.

Convert Markdown to HTML with live preview. Supports headings, bold, italic, code blocks, links, images, lists, blockquotes, and horizontal rules. Split view shows rendered preview and raw HTML.

Generate MD5 hash for any text — commonly used for file checksums and legacy data integrity checks.

Find the right regex pattern for common use cases. 23 predefined patterns with descriptions and test functionality. Free regex reference tool.