Whether you're debugging an API response, testing a regex pattern, or converting data formats, our developer tools help you work faster. Every tool runs entirely in your browser — nothing is uploaded to any server.
28 free online tools available
Format, validate, and beautify JSON data instantly in your browser.
Validate JSON data and detect syntax errors in real-time.
Minify JSON data to reduce file size for production use.
Format and beautify XML documents with proper indentation.
Validate XML documents against schema rules and detect errors.
Format and validate YAML files with syntax highlighting.
Decode and inspect JWT tokens — header, payload, and signature.
Encode text or files to Base64 format instantly.
Decode Base64 strings back to plain text or binary data.
Encode URLs and query parameters for safe transmission.
Decode URL-encoded strings back to their original form.
Generate UUID v4 and other unique identifiers instantly.
Generate cryptographic hashes using MD5, SHA-1, SHA-256, and more.
Generate MD5 hash for any text or string input.
Generate SHA-256 hash for secure data verification.
Test and debug regular expressions in real-time.
Preview HTML code rendered in real-time.
Format and beautify HTML code with proper indentation.
Format and beautify CSS stylesheets for better readability.
Format and beautify JavaScript code with proper indentation.
Minify CSS to reduce file size and improve load times.
Minify JavaScript code to reduce file size for production.
Pick colors from a visual palette and get HEX, RGB, HSL values.
Convert colors between HEX, RGB, HSL, and CMYK formats.
Generate beautiful color palettes from hex codes or images.
Generate and preview cron expressions with a visual interface.
Convert between Unix timestamps and human-readable dates.
Generate custom QR codes with colors and logo overlay.
Format JSON, XML, HTML, CSS, and JavaScript with customizable indentation. Make minified code readable in one click.
Convert between Base64, URL-encoded, and plain text formats. Decode JWT tokens to inspect headers and payloads.
Validate JSON and XML syntax, test regular expressions in real-time, and generate cryptographic hashes with multiple algorithms.
Generate UUIDs, color palettes, cron expressions, and QR codes. Convert between color formats (HEX, RGB, HSL, CMYK).
Format and validate JSON responses from REST APIs. Decode JWT tokens to verify authentication payloads during development.
Beautify minified JavaScript and CSS before reviewing. Compare formatted output against original code.
Convert between YAML and JSON for Kubernetes, Docker, and CI/CD configuration files. Validate syntax before deployment.
Generate and verify SHA-256 hashes for file integrity checks. Test password strength and analyze JWT token expiration.
