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Free developer tools — JSON, HTML and CSS formatters, encoders, converters, and generators built for speed and privacy.
62 free toolsParse server logs for insights.
Test REST APIs with custom requests.
Encode and decode Base64 strings.
Calculate Unix file permissions.
Minify CSS, JavaScript, and HTML.
Blend and mix colors.
Pick colors from images and get codes.
Generate tints and shades.
Check WCAG color contrast compliance.
PopularGenerate and decode cron expressions.
Convert CSS to Tailwind classes.
CSS Box Shadow Generator
Beautify and minify CSS code.
CSS code for triangles.
Convert cURL to Axios/Fetch.
Lookup DNS records (A, MX, NS, TXT).
Generate placeholder images.
Generate .env files safely.
Validate .env file syntax.
Generate organic border-radius shapes.
Design favicons from text/emoji.
Generate .gitignore files.
Create CSS gradients.
Generate 301 redirects & rules.
Convert between HTML and Markdown.
Edit HTML with live preview.
Encode/Decode HTML entities.
PopularFormat and beautify HTML code.
Convert HTML code to React JSX.
Analyze security of HTTP headers.
HTTP status code reference.
Find your public IP & location.
Format and obfuscate JavaScript.
Generate Prisma schema from JSON.
Generate SQL from JSON data.
Convert between JSON and CSV formats.
PopularFormat and validate JSON data.
Visualize and format JSON data.
Decode and inspect JWT tokens.
Generate signed JSON Web Tokens.
Decode and edit JWT payloads.
Generate MD5, SHA hashes.
PopularGenerate, analyze, and encrypt passwords.
Test regular expressions in real-time.
Reconstruct and execute HTTP requests.
PopularPreview sites across device sizes.
Generate React Native shadow styles.
Create SEO robots.txt files.
Detect API keys and secrets in code.
Check HTTP status and response time.
View webpage source code.
Format and minify SQL.
Verify SSL certificates and security.
Generate secure API keys & secrets.
Create organic SVG shapes.
Generate SVG backgrounds.
Encode and decode URLs.
Identify browser/OS details.
Generate unique UUIDs.
Simulate and test webhook events.
Domain registration and ownership info.
Format and validate XML documents.