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35+ free online developer tools — format JSON, encode Base64, generate UUIDs, test regex, minify CSS/JS, and more. No signup, instant results.
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Encode text or files to Base64 format
Decode Base64 strings back to original text
Encode special characters in URLs (percent-encoding)
Decode percent-encoded URLs to readable text
Generate MD5 hash from any text string
Generate SHA-256 cryptographic hash
Decode and inspect JWT tokens without a secret
Format and beautify CSS code for readability
Minify CSS to reduce file size for production
Generate beautiful CSS gradients visually
Generate CSS box-shadow with live preview
Generate CSS border-radius values visually
Generate CSS flexbox layouts with visual editor
Generate random UUID v4 identifiers
Test and debug regular expressions with live matching
Convert Unix timestamps to human-readable dates
Generate cron expressions with visual editor
Convert between binary, octal, decimal, hex
Check if ports are open on any host
Check your screen resolution and device info
Check WCAG color contrast ratios for accessibility
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Open any tool and start working immediately. No IDE plugins, no npm install, no configuration.
All processing happens in your browser. Your code and data never leave your machine.
No freemium limits, no API keys, no credit card. All 36+ tools are completely free forever.
Use on any device — laptop, tablet, phone. Perfect for quick tasks on the go.
Clean, focused interfaces. No ads cluttering the tool area, no popups interrupting your work.
Share tool links directly with teammates. No account needed on either end.
Yes. All 36+ developer tools on Quicktoolify are 100% free with no registration, no API keys, and no usage limits.
Yes. All tools process data locally in your browser. Nothing is sent to our servers — your code stays on your machine.
Most tools work offline once the page is loaded since processing happens in the browser. Some tools requiring external APIs need internet.
Yes. All developer tools are responsive and work on mobile browsers, though a larger screen is recommended for code editing.
Currently these are browser-based tools only. For programmatic access, consider using the underlying libraries directly in your project.
The regex tester uses JavaScript's native RegExp engine, so it accurately reflects how regex patterns behave in JavaScript environments.
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