Developer
Browse our free developer tools and utilities. Format JSON and XML, generate passwords and QR codes, test regex patterns, convert colors and hashes, check your screen resolution, and much more. Built for developers, designers, and IT professionals — all tools run client-side for maximum speed and privacy with no registration needed.
29 tools
JSON Formatter
Format, validate and beautify JSON data. Minify or pretty-print JSON.
→Color Picker
Pick colors and convert between HEX, RGB, and HSL formats.
→Password Generator
Generate strong, secure passwords with custom length and character types.
→QR Code Generator
Generate QR codes from text or URLs. Download as PNG image.
→Barcode Generator
Generate Code 128 barcodes from text. Customize and download as PNG.
→Screen Resolution
Display your screen resolution, viewport size, pixel ratio, orientation and more.
→Screen Recorder
Record your screen directly in the browser. Start, stop, pause recording with video preview and WebM download.
→Regex Tester
Test regular expressions with real-time matching, highlighting and group capture.
→Hex Converter
Convert between decimal, hexadecimal, binary and octal number systems.
→Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text input.
→Binary Converter
Convert between binary, decimal, hexadecimal, and octal number systems.
→Binary Translator
Translate text to binary code and binary code to text. Also shows octal and decimal representations.
→Color Converter
Convert colors between HEX, RGB, and HSL formats with live preview.
→IP Lookup
Display your public IP address with geolocation info including city, country, and ISP.
→Cron Expression Generator
Generate and explain cron expressions visually with presets and next run preview.
→Timestamp Converter
Convert Unix/Epoch timestamps to human-readable dates and vice versa. Live current timestamp, multiple formats, relative time.
→Color Palette Generator
Generate beautiful color palettes with harmony modes, contrast checking, and CSS export.
→Internet Speed Test
Check your connection info, downlink speed, latency, IP address and network type with visual speed gauge.
→Keyboard Tester
Test every key on your keyboard. Visual keyboard layout highlights pressed keys, shows key codes, and tracks total keypresses.
→Mic Test
Test your microphone online. Check volume levels, view waveform, record a test clip, and verify your mic works before calls or recordings.
→Webcam Test
Test your webcam online. Live video preview, take snapshots, check resolution and FPS, mirror toggle. Verify camera works before video calls.
→Gradient Generator
Create beautiful CSS gradients visually. Choose linear or radial, add color stops, adjust angles, preview live, and copy CSS code.
→XML Formatter
Format, validate, beautify and minify XML data. Pretty-print with configurable indentation or compress XML.
→JS Minifier
Minify JavaScript code by removing comments, whitespace, and newlines. See size savings, copy output, and download as .min.js.
→WiFi QR Generator
Generate a QR code for your WiFi network. Guests scan to connect instantly. Supports WPA/WPA2, WEP, and open networks.
→CSS Minifier
Minify and beautify CSS code online. Remove comments, whitespace, and optimize stylesheets for production.
→Color Contrast Checker
Check WCAG 2.1 color contrast ratios. Get Pass/Fail badges for AA and AAA levels with accessible alternatives.
→Text Encryptor
Encrypt and decrypt text with AES-256-GCM. Password-based encryption using PBKDF2 key derivation, entirely in your browser.
→Subnet Calculator
Calculate network address, broadcast address, host range and more from IP and subnet mask.
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