Developer Utilities
Free utility tools for everyday developer tasks. HTTP inspection, color palettes, QR codes, IP lookup, hashing, timestamps, and more — all client-side.
HTTP Headers Inspector
Inspect HTTP response headers for any URL. See security headers, cache directives, CORS settings with plain-English explanations.
Color Picker & Palette
Pick a color and instantly get HEX, RGB, HSL values. WCAG contrast checker and 5-shade palette generator.
Image to Base64
Convert PNG, JPG, SVG, WebP images to Base64. Get the data URL or CSS background-image value. Drag-and-drop.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Live clock, timezone support, and instant copy.
IP Geolocation Lookup
Look up the geographic location of any IP address — city, country, timezone, ISP, and coordinates. Or detect your own IP.
QR Code Generator
Generate QR codes for URLs, WiFi, email, phone, and more. Custom colors, error correction levels, PNG download.
DNS Lookup Tool
Look up A, AAAA, CNAME, MX, TXT, NS, and PTR records for any domain using Cloudflare DNS-over-HTTPS.
Cron Expression Generator
Build and validate cron expressions visually. See next 5 run times in plain English with common presets.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly. All hashing runs in your browser.
UUID Generator
Generate UUID v1, v4, and v5 in bulk. Multiple formats: standard, uppercase, no-hyphens, braces.
Password Generator
Generate cryptographically secure random passwords with custom length and character sets.
JWT Decoder
Decode JWT tokens — inspect header, payload, and claims. Check expiry and iat/sub/iss fields instantly.