Developer tools

JSON Formatter Format, validate and minify JSON. Options for indent size, key sorting and Unicode escaping. Instant… Base64 Encoder/Decoder Encode text or binary to Base64, or decode Base64 strings. Supports URL-safe mode, line breaks and data… Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any input. Compare hashes for integrity… URL Encoder/Decoder Encode or decode URLs and query strings using percent-encoding (RFC 3986). Handles full URLs and… Regex Tester Test regular expressions against sample text with real-time highlighting. Shows matches, capture groups… UUID Generator Generate UUIDs (v4 random, v7 time-ordered) in bulk. Options for uppercase, braces, no-hyphen formats… JWT Decoder Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload claims, and expiration without… JSON ↔ CSV Converter Convert JSON arrays to CSV or CSV back to JSON. Handles nested objects with dot-notation flattening… Cron Expression Parser Parse and validate cron expressions with human-readable explanations. See the next 10 execution times… IP Subnet Calculator Calculate subnet details from an IP address and CIDR prefix. Shows network address, broadcast, host… DNS Lookup Look up DNS records for any domain. Query A, AAAA, MX, CNAME, TXT, NS and SOA records with TTL… HTTP Header Checker Fetch HTTP response headers from any public URL. Shows status code, content type, security headers and… HTML Entity Encoder/Decoder Encode special characters to HTML entities or decode entities back to characters. Choose between named… HTML/CSS/JS Minifier Minify HTML, CSS or JavaScript by removing comments, whitespace and unnecessary characters. Reduce file… .htaccess Redirect Generator Generate Apache .htaccess redirect rules, force HTTPS, set www preference and manage trailing slashes…