Developer Tool Categories
Browse our free developer tools organized by category. Each tool runs entirely in your browser — no signup, no data sent to servers.
JSON & Data Tools
Free online JSON and data tools: format JSON, convert JSON to CSV, validate syntax, and more. Browser-based, no signup required.
2 tools →Encoding & Decoding Tools
Free online encoding and decoding tools: Base64, URL encoding, HTML entities, and image-to-Base64. Fast, private, browser-based.
4 tools →Text Processing Tools
Free online text tools: word counter, text diff checker, case converter, lorem ipsum generator. Analyze and transform text in your browser.
4 tools →Security & Hashing Tools
Free online security tools: generate MD5/SHA hashes, create strong passwords, decode JWT tokens. Secure, client-side, no data sent to servers.
3 tools →Code Development Tools
Free online code tools: regex tester, CSS minifier, Markdown preview, color converter. Essential developer utilities in your browser.
4 tools →Generator Tools
Free online generators: create UUIDs, QR codes, lorem ipsum text, and strong passwords. Instant generation in your browser.
4 tools →Web Development Tools
Free online web development tools: Unix timestamp converter, color converter, CSS minifier, HTML entity encoder. Essential web dev utilities.
4 tools →