Free developer tools — JSON formatter, Base64, URL encoder, JWT decoder, regex tester, UUID generator and more.
QuickToolz Developer Tools is a curated set of fast, no-signup utilities for software engineers, web developers, DevOps engineers, and API integrators. Format JSON, decode Base64, test regular expressions, decode JWT tokens, generate UUIDs, and convert YAML to JSON — all in your browser.
JSON formatter & validator — pretty-print, minify, and catch syntax errors instantly
Base64 encoder / decoder — encode binary or text safely for transport in JSON, URLs, or email
URL encoder / decoder — handle percent-encoding for query strings and form data
JWT decoder — inspect header and payload of any JSON Web Token (without verification)
Regex tester — build and debug JavaScript-compatible regular expressions with live match highlighting
UUID generator — produce RFC 4122 UUID v4 identifiers in bulk
HTML entity encoder — escape characters safely for HTML, XML, and templating
YAML ↔ JSON converter — switch between configuration formats in one click
Every tool is instant, copy-friendly, and keyboard accessible. Nothing you paste leaves your browser — perfect for inspecting secrets, internal API responses, or production logs. Bookmark the tools you use most often to keep them one keystroke away.
Got questions? We’ve got answers. Common questions about Developer Tools.