Free developer tools
Format, validate, compare and convert — no sign-up, nothing to install. Most tools run entirely in your browser.
Free tools
Formatters
Free
JSON formatter
Beautify, minify, validate, sort and convert JSON to XML or CSV.
Free
SQL formatter
Beautify, minify and check SQL queries.
Free
HTML formatter
Beautify, minify and validate HTML, with an element tree.
Compare
Encode & inspect
Free
Base64
Encode or decode UTF-8 text as Base64.
Free
URL encode
Percent-encode or decode URLs and query values.
Free
JWT decode
Inspect header and payload locally. Signature is not verified.
Generate
Free
UUID
Generate RFC 4122 UUIDs. Optional count in input (1–100).
Free
Hash
SHA-256 and SHA-1 of the input text (in the browser).
Free
Unix time
Convert unix timestamps and ISO dates.