Decode Base64 strings back to text, including Base64URL.
Base64 hides content; decoding restores the original bytes or text.
Runs entirely in your browser. Nothing is uploaded or logged.
Developers inspecting JWTs, config files, and HTTP headers.
Format, validate, and minify JSON with helpful error messages.
Encode text to Base64, including Unicode text.
Generate random v4 UUIDs; up to 200 at a time.
URL-encode strings so they are safe as query parameters.
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