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Dev & Data
Base64 Decode
Decode a Base64 (or Base64url) string back to readable text. Handy for JWTs, data-URIs and config blobs.
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Worked example
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Frequently asked
What if it's not valid Base64?
You'll see a short error instead of garbage.
Does it accept url-safe Base64?
Yes — the '-' and '_' variants are handled.