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Encoders and decoders
Base64 Decoder / Encoder
Decode Base64 to readable text or a downloadable file, or encode text to Base64.
- Runs in your browser
- Instant results
- Free, no sign-up
Loading the tool…
How to use the Base64 Decoder
- Paste the Base64 string (data URLs work too).
- Read the decoded text, or download it if it is a file such as an image.
- Switch to Encode to turn text into Base64.
Frequently asked questions
What is Base64URL?
A variant that uses - and _ instead of + and / and drops padding, so it is safe in URLs and JWTs. Both variants are decoded automatically.
Why does the decoded text look broken?
The data is probably binary, such as an image or compressed file. Use the download button instead.
Is Base64 encryption?
No. It is only an encoding; anyone can decode it, so never use it to protect secrets.
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