Base64 Decoder
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Decode Base64 strings back to original content
Processed in your browser
HTTPS encrypted transfer
No data sent to servers
What is Base64 Decoder?
Base64 Decoder converts a Base64-encoded string back to its original text or binary content.
When to use this tool
- Decoding API responses that return Base64-encoded data
- Extracting content from data URIs
- Decoding credentials from HTTP Authorization headers
- Recovering original text from Base64-encoded logs
How it works
Reverses the Base64 encoding process by mapping each group of 4 Base64 characters back to 3 bytes. Padding characters (=) are stripped, and the resulting bytes are decoded to the original format.
Examples
Encoded text
Input: SGVsbG8gV29ybGQh
Output: Hello World!
With padding
Input: RGFuZ0tpdA==
Output: DangKit
About Base64 Decoder
Decode Base64 strings back to original content It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Encode and decode Base64, URL, and HTML entities
- •Supports text and file inputs
- •Instant conversion with no server upload
- •Works offline in your browser
Last updated: 2025-01-15
FAQ
Decode Base64 strings back to original content
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.