Base64 Decoder
Decode Base64 strings back to plain text. Convert Base64 encoded data to readable text.
About Base64 Decoder
The Base64 decoder converts Base64 strings back into their original text, supporting UTF-8 data and flagging invalid input with a clear error.
Decoding is the reverse of encoding: when an API returns a Base64 payload, an email carries a base64 body, or a data URI holds an image, this tool restores the original content so you can actually read it.
When to Use Base64 Decoder
Use it to read Base64 API payloads during debugging, to un-embed images from data URIs, or to inspect the real content of encoded configuration strings.
Pro Tip
If decoded text appears garbled, the original data was probably binary (an image or file), not plain text — and it says so in the error.
Key Features
Processes Base64 String directly in your browser
Produces decoded text instantly
Completely free with no usage limits
No registration or account required
How to Use
Provide the required input (Base64 String).
The tool processes everything locally in your browser and instantly produces decoded text.
Review the result, then copy it to your clipboard or download the output file directly from this page.
Privacy note: Base64 Decoder runs 100% in your browser. Your data is never uploaded to any server, so nothing is stored or shared.
Benefits
Your data never leaves your device when using Base64 Decoder - everything runs locally
Get accurate results in seconds
Works on desktop, tablet, and mobile
No software download or installation needed
Frequently Asked Questions
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