Base64 Decoder (Text & Files)
Developer ToolsPopularDecode Base64 encoded strings and Data URIs back to clean UTF-8 text, inspect hex representation, or download decoded files.
Understanding Your Results
Reconstructs the original UTF-8 text or binary file from the 6-bit Base64 character representation. Image payloads are automatically rendered in a visual preview container.
Practical Guidance & Next Steps
If decoding a JWT token, copy the middle payload segment between the two dots (`.`) and paste here to inspect the decoded claims JSON.
What is this?
A robust Base64 decoding tool that converts encoded ASCII strings back into original UTF-8 text or binary files with live image previews.
How does it work?
Why use it?
Quickly inspect encoded JWT payloads, email attachments, authentication headers, or embedded image assets without launching a command line.
Malformed Base64 strings with invalid characters or illegal padding lengths will trigger syntax warnings.
Frequently Asked Questions
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