Base64 to Image
Turn Data URLs Back Into Files
Decode a Base64 data URL into a downloadable image, useful for inspecting API payloads, recovering fixtures, and testing embedded assets.
Base64 to Image at a glance
- InputBase64 data URL
- DetectsMIME type
- OutputImage file
- ProcessingBrowser-only
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How to decode Base64
- 01Paste the data URLProvide the complete Base64 string, including its MIME prefix when available.
- 02Preview the imageLet the browser decode the bytes and confirm the result is the asset you expect.
- 03Download the fileSave the decoded image with the detected format and a practical filename.
Features
MIME detection
The prefix identifies whether the payload represents PNG, JPEG, WebP, or another supported image.
Immediate preview
See whether the data decodes before saving a file.
Fixture recovery
Turn embedded test data back into an ordinary asset.
API debugging
Inspect image payloads without writing a one-off decoder script.
No external request
The pasted bytes never need to travel to a decoding service.
Format-aware download
Use the source MIME to choose a sensible file extension.
Base64 decoding jobs
Make opaque payloads inspectable
Visual verification
A preview answers whether a long string contains the image you expect.
Recover assets
Decode embedded resources when the original file is not nearby.
Simplify debugging
A browser workflow is faster than writing a temporary parser for one payload.
Keep data local
Sensitive request samples do not need a cloud decoding endpoint.
What to check before decoding a data URL
A valid Base64 image usually starts with a data URL prefix such as image/png or image/jpeg. That prefix tells the browser how to interpret the bytes and gives the decoded file its likely extension.
Strings copied from logs can contain whitespace, JSON escaping, or a truncated ending. A preview that fails is often a transport problem rather than an image-format problem.
Treat decoded output as untrusted input when it came from an external source. Previewing an image is safer than executing arbitrary text, but normal file-handling hygiene still applies.
“The preview quickly tells me whether a failed upload produced a real image payload.”
Drew Wilson - API developer
“I decode fixture strings to inspect the exact pixels a test will receive.”
Fatima Noor - QA analyst
“Embedded email images become ordinary files for documentation examples.”
Kenji Mori - Technical writer
Frequently asked questions
What can I paste?
Paste a complete Base64 data URL containing an image MIME type and encoded bytes.
Which formats are supported?
Common browser image formats such as PNG, JPEG, and WebP can be decoded.
Can I preview before downloading?
Yes. The tool previews the decoded image when the payload is valid.
Are strings uploaded?
No. Decoding occurs in your browser.
Why does decoding fail?
The string may be truncated, malformed, escaped incorrectly, or not contain an image.
Does decoding improve quality?
No. It restores the original encoded bytes; it does not enhance the image.