Base64 to Image
Paste a Base64 string and convert it back to a viewable image.
Base64 image decoderData URL supportLocal decodingUpdated May 2026
Base64 to image decoder
Paste a Base64 image string or full data:image/... URL. Decoding happens locally in your browser.
Image preview and export panel
Preview decoded image bytes safely with an object URL, then download the result as a file.
Decoded image preview appears here.
Detected MIME type
Not decoded
Decoded file size
Not decoded
Base64 input length
0
Cleaned Base64 length
Not available
Image dimensions
Not available
Output filename
decoded-image.png
Data URL input
Not decoded
Decoded at
Not decoded
Local decoding
Base64 input is decoded in your browser without backend upload or storage.
Data URL support
Paste raw Base64 or full data:image/... URLs with MIME type included.
Download output
Preview decoded bytes and save the result as a normal image file.
Dynamic Decoding Insights
Paste a Base64 image string or full data URL to begin.
Raw Base64 input does not include a MIME type, so choose one or use auto-detect.
No whitespace cleanup has been needed yet.
Large Base64 strings can create large image files and may slow the browser.
Download the decoded image to save it as a normal file.
How Base64 Image Decoding Works
Base64 turns binary image bytes into text.
A data URL can include both the MIME type and Base64 data.
Decoding converts the Base64 text back into image bytes.
The browser can preview the decoded bytes as an image.
The decoded Blob can be downloaded as a normal image file.
Whitespace and line breaks can be removed before decoding.
Data URLs, MIME Types, and Image Formats Explained
Raw Base64 contains only encoded bytes.
Data URLs start with data:image/...;base64,
MIME type tells the browser what image format to expect.
PNG supports transparency.
JPG is common for photos but does not support transparency.
WebP can provide smaller image files.
GIF can support animation.
SVG is text-based and should be handled carefully for security.
File Size, Validation, and Security Notes
Base64 text is larger than the original binary file.
Invalid Base64 cannot be decoded into an image.
Huge Base64 strings can slow the browser.
SVG can include scripts or external references if handled unsafely.
Decoded images from untrusted sources should be reviewed before use.
This tool does not execute decoded content as code.
Common Base64-to-Image Examples
PNG data URL to image.
JPG Base64 string to image.
WebP Base64 preview.
GIF Base64 preview.
SVG data URL with safety note.
Raw Base64 with selected MIME type.
Base64 copied from an API response.
Embedded email image Base64.
Developer, Email, API, and Debugging Use Cases
Previewing API image responses.
Debugging Base64 image uploads.
Decoding email inline images.
Checking canvas exports.
Converting data URLs back to files.
Testing image previews.
Frontend development.
CMS image debugging.
QA workflows.
Image conversion checks.
Privacy and Local Processing Notes
Base64 input is decoded locally in the browser.
No account is required.
No backend storage is added by this page.
Base64 strings are not sent to a server by this tool.
Downloaded images stay under your control.
Avoid pasting sensitive private images unless necessary.
Method Explanation
1. Paste a raw Base64 string or full image data URL.
2. Detect or choose the MIME type.
3. Remove whitespace and extract the Base64 payload.
4. Decode the Base64 text into image bytes.
5. Create a safe Blob/object URL for preview.
6. Display metadata such as file size, type, and dimensions where available.
7. Download the decoded image file when ready.
Frequently Asked Questions
A Base64 to Image converter decodes Base64 text or an image data URL back into image bytes that can be previewed and downloaded as a normal image file.
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