Base64 to Image
Decode Base64 into a viewable image.
100% private — runs in your browser, nothing is uploaded.
Decoding happens entirely in your browser — the data never leaves your device.
How to use the Base64 to Image
- 1Paste the Base64
With or without the data URI prefix — whitespace is fine.
- 2Check the preview
The decoded image renders with its detected format and size.
- 3Download it
Save the image with the correct file extension.
Examples
| Input | Output |
|---|---|
iVBORw0KGgo… | detected image/png |
data:image/jpeg;base64,/9j/4AAQ… | detected image/jpeg |
Decode Base64 back into a real image
This Base64 to image converter takes an encoded string — from an API response, a CSS file, an email source or a database dump — and turns it back into a viewable, downloadable image. It accepts raw Base64 or a full data:image/…;base64,URI, strips stray whitespace, validates the encoding and identifies the format automatically from the file's signature bytes.
Debugging embedded images
Base64-embedded images are everywhere: inline images in HTML emails, icons embedded in stylesheets, screenshots in JSON payloads, blobs stored in databases. When something renders wrong, pasting the string here answers the first debugging question — is the data itself a valid image? — and shows exactly what the bytes contain, including the true format when a wrong MIME type is declared.
Private by design
Decoding uses the browser's built-in functions, so potentially sensitive screenshots or documents never leave your machine. Need the opposite direction? The image to Base64 tool encodes files into data URIs, and the Base64 encoder/decoder handles plain text.
Frequently Asked Questions
How do I convert Base64 to an image?
Paste the Base64 string into the box — with or without the data:image/...;base64, prefix. The tool validates it, detects the format from the file's magic bytes, previews the image and offers a download.
How does the tool know whether it's a PNG or JPG?
Every image format starts with signature bytes that survive Base64 encoding as a recognizable prefix: iVBOR means PNG, /9j/ means JPEG, R0lGO is GIF, UklGR is WebP. If a data URI prefix is present, its declared type is used instead.
Why does my Base64 string fail to decode?
Common causes: line breaks or spaces inside the string (this tool strips them automatically), missing padding (=), URL-safe Base64 (- and _ instead of + and /), or a string that was truncated when copied.
What image formats are supported?
PNG, JPEG, GIF, WebP, SVG, BMP and ICO — detected automatically and downloadable with the right file extension.
Is it safe to paste sensitive images here?
Yes. The decoding runs entirely in your browser with JavaScript's built-in atob — the Base64 data is never uploaded to any server.
How do I do the reverse — image to Base64?
Use our Image to Base64 tool, which encodes any image file into a Base64 data URI ready for CSS or HTML.