Home › Image Tools › Base64 to Image Converter
Paste any Base64-encoded image string — with or without a data URI prefix — and decode it back to a viewable, downloadable image file instantly.
100% client-side · no uploads · no signup · supports PNG, JPG, WebP, GIF, SVG
Paste your Base64 string
Copy the encoded string from your code, API response, or data URI and paste it into the input field. The `data:image/...;base64,` prefix is optional — the tool handles both.
Preview the decoded image
The image renders instantly in your browser so you can confirm the output before downloading.
Download the image file
Save the decoded image as PNG, JPG, GIF, or WebP — automatically detected from the Base64 data.
Base64 is a way to encode binary data (like an image file) as a string of ASCII text characters. It’s commonly used in HTML and CSS to embed images inline (as data URIs), in JSON API payloads, and in email templates — anywhere you need to transmit image data as text without sending a separate file.
No. This tool accepts both raw Base64 strings and full data URIs (e.g., `data:image/png;base64,iVBOR…`). If you paste either format, the decoder handles it automatically — you don’t need to strip or add the prefix manually.
PNG, JPG, GIF, WebP, and SVG are all supported. The format is detected automatically from the Base64 data or the data URI MIME type. The downloaded file uses the correct extension for the detected format.
Very large Base64 strings (representing multi-megabyte images) may be slow to render on older devices since decoding runs in your browser. For typical use cases — thumbnails, icons, inline images from APIs — performance is instant.
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PNG to WebP
Convert PNG files back to WebP.
Base64-encoded images appear constantly in developer work: in JSON API responses, HTML email templates, CSS background data URIs, SVG files, and database records that store image data as text. Decoding them manually means running code or hunting for a tool that doesn’t require a server upload. This converter decodes Base64 strings entirely in your browser — paste the string, see the image, and download the file. It handles both raw Base64 and full data URI format, detects the image type automatically, and runs with no network connection required.
- Accepts raw Base64 or full data URI strings — no manual prefix stripping needed.
- Auto-detects image format (PNG, JPG, GIF, WebP, SVG) from the encoded data.
- Live image preview before downloading — confirm the decoded output is correct.
- Runs entirely in your browser — useful for decoding sensitive or internal image data safely.
Decoding happens client-side in your browser. Base64 strings are never sent to a server — especially useful when the encoded image contains confidential or internal content.