Convert an image to a Base64 data URI locally - paste it straight into HTML or CSS. No upload.
Running locally on your device ...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
A data URI encodes an image directly as text (Base64), so you can embed it inline in HTML (an img src) or CSS (a background) without a separate file or extra network request. This tool converts your image into a ready-to-paste data: URI.
The output is a plain text file containing the full data:image/...;base64,... string. It is handy for tiny icons, email templates, single-file demos, or avoiding an extra request, though the Base64 text is about a third larger than the original bytes.
Everything runs entirely locally in your browser (no upload, even offline) - your image never leaves your device. The image is encoded exactly as it is (same bytes, same format, no re-encoding); a very large image makes a very long string, so this suits small images best.
The honest trade-off of inlining: a data URI travels with every delivery of the HTML or CSS file and is not cached separately by the browser. As a rule of thumb, inlining only pays off for very small graphics - icons under a few kilobytes; large images are better left as their own file. For a quick check you can paste the string straight into the browser's address bar.
| Input formats | JPG, JPEG, PNG, WEBP |
|---|---|
| Auto-conversion | GIF, BMP, TIFF, ICO, SVG, HEIC, PDF, DOCX, DDS, HDR, PCX, WBMP |
| Output format | TXT |
| Batch processing | Yes |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Encodes the image bytes exactly as Base64 into a data:<type>;base64,... string saved as a text file. Base64 is about 33% larger than the original, so it is best for small images. The original format and bytes are kept (no re-encoding).
No. The encoding happens entirely locally in the browser - even offline. Your image never leaves your device.
Paste it as an img src or a CSS background to embed the image inline, without a separate file or request.
Yes. Base64 text is about a third larger than the original bytes, so a data URI suits small images best.
No. The exact original bytes are encoded, so the format and quality are unchanged.
Image collage · Compress images · PNG to SVG · SVG optimization