Image to Base64 Encoder
Turn an image into a Base64 data URI you can drop straight into HTML or CSS, complete with ready-made snippets and a raw-Base64 view. The encoding happens in your browser, so the image is never uploaded — just remember that embedding this way adds roughly a third to the size.
- 100% free
- Private & safe
- Runs in your browser
Your files are processed securely in your browser and are not uploaded to our servers.
Why use Convert Image to Base64?
Convert Image to Base64 lets you edit and optimise images in seconds, right in your browser — no bulky software to install and nothing uploaded to a server.
- 100% private: files are processed in your browser and never uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- Handles Input: JPEG, PNG, WebP, GIF, SVG; Output: data URI + raw Base64.
- Add an image (up to 10 MB).
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use Convert Image to Base64
- Add an image (up to 10 MB).
- Copy the full data URI, the raw Base64, or a ready CSS/HTML snippet.
- Paste it into your stylesheet or markup to embed the image inline.
- Reset to encode a different image.
Examples
- Embedding a small icon as a CSS background without a separate file.
- Inlining a logo into an HTML email template.
Supported formats & limits
- Input: JPEG, PNG, WebP, GIF, SVG
- Output: data URI + raw Base64
Limitations
- Base64 embedding increases size by roughly 33% versus the binary file.
- Large inline images can bloat HTML/CSS and hurt caching — best for small assets.
- Base64 is encoding, not compression or encryption.
Frequently asked questions
When should I inline an image as Base64?
For very small, rarely-changing assets like icons, to save an HTTP request. Larger images are usually better as separate cached files.
Why is the Base64 bigger than my file?
Base64 represents binary data as text, which adds about a third to the size.
Is my image uploaded?
No. Encoding runs entirely in your browser.