Image to Base64
🔒 Local only Image & File
Convert an image to a Base64 data URI for embedding in HTML or CSS.
The image to Base64 tool gives you the matching Base64 data URI as soon as you upload an image, with one-click copy of the string or a ready-made CSS background-image snippet. Embedding small icons directly in HTML, CSS, or config files removes an extra image request. All conversion runs locally in your browser and images are never uploaded.
Tool area
How to use
- Choose the image file to convert (5MB or less recommended).
- The Base64 data URI is generated instantly.
- Click "Copy" for the string, or "Copy as CSS" for a background-image snippet.
- Paste the string into your HTML, CSS, or config file.
Use cases
- Embed a small icon in CSS to remove an extra request.
- Put an image directly in HTML when there is no image host.
- Embed an image in a config file or email template.
FAQ
- Does Base64 make the file bigger?
- Yes, the encoded string is usually about 33% larger than the original, so use it for small icons.
- Is my image uploaded?
- No, all conversion happens locally in your browser.
- Why is there a size limit?
- Large images produce very long strings and use a lot of memory, so a ~5MB limit keeps it responsive.
- Can I use it directly in an HTML image tag with alt text?
- Yes, put the data URI in the image tag src and add descriptive alt text to display the image.
- Which formats are supported?
- Common formats like JPG, PNG, WebP, GIF, and SVG are supported.
Privacy & local processing
🔒 This tool runs entirely in your browser. No data is uploaded to any server.
Image to Base64 runs entirely in your browser; no files are uploaded.
Trust & usage note
This tool runs mainly in your browser. Your input is not actively uploaded to a server. Avoid entering highly sensitive data. Results are for reference only.
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