Image to Base64
Convert any image to a Base64 data URI, raw Base64 string, or ready-to-paste CSS background rule. Useful for inline HTML, email signatures, and self-contained demos. Runs in your browser.
Secure & Private Client-Side
This tool runs entirely in your browser. No data is sent to any server, ensuring your information remains private and secure.
About Image to Base64
Convert any image to a Base64 data URI, raw Base64 string, or ready-to-paste CSS background rule. Useful for inline HTML, email signatures, and self-contained demos. Runs in your browser.
Frequently Asked Questions
Which output formats are supported? expand_more
Three: full Data URI (data:image/png;base64,...), raw Base64 string only, or a ready-to-paste CSS background-image: url(...) rule.
Should I use Base64 for large images? expand_more
No. Base64 inlines the data into the HTML or CSS, which prevents caching and bloats the file. Reserve it for small icons, sprites, and one-off embeds.
Does Base64 reduce file size? expand_more
No, it increases size by about 33%. Use it for convenience, not compression. To actually shrink images use the [Image Compressor](/tools/image-compressor/).
Need the reverse conversion? expand_more
Paste a Data URI into the [Base64 Encoder](/tools/base64-encoder/) decode mode to inspect its contents.
Is my image uploaded? expand_more
No. All encoding happens locally in your browser.
Common Use Cases
- Inline HTML: Embed small images directly in HTML or CSS.
- Email: Include images without external requests in HTML emails.
- SVG & Favicons: Inline tiny icons as data URIs.
- Demos: Build self-contained HTML prototypes with no asset requests.