Image to Base64 Converter
Drop an image and get its Base64 representation instantly — as a data URL, a ready-made <img> tag or a CSS background declaration. The file is read by your browser and never uploaded.
Why embed images as Base64?
A Base64 data URL lets an image live directly inside HTML or CSS with no separate HTTP request — handy for email templates (many clients block external images but allow data URIs), single-file HTML reports, tiny icons and offline demos. This tool uses the browser's FileReader to encode the file, so it works for any format your browser understands: PNG, JPEG, GIF, WebP, SVG and more.
Use it the other way too: paste Base64 into our Base64 decoder to inspect text payloads, and keep in mind that embedding inflates size by about one third — great for images under 20 KB, wasteful for photographs. For larger files keep them as normal uploads.
FAQ
- Is the image uploaded anywhere?
- No. Encoding happens in your browser via
FileReader.readAsDataURL(); there is no network request with your file. - Why is the Base64 string bigger than the file?
- Base64 packs 3 bytes into 4 ASCII characters, so the text is roughly 33% longer than the binary. That is inherent to the format, not a bug.
- What size image should I embed?
- Icons and small graphics under ~20 KB embed well. For photos, use the image compressor first or host the file normally.
Once you need cron jobs, a tiny API or image processing at scale, a $6/mo droplet runs it 24/7. New accounts get a $200, 60-day credit.