Convert
Image to Base64 Converter Online
Encode any image as a Base64 string or a ready-made data URI for HTML, CSS and JSON - entirely in your browser.
- Free
- No sign-up
- No watermark
- Private by design
Image to Base64
How to use it
- 1
Pick an image
- 2
We encode it in your browser
- 3
Copy the Base64 string or data URI
Image to Base64
When to use Base64 images
To convert an image to Base64, pick the file and copy the Base64 string or the ready-made data URI - encoding happens in your browser.
Embed in HTML and CSS
Small icons inline as data URIs save an extra request.
JSON and APIs
Send images inside JSON payloads.
Emails
Some email templates embed small images this way.
Tips for the best result
Only for small images
Base64 is about 33% larger than the file; keep big images as files.
When to use it
- Embed an icon in CSS
- Put an image in JSON
- Create a data URI for HTML
Image to Base64
Image to Base64 FAQ
No. Encoding happens entirely in your browser.