Image to Base64
Convert an image to a Base64 string or data URI — right in your browser.
Upload OR Drag Files
Support for Images
or click here and press Ctrl+V / ⌘+V to paste a file
Your images are encoded entirely in your browser — nothing is uploaded.
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Convert an image to Base64 ready to paste anywhere
Get a Base64 string or a full data URI for embedding directly in HTML, CSS, or JSON.
Upload Your Images
Upload one or more images. They stay in your browser — nothing is sent to a server.
We Encode Them Instantly
Each image is converted to a Base64 string as soon as it is added.
Copy the Result
Copy the raw Base64 string, or the full data URI ready to paste into an image tag, CSS, or JSON.
Built for Developers
Everything you need to embed an image without a separate file.
Never Uploaded
Encoding happens entirely in your browser using the File API. Your image is never sent anywhere.
Raw String or Data URI
Copy just the encoded bytes, or the full data URI with the correct MIME prefix included.
Six Formats Supported
JPG, PNG, WebP, GIF, BMP, and SVG images can all be encoded.
Multiple Images at Once
Upload several images and each is encoded immediately, with its own copy button.
Unlimited Usage
No file limits and no subscriptions. Encode as many images as you need at no cost.
Cross-Platform
Works in any modern browser on Windows, Mac, Linux, and mobile devices, with no software to install.
Who Uses Image to Base64
Common reasons to encode an image as text.
Frontend Developers
David embeds a small icon directly into his CSS as a data URI to avoid an extra network request.
API Integrators
Priya needs to send an image inside a JSON payload, so she encodes it as a Base64 string first.
Email Developers
Sam inlines a logo as a data URI so it displays reliably in email clients that block external images.
Frequently Asked Questions
What is the difference between Base64 and a data URI?
The Base64 string is just the encoded bytes. A data URI wraps it with a data:image/png;base64, prefix (or the matching MIME type) so it can be used directly as an image source.
Which image formats are supported?
JPG, PNG, WebP, GIF, BMP, and SVG.
Is my image uploaded to your servers?
No. The conversion happens entirely in your browser using the File API — your image is never sent anywhere.
Can I convert multiple images at once?
Yes. Upload several images and each one is encoded immediately, with its own copy buttons.
Does encoding increase the file size?
Yes, Base64 encoding increases size by roughly a third compared to the original binary file. This is a normal tradeoff for embedding as text.
Is there a file size limit?
There is no fixed limit, though very large images produce very long strings that may be impractical to paste.
Is Image to Base64 free to use?
Yes. There is no cost, no subscription, and no account required.
Can I use this on my phone?
Yes, the tool is fully responsive and works in any modern mobile browser on iOS and Android.