Image to Base64
Convert any image to a Base64 string or data URI instantly in your browser. Upload a PNG, JPG, SVG, WebP, or GIF and copy the encoded result — no server, no uploads
CODE TEXT
Image→Base64 Base64→Image
File Info
- Name
- Type
- Dimensions
- File size
- Base64 size
Output format:
Runs 100% Locally in Your Browser
This tool processes your data entirely on your device. Nothing is uploaded, stored, or sent to any server.
No Uploads
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Frequently Asked Questions
What is a Base64 image?
A Base64 image is a binary image file encoded as a string of ASCII characters, allowing it to be embedded directly in HTML, CSS, or JSON without a separate file request.
What is the difference between a data URI and raw Base64?
A data URI includes the MIME type prefix (e.g. data:image/png;base64,…) making it ready to use as an src attribute directly. Raw Base64 is just the encoded string without the prefix.
How do I use the Base64 output in HTML?
Use the data URI format and paste it as the src attribute of an <img> tag: <img src="data:image/png;base64,…" />.
How do I use a Base64 image in CSS?
Paste the data URI as a background-image value: background-image: url('data:image/png;base64,…');
Why is Base64 output larger than the original file?
Base64 encoding uses 4 characters to represent every 3 bytes of binary data, resulting in approximately 33% size overhead compared to the original file.
What image formats are supported?
Any format the browser can read — PNG, JPG, WebP, GIF, SVG, AVIF, and more. The MIME type is detected automatically.
Is my image uploaded to a server?
No. The entire conversion uses the browser's FileReader API — your image never leaves your device.