What is Base64 image encoding?

Base64 encoding converts binary image data into a text string. The result can be embedded directly in HTML, CSS, JSON, or APIs without hosting the image as a separate file.

What is the difference between Data URI and Raw Base64?

A Data URI includes the MIME type prefix (e.g. data:image/png;base64,...) and can be used directly as an img src. Raw Base64 is just the encoded string without the prefix.

Is my image uploaded?

No. The image is read and encoded entirely in your browser using the FileReader API. Nothing is sent to any server.

What image formats are supported?

Any format your browser can read — JPG, PNG, WebP, GIF, BMP, and more.

Is there a file size limit?

There is no server limit. Very large images produce very long Base64 strings which may be slow to copy. For images over 5MB, consider compressing first.

A Data URI is a Base64 string with a MIME prefix like data:image/png;base64,... It can be used directly as an image source in HTML or CSS.

Is there a size limit?

No server limit. Very large images produce very long strings. For files over 5MB, consider compressing first.

Image to Base64 — Convert Images to Base64 Free Online

Convert JPG, PNG, and WebP images to Base64 or Data URI strings. Copy instantly. Free image to Base64 converter — no upload required.

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What is Image to Base64 — Convert Images to Base64 Free Online?

Image to Base64 encoding converts a binary image file into a text string that can be embedded in HTML, CSS, JSON, or API payloads without hosting the image separately. A Data URI includes the MIME type prefix so it can be used directly as an img src attribute. Our tool reads your image in the browser and outputs either format for instant copying.

How to Use Image to Base64 — Convert Images to Base64 Free Online

1Upload your image by clicking or dragging onto the tool.
2Choose Data URI or Raw Base64 output format.
3Copy the encoded string with one click.

Key Features

Data URI and Raw Base64 output modes
One-click copy to clipboard
Shows image dimensions and file size
All image formats supported
No upload required

Benefits

Embed images in HTML emails without attachments
Include images in JSON API payloads
Use in CSS background-image data URIs
Debug and inspect encoded image data

Why Use Irreva for Image to Base64 — Convert Images to Base64 Free Online?

Embed images in HTML emails without attachments

Include images in JSON API payloads

Use in CSS background-image data URIs

Runs 100% in your browser — files never leave your device.

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Works on any device: desktop, tablet, or mobile.

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