Image to Data URI

Convert an image to a data:image string for inline HTML, CSS, JSON, and email.

For this tool, processing runs locally in your browser and data is not sent to the server.

Image to Data URI encodes an image into a data:image/...;base64,... string directly in your browser. Data URI is convenient for small icons, prototypes, email templates, test JSON payloads, inline CSS/HTML, and documentation. The file is read locally and not sent to the UtiLab server.

What it does

Output

Processing

Continue working

Choose a related tool for the next step.

IImage Compressor

Open

IImage Format Converter

Open

IImage Cropper

Open

Data passed between tools is kept only in the current browser session.

How to use

Upload a PNG, JPG, WebP, GIF, or SVG image.
After upload check preview and file information.
Choose output format: Data URI, Base64, HTML img, CSS background-image, JSON, or Markdown.
Click Create Data URI.
Copy the result or download it as .txt.

More about this tool

Image to Data URI encodes an image into a data:image/...;base64,... string directly in your browser. Data URI is convenient for small icons, prototypes, email templates, test JSON payloads, inline CSS/HTML, and documentation. You can get full Data URI, Base64 only, HTML img, CSS background-image, JSON field, or Markdown image. The file is read locally in your browser and not sent to the UtiLab server.

Runs in the browser
File is not sent to the server
Creates data:image Data URI
Base64-only output available
Formats for HTML, CSS, JSON, and Markdown
Copy result with one button
Result can be downloaded as .txt
No registration required

Frequently Asked Questions

What is an image Data URI?

A Data URI is a string that contains MIME type and image data inside the URL, for example data:image/png;base64,...

How is Data URI different from Base64?

Base64 is encoded data only. Data URI also includes a MIME type prefix such as data:image/png;base64, so it can be pasted into HTML or CSS.

Is the file uploaded to the server?

No. The image is read and encoded locally in your browser and not sent to the UtiLab server.

When is Data URI convenient?

Data URI is convenient for small icons, prototypes, inline examples, email templates, test payloads, and documentation.

Why is Data URI bad for large images?

Base64 usually increases data size by about one third. Large Data URIs inflate HTML/CSS and may slow page load.

Can I insert Data URI in HTML?

Yes. Use it in an img src attribute: <img src="data:image/png;base64,...">.

Can I use Data URI in CSS?

Yes. For example: background-image: url("data:image/png;base64,...").

Can I use Data URI in JSON?

Yes. Data URI can be stored as a JSON string field if your API or app expects that format.

Can I upload several images?

This tool works with one image at a time so the result is easy to review and copy. For batch encoding, use a separate batch tool.

Do I need to register?

No. The tool works immediately and does not require registration.

More about this tool

Image to Data URI encodes an image into a data:image/...;base64,... string directly in your browser. Data URI is convenient for small icons, prototypes, email templates, test JSON payloads, inline CSS/HTML, and documentation. You can get full Data URI, Base64 only, HTML img, CSS background-image, JSON field, or Markdown image. The file is read locally in your browser and not sent to the UtiLab server.

Runs in the browser
File is not sent to the server
Creates data:image Data URI
Base64-only output available
Formats for HTML, CSS, JSON, and Markdown
Copy result with one button
Result can be downloaded as .txt
No registration required

Frequently Asked Questions

What is an image Data URI?

A Data URI is a string that contains MIME type and image data inside the URL, for example data:image/png;base64,...

How is Data URI different from Base64?

Base64 is encoded data only. Data URI also includes a MIME type prefix such as data:image/png;base64, so it can be pasted into HTML or CSS.

Is the file uploaded to the server?

No. The image is read and encoded locally in your browser and not sent to the UtiLab server.

When is Data URI convenient?

Data URI is convenient for small icons, prototypes, inline examples, email templates, test payloads, and documentation.

Why is Data URI bad for large images?

Base64 usually increases data size by about one third. Large Data URIs inflate HTML/CSS and may slow page load.

Can I insert Data URI in HTML?

Yes. Use it in an img src attribute: <img src="data:image/png;base64,...">.

Can I use Data URI in CSS?

Yes. For example: background-image: url("data:image/png;base64,...").

Can I use Data URI in JSON?

Yes. Data URI can be stored as a JSON string field if your API or app expects that format.

Can I upload several images?

This tool works with one image at a time so the result is easy to review and copy. For batch encoding, use a separate batch tool.

Do I need to register?

No. The tool works immediately and does not require registration.