Image to Base64

Encode PNG, JPG, WebP, and SVG to Base64 or data URI directly in your browser.

Обработка выполняется локально в браузере. Данные не отправляются на сервер.

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

Image to Base64 is a free online tool that converts PNG, JPG, WebP, GIF, and SVG to Base64 or data URI in your browser. Use it for inline HTML, CSS, JSON, email templates, test payloads, and documentation. Processing runs locally and files are not sent to the server.

What it does

Output

Processing

Continue working

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

How to use

Drag one or more images into the upload area or choose files manually.
Choose the output format: Data URI, Base64 only, HTML img, CSS background-image, or JSON field.
Click To Base64 and check result size, MIME type, and image preview.
Copy a single result, all results at once, or download a .txt file.

More about this tool

Image to Base64 converts PNG, JPG, WebP, GIF, and SVG to Base64 or data URI directly in your browser. The result can be used for embedding small images in HTML, CSS, JSON, email templates, test payloads, documentation, and inline examples. You can choose output format: data:image/...;base64, Base64 only, HTML img, CSS background-image, or JSON field. The service shows MIME type, original file size, Base64 size, image width and height, and warns if the file is too large for inline embedding.

Runs in the browser
Files are not sent to the server
Supports PNG, JPG, WebP, GIF, and SVG
Multiple files can be selected
Generates Data URI and plain Base64
Output formats for HTML, CSS, and JSON
Shows size and image preview
Results can be downloaded as .txt
No registration required

Frequently Asked Questions

What is an image in Base64?

It is a text representation of a binary image file. You can embed it in HTML, CSS, or JSON, for example as data:image/png;base64,...

What is a data URI?

A data URI is a string that contains the MIME type and Base64 data inside the URL, for example data:image/png;base64,...

When should I use Base64 for images?

Base64 is convenient for small icons, inline examples, tests, email templates, and documentation. For large images, a separate file or CDN is usually better.

Why does Base64 increase file size?

Base64 encodes binary data as text, so the resulting string is usually about one third larger than the original file.

Can I embed Base64 in HTML?

Yes. You can use a data URI in the src attribute of an img tag: <img src="data:image/png;base64,...">.

Can I use Base64 in CSS?

Yes. A data URI can be used in CSS, for example background-image: url("data:image/png;base64,...").

Can I use Base64 in JSON?

Yes. Base64 or data URI can be stored as a JSON string value if your API or app expects that format.

Are multiple images supported?

Yes. You can select several files, and a separate result is created for each image.

Are images uploaded to the server?

No. Images are read and encoded locally in your browser.

Do I need to register?

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

How to use

Drag one or more images into the upload area or choose files manually.

Choose the output format: Data URI, Base64 only, HTML img, CSS background-image, or JSON field.

Click To Base64 and check result size, MIME type, and image preview.

Copy a single result, all results at once, or download a .txt file.

More about this tool

Runs in the browser
Files are not sent to the server
Supports PNG, JPG, WebP, GIF, and SVG
Multiple files can be selected
Generates Data URI and plain Base64
Output formats for HTML, CSS, and JSON
Shows size and image preview
Results can be downloaded as .txt
No registration required

Frequently Asked Questions

What is an image in Base64?

It is a text representation of a binary image file. You can embed it in HTML, CSS, or JSON, for example as data:image/png;base64,...

What is a data URI?

A data URI is a string that contains the MIME type and Base64 data inside the URL, for example data:image/png;base64,...

When should I use Base64 for images?

Base64 is convenient for small icons, inline examples, tests, email templates, and documentation. For large images, a separate file or CDN is usually better.

Why does Base64 increase file size?

Base64 encodes binary data as text, so the resulting string is usually about one third larger than the original file.

Can I embed Base64 in HTML?

Yes. You can use a data URI in the src attribute of an img tag: <img src="data:image/png;base64,...">.

Can I use Base64 in CSS?

Yes. A data URI can be used in CSS, for example background-image: url("data:image/png;base64,...").

Can I use Base64 in JSON?

Yes. Base64 or data URI can be stored as a JSON string value if your API or app expects that format.

Are multiple images supported?

Yes. You can select several files, and a separate result is created for each image.

Are images uploaded to the server?

No. Images are read and encoded locally in your browser.

Do I need to register?

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