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Image Tools

Image to Base64

Convert images to Base64 encoded string.

.jpg .jpeg .png .webp .gif .bmp Max: 5 MB

Click to upload or drag and drop

Supported: JPG, JPEG, PNG, WEBP, GIF, BMP

How to Use Image to Base64

1

Upload a jpg, jpeg, png, webp, gif or bmp file of up to 5 MB from your device or by dropping it onto the page.

2

Choose whether you want a complete data URI or just the raw Base64 payload, and copy the result.

3

Paste the string into your HTML img src attribute, CSS background-image rule, JSON body or email markup.

4

Remove the original file if it is no longer needed, since inlining every copy increases page weight.

Features

Encodes jpg, jpeg, png, webp, gif and bmp up to 5 MB
Output as a full data URI or as a bare Base64 string for JSON and API use
Correct content type included so the browser knows how to render it
One click to copy the encoded string to the clipboard
Encoding is done on the server, so it does not lock up the browser tab
Free to use with no account, no watermark and no length limits on the output

Frequently Asked Questions

It is the Base64 encoding of an image prefixed with its content type, for example a string beginning with a jpg base64 declaration. You can use that whole string in place of a file path in an img tag or CSS rule.
For a handful of tiny assets it can, because it removes extra HTTP requests. For anything large it does the opposite, since Base64 inflates the data by about a third and cannot be cached separately.
Base64 encodes every three bytes as four printable characters, which works out to roughly 33 percent more characters than the original binary size. That overhead is inherent to the format.
Many do, but some block embedded images by default because of security and tracking concerns. Test in the clients you care about, and keep an attachment or hosted link as a fallback.

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About Image to Base64

Base64 is the text encoding that lets binary data live inside text files. It takes the raw bytes of an image and rewrites them using 64 printable characters, so a photo that could never be written into HTML, JSON or a stylesheet can be pasted directly into the source code. That is what a data URI is: a Base64 string wrapped in a content type declaration and used in place of a file path.

This tool takes jpg, jpeg, png, webp, gif or bmp uploads of up to 5 MB and returns the encoded string, ready to copy. You can choose between a full data URI for HTML and CSS, or a bare Base64 payload if you are building an API request or a JSON blob where the content type is declared separately.

Inline images are genuinely useful in a handful of specific situations: a small icon or logo embedded straight into a template so there is no extra HTTP request, a placeholder avatar baked into an email that many clients block images from, a test fixture or seeded record in a database, and a single-file HTML document that must travel without a folder of assets. They are not a general replacement for real files, because Base64 adds roughly a third to the encoded length and the string is unreadable.

When to Use This Tool

  • Inlining a small logo, icon or placeholder graphic straight into an HTML or email template
  • Storing a test image inside JSON, a database seed or an API request without shipping a separate file
  • Building a single self-contained HTML file that has to work with no assets folder alongside it
  • Escaping an image for a system that rejects file uploads but accepts text fields