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Converter Tools

JPEG to Base64

Upload a JPEG or JPG file and get a Base64 string or data URI ready to embed in HTML or CSS.

Last updated: May 29, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution
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What is JPEG to Base64?

JPEG to Base64 reads a JPEG image file in your browser and encodes it as a Base64 string. The data URI output (data:image/jpeg;base64,...) can be used directly in an HTML img src or CSS background-image without hosting the file separately, useful for prototyping and single-file HTML pages.

How to Use JPEG to Base64

1

Drop a JPEG or JPG file onto the upload area or click to browse.

2

Copy the Base64 string or data URI.

3

Paste into your HTML or CSS.

Common Use Cases

  • Embedding product photos inline in HTML email templates.
  • Prototyping a page with real images without a server.
  • Storing small profile photos as Base64 strings in a config file.

Best practice

Inline Base64 images increase HTML file size and are not cached by the browser separately. Use for small images or email templates; use a URL for large images on a website.

Frequently Asked Questions

Is my photo uploaded to your server?

No. The file is read and encoded entirely in your browser using the FileReader API. Nothing leaves your device.

What is the overhead of Base64 encoding?

Base64 adds approximately 33% to the file size. A 100 KB JPEG becomes roughly 133 KB as Base64. Use compression first (e.g. reduce quality) to keep inline images manageable.

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