How much does Base64 increase file size?

Base64 encoding increases the raw byte size by approximately 33% compared to binary.

Can I convert large images?

Yes, but Base64 is best suited for icons, logos, and UI assets under 2MB.

Yes, standard JavaScript FileReader encodes the file entirely in your browser.

100% Free & Client-Side

Convert images to Base64 data URIs for embedding in HTML, CSS, JSON, or markdown.

100% Secure In-Browser Processing Zero Server Data Retention Unlimited Free Downloads

Supports image/* up to 15MB

Generates clean data:image/png;base64,... strings instantly

Ready-to-use output formats: Raw Base64, HTML <img>, CSS url(), and JSON

Live preview and string character count readout

One-click copy buttons for every format

Upload any image file.

The Base64 string is generated in milliseconds.

Select Raw Base64, HTML Tag, or CSS snippet.

Click copy to embed directly into your code.

Base64 data URIs eliminate HTTP requests for small icons, making web pages load faster.

Encode and decode text, strings, and binary files to and from Base64 format instantly.

Convert between PNG, JPG, WebP, SVG, BMP, and GIF formats instantly with quality control.

Resize images by exact pixels, percentage, or social media presets with aspect ratio lock.

Remove EXIF, GPS location, camera settings, and personal data from photos before sharing.