Image to Base64 Converter

The Image to Base64 Converter turns any image file into a Base64-encoded data URI, right in your browser. The image is read locally with the File API — it is never uploaded — and you get the encoded string in four ready-to-paste formats: a plain data URI, raw Base64, a CSS background-image rule, and an HTML <img> tag.

What is Base64 encoding and why embed images?

Base64 represents binary data using only text characters, which lets an image live inside a text file — an HTML page, a CSS stylesheet, a JSON payload, or an email template. Embedding a small image as a data URI removes an HTTP request entirely, which is useful for tiny icons, logos in HTML emails (where external images are often blocked), quick prototypes, and self-contained documents that must work offline.

Key Features

• Four Output Formats: Data URI, raw Base64, ready CSS background-image rule, and a complete HTML <img> tag.
• Instant Local Preview: See the image and its encoded size before copying anything.
• Size Statistics: Original size, encoded size, and the exact percentage overhead are displayed for every image.
• Any Image Type: PNG, JPEG, WebP, GIF, SVG, AVIF — whatever your browser can read.
• Copy or Download: Grab the output with one click or save it as a text file.
• 100% Client-Side Privacy: The image is read with FileReader in your browser; no upload, no server, no tracking.

How to Use the Image to Base64 Converter

1. Drag & drop an image onto the drop zone, or pick one with the file selector.
2. Choose the output format tab you need — Data URI, raw Base64, CSS, or HTML.
3. Review the size stats (Base64 is ~33% larger than the binary original).
4. Click Copy to copy the snippet, or Download to save it as a .txt file.

Why Choose This Tool?

Converters that upload your image to a server are slower and expose your file to a third party for no reason — Base64 encoding is a pure text transformation that any browser can do locally. This tool also goes beyond a bare string: it hands you the exact CSS or HTML snippet you were about to write by hand.

Frequently Asked Questions (FAQ)

Is my image uploaded anywhere?

No. The file is read locally with the browser's FileReader API and encoded in memory. No network request carries your image.

Why is the Base64 output larger than my file?

Base64 uses 4 text characters to represent every 3 bytes of binary data, adding roughly 33% overhead. That's the price of being able to embed binary data inside text.

When should I embed an image instead of linking it?

Embed small images (a few KB) that appear on every page — icons, tiny logos, decorative patterns — and images in HTML emails. For anything large or reused across pages, a normal linked file is better because it can be cached separately.

Does it work with SVG and animated GIFs?

Yes. The encoding preserves the file byte-for-byte, so SVGs stay sharp and GIF animations keep playing when embedded.