🔐 Full Data URI · Base64 Data Only · One Click Copy

Image to Base64 Encoder Free Online

Convert any image to a Base64 encoded string. Get the full data URI for HTML img tags or the raw Base64 data for JSON and CSS. Copy with one click.

100% Free No Signup Private — No Server Upload Works on Mobile

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Drop your image here

Convert any image to a Base64 encoded string for use in HTML, CSS or JSON

JPG · PNG · WebP · SVG — Max 5MB recommended

✅ Image encoded to Base64 successfully!

Preview

Full Data URI (use in HTML img src)

Base64 Data Only (without data URI prefix)

How It Works

Upload Your Image

Drop any JPG, PNG, WebP or SVG. Encoded instantly in your browser — nothing uploaded anywhere.

Copy Your Code

Copy the full data URI for HTML img src attributes, or copy the raw Base64 data for JSON and CSS use.

Use in Your Project

Paste directly into your HTML, CSS, JavaScript or JSON. The image is embedded without any external file.

Frequently Asked Questions

What is Base64 encoding?

Base64 is a way of converting binary data like images into a text string that can be included directly in code. This lets you embed images in HTML, CSS and JSON without separate image files.

When should I use Base64 for images?

Use Base64 for small icons and logos that you want to embed directly in your HTML or CSS to reduce HTTP requests. Avoid Base64 for large images as it increases file size by about 33%.

What is the difference between data URI and Base64?

A data URI includes the format prefix (data:image/jpeg;base64,) while raw Base64 is just the encoded data. HTML img src needs the full data URI. Some APIs and JSON fields only need the raw Base64.

Does Base64 increase file size?

Yes. Base64 encoding increases file size by approximately 33% compared to the original binary. Only use it for small images where reduced HTTP requests outweigh the size increase.

Is this free?

Yes, completely free. No account needed.

Image to Base64 — Embed Images in Code

Base64 encoding allows you to embed images directly into HTML, CSS, JavaScript and JSON without linking to external files. This is used by web developers to reduce HTTP requests, create self-contained HTML files, and embed images in email templates and API responses.

Base64 for Email Templates

Many email clients block externally hosted images. Embedding images as Base64 in your email HTML ensures they always display — regardless of the recipient's email client settings. This is a common technique used by email marketers across the USA and UK.