Base64 / Data URL Image Encoder

How it works

Convert a small image into a Base64-encoded data URL that can be embedded directly inline in HTML or CSS, with ready-to-copy snippets for both.

1. Drop an image file onto the upload area, or click to select one.
2. Review the size comparison — Base64 encoding typically adds ~33% overhead versus the binary file.
3. Copy the raw data URL, or use the pre-built HTML <img> or CSS background-image snippet.
4. Paste the snippet directly into your markup or stylesheet.

Common use cases

• Embedding a small icon or logo directly in HTML/CSS to avoid an extra HTTP request.
• Inlining an image into an email template, where external image loading is often blocked or unreliable.
• Embedding a placeholder or favicon image directly into a single-file HTML prototype.
• Quickly generating a data URL for a CSS background-image without hosting the file anywhere.

FAQ

When should I NOT use Base64 encoding for images?

For large images — the ~33% size increase and inability to cache the image separately from the page usually outweigh the benefit of avoiding one extra request. Best suited for small icons, logos, or single-use assets.

Does encoding lose image quality?

No — Base64 encoding is a lossless representation of the exact same file bytes; only the text encoding changes, not the pixel data.