# Convert Image to a Data URL

URL: https://www.image-color-changer.com/image-to-data-uri
Convert PNG, JPG, WebP, or SVG into a complete data: URL for CSS and HTML. Includes the MIME prefix so it works without editing. Free, private, browser-based.

### What a data URL is and what it costs
A data URL, not just the payload: This gives you the whole thing — `data:image/png;base64,` followed by the encoded bytes. That distinction matters: a bare Base64 string will not render if you drop it into a CSS `url()` or an `img src`, because the browser has no idea what it is looking at. The prefix is what makes it a usable URL.

Nothing leaves your machine: The encoding runs locally in your browser using the canvas API. Your file is never uploaded to a server just to be converted, which matters when the asset is an unreleased logo, a client mockup, or anything under NDA. Close the tab and there is nothing left behind.

One fewer network request: An inlined image is part of the stylesheet or document, so the browser never opens a second connection to fetch it. For a 1 KB icon that round trip often costs more than the bytes themselves, which is why small UI assets and email templates are the classic use case.

Where inlining stops paying off: Base64 inflates binary data by roughly a third, and an inlined image cannot be cached separately from the file that contains it. So a large hero image inlined into your CSS gets re-downloaded on every cache miss of that CSS. Inline the small and rarely-changing; host the rest.

What happens to each format: PNG, JPG, WebP, and SVG all work as input. The output is normalised to a PNG data URL, so transparency is preserved and the result is predictable across browsers. If you need the original format kept byte-for-byte, use a hosted file rather than an inline URL.

### How to convert image to a data url
1. Drop in your image — Add a PNG, JPG, WebP, or SVG. The file is read locally by your browser and never sent anywhere.
2. Read the data URL — The complete `data:` URL appears in the result panel as soon as the image loads — prefix included, ready to use.
3. Copy or save it — Copy it straight into your CSS or HTML, or download it as a plain .txt file to keep for later.

### Where data URLs make sense
- CSS backgrounds: Inline a small icon or pattern into a `background-image` with no extra file.
- HTML email: Some email builds require images inlined rather than linked from a CDN.
- SVG and markup: Embed a raster image inside an SVG `<image>` or a single-file HTML document.
- Prototypes and demos: Ship a self-contained page with no asset folder to keep in sync.
- Bundled extensions: Browser extensions and userscripts often ship icons inline to avoid packaging files.

### Frequently asked questions
Q: What is the difference between this and Base64?
A: Base64 is only the encoded payload. A data URI is that payload plus the `data:image/png;base64,` prefix that tells the browser how to interpret it. Use the data URI wherever a URL is expected — CSS `url()`, an `img src`, an SVG `<image>`. Use raw Base64 for JSON fields and APIs.

Q: Does it work in every browser?
A: Data URLs for images are supported everywhere, including all current browsers and effectively every email client that renders HTML at all. The one common exception is older Outlook desktop builds, which block inlined images in some configurations.

Q: How big will the string be?
A: Roughly a third larger than the original file, because Base64 encodes three bytes into four characters. A 3 KB icon becomes about 4 KB of text. That overhead is why inlining is a good fit for small assets and a poor one for photographs.

Q: Is my image uploaded anywhere?
A: No. The conversion happens in your browser using the canvas API. The file never reaches a server, so unreleased artwork and client work stay private.

Q: Can I convert an SVG this way?
A: Yes, an SVG can be uploaded and the tool returns a data URL for it. Note the result is normalised to a raster PNG data URL, so it stops being resolution-independent. If you need the vector to stay a vector, inline the SVG markup directly instead.

Q: Is it free?
A: The data URL is generated and shown for free, and you can copy it without an account. Full-resolution image downloads elsewhere on the site use credits, but reading and copying this string does not.

All tools: https://www.image-color-changer.com/llms.txt