ICO to data URI converter.
Drop a favicon.ico and get a data:image/x-icon;base64 URI as a ready <link> tag, bare, or in an <img> or CSS. Encoded on your device only.
ICO to data URI converter.
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3 steps, no account. It runs in your browser and nothing is uploaded.
Drop the ICO
Drop the ICO onto the pane or choose it; the preview shows it.
Choose the snippet
Pick the <link> tag, the bare URI, an <img> tag or a CSS background line.
Copy or download
Copy the snippet to the clipboard or download it as a file.
Related tools
More ICO tools. Every one free, in the browser.
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Questions and answers
Before you trust the result: what to know about the format, the limits, your data and the tools next to it.
Put the <link> snippet in the page's head: <link rel="icon" type="image/x-icon" href="data:image/x-icon;base64,…">. The favicon shows at once, with no request for a file.
Single-file HTML apps, bookmarklets, offline pages, generated reports and email templates: anywhere the page has to carry everything itself.
The whole file, so every size the ICO holds is in the string, and the browser picks the one it needs as it would from a file.
A favicon is 1 to 5 KB; as Base64 that is 1.3 to 6.5 KB in the HTML. For a single-file page that is a fair price for a guaranteed icon.
ICO works in every browser including old Internet Explorer and holds several sizes; a PNG data URI is smaller and fine for modern browsers. For an embedded page, ICO is the safer choice.
Drop the ICO and choose the snippet: the <link> tag for a favicon, the bare URI, an <img> or a CSS background line. Copy it or download it.
No. The ICO is read and its frames decoded by JavaScript on your device; the page makes no request with your file. Load it, go offline and it still works.
No. The ICO to data URI converter is free and opens without a sign-in, an account or an install.
Nothing. The ICO to data URI converter holds your input in the page's memory, so closing or reloading the tab clears it, and it saves nothing in this browser.
Up to 20 MB per file, the limit the tool states under its drop area. A larger file is refused with a plain message instead of being decoded.
No, it takes one file at a time. If you drop or choose several, only the first is used; run the tool again for the next one.
No. The text is made from the file's own bytes, unchanged, so EXIF and every other metadata field stay inside it. Nothing is re-encoded or resized.
About a third longer: Base64 writes every three bytes as four characters. The status line shows the exact character count and the overhead for your file.
Closest to the ICO to data URI converter: ICO to Base64 encoder, ICO to PNG converter, PNG to ICO converter, SVG to data URI converter. Each opens on its own page, free and in the browser.
The ICO to data URI converter is one of 37 in its group. The group's page, /tools/ico, lists them all.
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