Image to Base64 Converter

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Drop an image below to instantly encode it to Base64 — everything runs in your browser, nothing is uploaded to the server.
Drag & drop an image here
or click to browse — you can also paste from your clipboard
Choose image
Preview
  • File name
    —
  • Type
    —
  • Dimensions
    —
  • Original size
    —
  • Base64 size
    —
    • Your Base64 string will appear here once you add an image.

    About Image to Base64 Converter

    The Image to Base64 converter encodes any image into a Base64 string or a ready-to-use data URI, entirely in your browser. Drag a file onto the drop zone, browse for it, or paste an image straight from your clipboard — the encoded output appears immediately, alongside a preview.

    You choose between raw Base64 (just the encoded bytes) and a full data URI in the form data:image/…;base64,…, which can be pasted directly into a CSS background-image, an HTML img src or a JSON payload. A details panel reports the file name, MIME type, pixel dimensions, original size and encoded size.

    Because the file is read locally with the FileReader API, nothing is uploaded to any server — useful when the image is a logo, a screenshot of an internal dashboard or any other asset you do not want to hand to a third party.

    How to use Image to Base64 Converter

    1. Drag and drop an image onto the page, click to browse, or paste one from your clipboard.
    2. Pick the output format: raw Base64 or a data URI.
    3. Review the preview and the image details (type, dimensions, original vs encoded size).
    4. Click Copy Base64 to grab the string for your CSS, HTML or JSON.

    Frequently asked questions

    No. The file is read and encoded locally in your browser with the FileReader API. It never touches a server, which is why the result appears instantly even for larger images.

    Yes, it is free with no limits on how many images you convert.

    Inlining suits small assets — icons, tiny logos, email images — where saving an HTTP request matters more than cache efficiency. Large photos are better served as normal files, since Base64 also disables independent caching.

    Base64 represents every 3 bytes with 4 ASCII characters, so the encoded string is roughly 33% larger than the original file. The details panel shows both sizes so you can judge the trade-off.

    Raw Base64 is only the encoded bytes — useful for APIs and JSON fields. A data URI wraps those bytes with the MIME type prefix (data:image/png;base64,…) so browsers can render it directly in src attributes and CSS url() values.
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