Image to Base64 (Data URI) Converter

Convert any image to a Base64 data URI - for inline CSS or HTML

🔒 100 % in-browser🆓 Gratuit pour toujours⚡ Pas de signup
Note : L'interface de l'outil ci-dessous n'est actuellement disponible qu'en anglais. On traduit les UI une par une. Voir cet outil en anglais →
Drop an image or click to pick
PNG, JPG, SVG, GIF, WebP - up to 10 MB

Everything runs locally - the image never leaves your browser. Base64 encoding inflates size by ~33%; only inline small icons, not photos.

Comment ça marche

  1. 1
    Drop an image

    Drag a file into the drop zone or click to pick - up to 10 MB.

  2. 2
    See the size impact

    Base64 inflates size by ~33%. The tool shows original size, encoded size, and the overhead.

  3. 3
    Copy the format you need

    Data URI on its own, CSS background-image, or a full <img> tag.

À propos de Image to Base64 (Data URI) Converter

Free online image to Base64 converter. Drop or pick any image (PNG, JPG, SVG, GIF, WebP) to get a data URI ready to paste into CSS or HTML - with size analysis and one-click copy of the URI, a CSS declaration, or an <img> tag. Runs entirely in your browser. Image to Base64 (Data URI) Converter sur 712 Tools tourne entièrement dans ton browser via des APIs JavaScript natives - aucun server ne voit jamais tes données. Résultats instantanés, privacy complète, et aucune limite d'upload.

Que ce soit pour une session de debug, un sanity check rapide ou un incident en prod, cet outil est gratuit à utiliser autant que tu veux. Pas de watermarks, pas de signup et pas d'ads dans l'outil.

Questions fréquentes

Is the image uploaded?

No. The file is read locally via FileReader - nothing leaves your browser.

When should I inline an image?

For tiny icons (under a few KB) where an extra HTTP request costs more than the size overhead. Never inline photos - the ~33% Base64 overhead kills page weight.

What about SVGs?

SVGs work fine as data URIs and are often small enough to inline. Consider URL-encoding rather than Base64 for SVG - it's actually smaller.

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