What is a Base64 data URI used for?

It lets you embed an image directly inside HTML, CSS, or JSON as text, avoiding a separate network request for small images or icons.

Does Base64 increase file size?

Yes, Base64 encoding increases the data size by roughly 33%, so it's best suited to small images rather than large photos.

Is the image uploaded anywhere?

No. The file is read and encoded locally using the browser's FileReader API — it never leaves your device.

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Image to Base64 Converter

Turn any image into a Base64 data URI you can paste directly into HTML, CSS, or JSON — handy for embedding small icons or images without a separate file request. Everything is encoded locally in your browser.

Drag & drop an image, or click to browse

Any image format · encoding happens entirely in your browser

How to use Image to Base64 Converter

1Upload the image you want to encode.
2The Base64 data URI is generated instantly below the preview.
3Copy the string, or download it as a .txt file.

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