Image to Base64
Base64 turns a picture into a long string of text. That sounds odd, but it is genuinely useful: developers embed small images directly inside HTML, CSS, or JSON so a page needs fewer file requests, and many APIs ask for images as Base64 text instead of file uploads. This free Image to Base64 converter reads any image on your device and hands you the encoded text instantly, with buttons to copy the full data URL or the raw Base64 string on its own.
The full data URL starts with a short prefix, such as data:image/png;base64, which tells a browser exactly what kind of image follows. Drop that into an img tag or a CSS background and the picture appears without a separate file. The raw Base64, without the prefix, is what most APIs and programming tools expect. One honest warning: Base64 text is about a third larger than the original file, so it suits icons, logos, and small graphics. Embedding a huge photo makes pages heavy and slow. Everything runs in your browser; your image is never uploaded to a server.
How to use
- Click the file box and choose an image from your device.
- Check the details shown: file type, original size, and the Base64 length.
- Look at the preview to confirm you picked the right picture.
- Click Copy Data URL if you need the complete string for HTML or CSS.
- Click Copy Raw Base64 if a tool or API asks for the encoded text only.
Frequently asked questions
What is the difference between the data URL and raw Base64?
They carry the same image data. The data URL adds a prefix naming the image type, which browsers need to display it straight from text. Raw Base64 drops the prefix, which is the form most code and APIs expect to receive.
Why is the Base64 string bigger than my file?
Base64 represents three bytes of data with four text characters, so the output is always roughly 33 percent larger. That overhead is the price of sending binary data through places designed for text.
Which images should I convert?
Small ones: icons, logos, signatures, tiny illustrations, and test images for APIs. Large photographs are better kept as normal files, because the size increase slows down whatever contains the text.
Are my images uploaded anywhere?
No. The file is read and encoded by your browser on your device. It never leaves your phone or computer.