Image to Base64
Encode an image as Base64 or a data URL with preview, copy and text download.
Your files are ready.
Preview or download the results below. Your originals have not been changed.
How to use Image to Base64
- Choose your images. Use the file picker or drag them into the workspace. Files are read locally on your device.
- Check your selection. Base64 is not encryption or compression. It increases size by about one third and retains original image metadata. Up to 10 MB and 24 megapixels.
- Process and download. Save the finished files, then check the result before using it. Your original files stay unchanged.
What this tool does
Choose or drop a PNG, JPG or WebP, preview it, toggle the data URL prefix, copy the encoded text or download a text file. The original image bytes are encoded without conversion.
Before you start
Base64 is not encryption or compression. It increases size by about one third and retains original image metadata. Up to 10 MB and 24 megapixels.
The decoded image limit is 10 MB. Very large documents or high-resolution images may need more memory than a phone can provide. Choose a smaller file if your browser runs out of memory.
Your files stay with you.
File contents are processed on this device. We do not upload your selected files to a server or save them to a Pactuno account. Closing or clearing the page releases this session’s files. Downloaded results remain wherever you save them.
Read the tools privacy detailsQuestions, answered.
Is Image to Base64 free?
Yes. This tool is free to use without an account. You can process files again as needed, within the per-run limits shown above.
Can I use it on my phone?
Yes, in a current browser with JavaScript enabled. Larger files may work better on a computer with more available memory. Processing depends on your device, not a server queue.
Will the output look exactly the same?
Resizing, cropping, color changes and lossy conversion can alter appearance. JPG does not support transparency. Keep the original and compare the preview before replacing it.