What happens if the Base64 string I paste is invalid?

The tool automatically detects invalid characters and shows a warning message indicating at which position the error is.

Is the quality of the downloaded image the same as the original?

Yes. Base64 encoding/decoding is a lossless process; the original pixel data is preserved unchanged.

Which browsers does it work in?

It works smoothly in all modern browsers, including Chrome, Firefox, Safari, and Edge.

Can I process very long Base64 strings?

Base64 strings a few megabytes in size are processed smoothly. For very large files, browser memory capacity is the determining factor.

Can SVG images also be decoded?

Yes. In Base64 to Image mode, strings containing SVG are also rendered and shown in the preview panel.

Base64 Image Tool - Encode and Decode

Upload Image

Click, drag & drop, or paste (Ctrl+V)

JPG, PNG, WebP, SVG, GIF

💡 Usage tips

HTML email: Embed the image directly in the email body instead of linking to it — improves Outlook/Gmail compatibility.
CSS: background-image: url('data:image/png;base64,...') — skips an extra HTTP request for small icons.
Web apps: Handy for instant upload previews.
Limit: Base64 inflates file size by about 33%. Avoid encoding images over 100KB — it hurts performance.

Auto-deleted in 7 days

256-bit SSL

Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

Download

Get result in your format.

Frequently asked questions

This tool is bidirectional: you can obtain Base64 from an image file and also obtain the image back from a Base64 string.

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Image ↔ Base64 Converter — Data URI