Base64 Decode
Decode Base64 strings back to text or images. Paste any Base64 encoded data and instantly see the decoded result.
- Data never leaves your device
- No server upload required
- Works completely offline
- No login or signup needed
How It Works
Base64 decoding converts Base64 encoded strings back to their original format. This tool automatically detects whether the decoded data is text or an image. For text, it displays the decoded string. For images, it shows a preview of the image. The decoding uses the browser's native atob() function. You can copy text results or download decoded images. All processing happens locally in your browser — no data is uploaded to any server.
Frequently Asked Questions
What is Base64 decoding?
Base64 decoding is the reverse process of Base64 encoding. It converts Base64 strings back to their original text or binary format.
Can I decode Base64 images?
Yes! The tool automatically detects if the decoded data is an image and displays a preview. You can then download the image.
What if I get an error?
If you see an error, the input might not be valid Base64. Make sure you're pasting the complete Base64 string without any extra characters.
What image formats are supported?
Any image format that can be embedded in Base64: JPEG, PNG, GIF, WebP, SVG, and more.