🖼️ Base64 to Image Decoder Offline
Decode Base64 strings to images. 100% offline - your data never leaves your browser.
How to Use
Paste a Base64 string or Data URI, click Decode, and the image preview appears below. If you want to save it, use the download button. I use this when debugging API responses that return image data.
- Paste Base64 or a Data URI.
- Click Decode to render the image.
- Verify the preview is correct.
- Download the image if needed.
Use Cases
Common scenarios for Base64 decoding:
- API response inspection to confirm image payloads.
- Database verification for stored thumbnails or avatars.
- Email assets encoded in HTML messages.
- Debugging image encoders during development.
Tips & Best Practices
- Include the correct header: Use
data:image/png;base64,or a matching format. - Strip whitespace: Line breaks can break decoding in some browsers.
- Confirm file type: JPEG data won't render correctly with a PNG header.
- Use complete strings: Truncated Base64 will fail to decode.
Comparison with online tools
Online decoders require uploading encoded images. TurboUtil keeps everything local so sensitive images never leave your device.
Online decoders
- Upload Base64 strings to servers
- Potential data retention
- Require internet access
- Less safe for private images
TurboUtil
- Client-side decoding only
- No uploads or tracking
- Works offline after load
- Instant preview
FAQ
Does it support Data URIs?
Yes. Paste full Data URIs or raw Base64 strings.
Why is the preview blank?
Check that the Base64 string is complete and the header matches the image type.
Is my data uploaded?
No. All decoding runs locally.
Can I download the image?
Yes. Use the download button below the preview.