BGR to RGB
Restore normal colours from OpenCV order. Nothing is uploaded.
- Your files are never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Drop your images here
Images · up to 10 files, 100 MB each
or paste with Ctrl+VLive preview
Settings
No settings needed. Blue and red are swapped so BGR returns to normal RGB for viewing.
Nothing is uploadedHow it works
Add your images
Choose images saved in BGR byte order from OpenCV or vision code.
Swap to RGB
Each image is remapped with blue and red exchanged, restoring normal viewing colours.
Download RGB PNGs
Save each fixed PNG on its own or download them together as a ZIP.
Why BGR needs fixing
Screenshots and exports from OpenCV code often store blue first, so normal viewers show skies orange and sunsets blue. The pixels are fine, only the channel order is meant for code rather than eyes.
This tool swaps the outer channels once more, which is its own inverse: BGR becomes RGB again. After the fix, reds look red and blues look blue in any viewer.
Built for OpenCV users
Add BGR exports and convert with no settings to change. The same fixed swap used by RGB to BGR runs in reverse, so round-trips return exact colours apart from PNG re-saving.
All bytes stay within your browser session during the swap. Nothing is queued on a server and no preview image is kept after you leave.
Check and keep going
Verify by eye: skies should turn blue again and skin should lose its blue cast. If a file already looks normal, running the swap will invert it, so only convert true BGR sources.
For other orders use Reorder channels with six presets, and for channel study use Separate channels to save each plane alone.
Questions
Are my images uploaded?
No. The swap runs inside your browser. Your images never leave your device.
Is this the reverse of RGB to BGR?
Yes. Both use the same red-blue swap, so converting twice returns the original colours.
When do I need this?
When frames saved with cv2.imwrite look blue-orange in normal viewers. Swap once here before sharing or publishing.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
Related tools
More free tools that run on your device. No uploads