Show YIQ channels
See brightness plus orange-blue and purple-green. 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. Each image becomes a triple-width PNG with Y, I and Q panels side by side.
Nothing is uploadedHow it works
Add your images
Choose JPG, PNG, WebP, GIF, BMP, AVIF or HEIC images to split into YIQ panels.
View the YIQ strip
Each photo becomes one wide PNG with luma, I and Q grayscale panels joined left to right.
Download the strips
Save each strip PNG on its own or download all strips together as a ZIP.
What the Y, I and Q panels show
The left panel shows Y luma brightness as black-and-white television would show it. The middle shows I chrominance along an orange-blue axis, and the right shows Q along a purple-green axis from NTSC colour TV.
Faces are bright in luma with warm I values, while blue skies are dark in I and bright in parts of Q. Grey objects sit mid-grey in both chrominance panels.
How to read the strip
Add one or more images and the tool builds a wide PNG joining the luma and two chrominance panels side by side. The result keeps full resolution, so broadcast-style brightness and colour separation stays clear.
Files are handled in temporary tab memory and discarded after you leave. No lasting copy is written anywhere except the PNG you choose to save.
When a YIQ view helps
Use YIQ to learn how old TV kept brightness separate from colour, or to check contrast without colour distraction. The luma panel is a good black-and-white version of your photo.
For digital video work use Show YCbCr channels, which is the modern equivalent for JPEG and video. Download the YIQ strip PNG on its own, or convert a batch and collect everything in one ZIP.
Questions
Are my images uploaded?
No. Your images are opened and split inside your browser. They never leave your device.
What are I and Q?
I and Q are colour axes from NTSC TV: I runs orange to blue-green and Q runs purple to green. Mid-grey means no colour on that axis.
Is YIQ still used today?
Rarely for new work, but luma-chroma separation lives on in YCbCr for JPEG and video. YIQ is great for learning that history.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
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