Show RGB channels
See red, green and blue intensity side by side. Your photos never leave your device.
- 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 R, G and B 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 RGB panels.
View the RGB strip
Each photo becomes one wide PNG with red, green and blue 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 R, G and B panels show
The left panel shows red light intensity, the middle shows green and the right shows blue. Each panel is a grayscale view where white means a lot of that primary and black means almost none.
A pure red flower appears bright in R and dark in G and B, while a white wall is bright in all three. Comparing the three side by side reveals colour casts and clipping you miss in the colour view.
How to read the strip
Add one or more images and the tool builds a wide PNG joining the red, green and blue panels side by side. The result keeps full resolution, so small details stay visible for inspection and teaching.
Your pictures are processed in this tab only and wiped when you close it. No account, no queue and no copies remain on any computer except your own.
When an RGB view helps
Use the strip to learn colour mixing, to check white balance or to prepare figures for a lesson. Skin tones should show more red than blue, and skies should show strong blue with little red.
For print work compare with Show CMYK channels, which shows ink rather than light. Download the RGB 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 do the three panels mean?
Left to right they are red, green and blue intensity from black (none) to white (full). A cyan sky is dark in red and bright in green and blue.
Does the strip keep full resolution?
Yes. Each panel is the same width and height as the original, joined into one PNG three times as wide.
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