Image Histogram
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-17.
Reveal the secret world of image histograms ...
Image Histogram allows you to quickly view the image histogram for images on the web.
To use, simply right-click on an image and choose "Toggle Histogram," and the image histogram will be overlaid on the image. To go back to your original image, simply choose "Toggle Histogram" again.
Separate Red, Green, and Blue channel histograms can also be shown. To switch between color and normal histograms, click the histogram icon in the in the browser bar, or go to the Image Histogram Options from the Chrome Extensions page.
New in version 0.1.8: Fixes for 500px.com's site redesign
New in version 0.1.2: Bug fixes, options page reorganized.
New in Version 0.1.1: Added: a browser icon for toggling between color and normal histograms, along with options to use a "smart" histogram color filter, and the ability to show the color histogram as either three graphs separated vertically, or all in one.
New in Version 0.0.11: Color Histograms!
New in Version 0.0.10: Work around several problem scenarios where the histogram wouldn't show up.
New in Version 0.0.7: 500px photo page support!
New in Version 0.0.6: Flickr photo page and lightbox support!
In some cases where the page author is preventing right-click by putting another element above the image, the histogram won't work.
A note about permissions: In order to access the image data needed to compute the histogram, this extension needs your permission to access data on webpages you visit. It only accesses image data, and only then when you select the "Toggle Histogram" action. It neither sends or receives additional external data.
Latest reviews
I use google photos as backup for my work and sharing. It works prefectly on it. This is what i wanted..
This extension hasn't been updated in 4 years. No longer works with 500px or Flickr.
Does exactly what I need it to do. I recommend people try it and see if it's what they need.
Doesn't work for local files.
Love the tool. It is a quick and easy way to view the histogram of images. It doesn't work on sites where they use tons of scripts to hide the actual image, but if the actual image is directly available it is very convenient.
Doesn't work in a whole bunch of places...
it doesn't work in Facebook
doesn't work with local files?
Works just fine on all of the sites where I want to use it. The ability to toggle between luminosity and channel-separated histograms is really great.
WHAT SECURITY POLICY?! The image is ALREADY IN MY CHACHE!
Doesn't work with facebook, google plus, 500px, flickr, etc, and these are the sites where most people share their photos. No point in using this. Update: 500px and flickr support has been added, and it's really impressive! Great job!
Doesn't work with Google Plus due to the security policy.
