Get pixel values of a certain point on the screen

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Hello, I’m new here so if there is any formatting error, I’m sorry!

I am developing a WEB solution and I need to load an image in the browser and select 4 points within that image and get its values from the pixels that were selected in these 4 points. My doubt is how to make such selections and capture their pixel values? It is possible to do this with some WEB language (PHP, Javascript, CSS, etc)?

I have already done several searches on Google and the closest I found was the use of PHP GD library, but it also did not meet what I need.

I await your reply and thank you for your cooperation!

php javascript css

  • I advise you to use the canvas HTML5

  • ref. Pixel Manipulation

  • You want to do it next to the server?

  • 1

    Hello Everyone! Thank you for the reply. lazyFox I will study on the canvas. @Theprohands the pixel markup would be on the same client side. Thank you!

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