EpicRuler
PixelSnap
Meazure
PicPick
Bluegrams Screen Ruler
Shottr
KRuler
xScope
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EpicRuler
CodeHeraldBased on our record, EpicRuler seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can check it out on https://epicruler.com. Source: over 4 years ago
For EpicRuler I'm using this code to get the luminance of a pixel, which I think could be used in your case too, you just have to convert the RGB part to HEX:. Source: over 4 years ago
PixelSnap - Measure every pixel on your screen with ease โจ
Meazure - What are the dimensions of that image? How big is this window?
PicPick - PicPick screen capture software enable you to grab an image on your computer screen, save, print, add effects, and share.
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
Shottr - Shottr is a free macOS screenshot app with scrolling screenshots, OCR, annotation and measurement instruments.
KRuler - KRuler is a screen ruler tool for measuring the size, in pixels, of items on the screen.