guideLinr is a developer tools chrome extension. it's a free extension , it has 760 active users since released its first version, it earns an average rating of 4.08 from 24 rated user, last update is 3923 days ago.
guideLinr provides rich, Photoshop-like guidelines for any page on the web. With guideLinr, you can create vertical or horizontal guidelines that will persist by URL. If you visit Google today and add guides, tomorrow they'll be back when you return. Right click on any element to add guides on any edge (top, right, bottom, left, or all). There are several different color options available, and the color of guides can be changed from the rich context menu available on each guide. There is an integrated distance measurement tool that shows distance between your guides as you move them. The measurements are now sticky so you can see them wherever you scroll. guideLinr guides can be dragged with your pointer, or moved with your arrow keys for more precise alignment. Hold Shift while you press arrow keys, and they move faster. There's an optional "Snap to Element" feature to help align guides to your elements while dragging. There's also a "Snap To Grid" feature that helps create or align guides to a grid of your choosing. The source for guideLinr is available here: https://bitbucket.org/slobaum/guidelinr/overview
You could download the latest version crx file or older version files and install it.
English.
71% user give 5-star rating, 6% user give 4-star rating, 24% user give 1-star rating. Read reviews of guidelinr
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It does not work
Like others, at first I thought it wasn't working (probably due to its age), but as the reviews were informative: to make it work with a web page you had open before installing the extension, you just have to refresh the page. Works like a champ and very useful!
Very useful! Sad, there are no updates since 2014.