Baseliner

by J. Pedro Ribeiro · jpedroribeiro.com · Developer Tools

FeaturedEstablished publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Baseliner adds horizontal & vertical lines to help you align your grid to any website.

Users

5,000

0 in 30 days

Rating

4.3 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#14K

#12K among extensions

Version

7.2

updated 28 Apr 2024

Users

monthly, 3 years

Latest, 15 Oct 2026: 5,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 47 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Baseliner

Adds a horizontal and/or vertical lines on top of any website. The Baseliner extension adds a fully customisable CSS layer on top of any website to help you align your design and ensure the grid is in place. -------------------- The best place for support is not in the reviews section below, but on the Baseliner GitHub repo: https://github.com/jpedroribeiro/Baseliner/issues Check out full set of features and how to contribute on our GitHub page: https://github.com/jpedroribeiro/Baseliner