# Baseliner

> An extension for designers and developers who care about the grid.

Canonical page: [https://chrome-stats.com/d/baseliner-add-on](https://chrome-stats.com/d/baseliner-add-on)

## Overview

- **ID:** `baseliner-add-on`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** jpedroribeiro
- **Category:** web-development,appearance
- **Daily users:** 64
- **Rating:** 4.33 / 5 (6 ratings)
- **Version:** 7.2
- **Last updated:** 2024-04-27
- **First published:** 2017-12-25
- **Size:** 211 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/baseliner-add-on/)
- **Website:** [https://www.jpedroribeiro.com](https://www.jpedroribeiro.com/)

## Description

Baseliner is a Chrome extension designed for designers and developers who prioritize precise grid alignment in their web projects. It overlays customizable vertical and horizontal baselines onto any website, providing visual guidance to ensure interface consistency and pixel-perfect design.

Users can easily adjust the color and opacity of the grid lines to suit their workflow, making it simple to compare the grid directly with the existing design. The extension remembers each website's settings locally, allowing users to return and retain their preferred grid overlay configurations. Continuously improved by its creator J. Pedro Ribeiro and the open source community, Baseliner offers an indispensable toolset for interface development and web design accuracy.

## Rankings

- #14,344 — Overall
- #40 — base
- #74 — line
- #103 — grid
- #116 — sell
- #165 — development

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `scripting`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Gridly](https://chrome-stats.com/d/gridly) — 10 users, 5.00 / 5
- [DevPora Grid](https://chrome-stats.com/d/devpora-grid) — 2 users
- [OLI Grid CSS](https://chrome-stats.com/d/oli-grid-css) — 336 users, 4.33 / 5
- [GridLens for Bootstrap](https://chrome-stats.com/d/gridlens-for-bootstrap) — 1 users
- [PageLiner](https://chrome-stats.com/d/pageliner) — 65 users, 2.33 / 5
- [Grid](https://chrome-stats.com/d/grid-draw) — 2 users
- [Grid Overlay](https://chrome-stats.com/d/grid-overlay) — 9 users
- [Ruler Grid](https://chrome-stats.com/d/ruler-grid) — 39 users
- [Responsive Grid](https://chrome-stats.com/d/responsive-grid) — 1 users
- [Gridt](https://chrome-stats.com/d/gridt) — 24 users
- [CSS Grid](https://chrome-stats.com/d/css-grid) — 6 users
- [PixelGrid](https://chrome-stats.com/d/pixelgrid) — 59 users, 4.50 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/baseliner-add-on)