Rule of Thirds

Simple extension to draw a 3 x 3 grid on an image to help visualise the Rule of Thirds.

What is Rule of Thirds?

'Rule of Thirds' is a Chrome extension designed for photographers and visual artists. It overlays a 3 x 3 grid on images larger than 100px x 50px found on any web page, to aid in visualizing the Rule of Thirds, a principle in photography which suggests that an image can be divided into nine equal parts and that the most important compositional elements should be placed along these lines or at their intersections. The extension ignores images with 'display: none' styles and features a fix for circles on intersection points.

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Stats

By: Ivor Potter

View on Chrome Web Store

Users: 5,000+ ▼ -1,000

Rating: 4.40 (20)

Version: 1.5 (Last updated: 2014-08-29)

Creation date: 2014-08-29

Risk impact: High risk impact

Risk likelihood: Low risk likelihood

Manifest version: 2

Permissions:

tabs
http://*/*
https://*/*

Size: 57.25K

Stats date:

Chrome-Stats Rank

# 13999 ▼ 1192

Other rankings

#749 in Art & Design ▼ 7 #7 in rule keyword 7 #107 in grid keyword 28

Other platforms

Not available on Firefox

Not available on Edge

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Summary

Analyze keywords

The is a simple extension to apply a 3 x 3 grid over any images found on a web page which are larger than 100px x 50px. The purpose of the grid is to help photographers visualise the Rule of Thirds.

By displaying the grid over the image it is very simple to identify if a photograph's main focal points comply with the Rule of Thirds or not.

v1.5 - 29 August 2014

Ignore images with "display: none" styles
Fix circles on intersection points so they are drawn fully

User reviews

User reviews summary

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Simple and easy to use
Useful for teaching photography or art
Convenient for quick photo analysis

Cons

Doesn't work for some users
Limited features (e.g. support for local files, YouTube videos)
Some users want custom grid options or color settings

Most mentioned

Useful for teaching photography or art
Doesn't work
Simple and easy to use

Recent reviews

any chance you can add support for local files, ie images dragged into the browser "file://" ?

Matthew Roderick, 2024-03-12

Add YouTube support

Iaroslav Smirnov, 2023-08-19

better than i could've imagine

Max Volodin, 2021-02-12

View all user reviews

Safety

Risk impact

Rule of Thirds is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Rule of Thirds if you trust the publisher.