Rule of Thirds

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

Rule of Thirds Chrome Extension

Rule of Thirds is a simple Chrome extension that applies a 3 x 3 grid over images to help photographers visualize the Rule of Thirds, a principle for composing visually appealing photographs. The grid makes it easy to identify if an image's focal points align with the Rule of Thirds.
Download
Install from Chrome Web Store

Extension stats

Users: 6,000+
Rating: 4.40
(20)
Version: 1.7 (Last updated: 2024-06-03)
Creation date: 2014-08-29
Risk impact: Very low risk impact
Risk likelihood:
Moderate risk likelihood
Manifest version: 3
Permissions:
  • scripting
  • activeTab
  • storage
Size: 94.85K

Ranking

# 12,451 ▲ 552
Other rankings
#1615 in Art & Design ▼ 16 #2 in rule keyword 7 #81 in grid keyword 10 ▲ 8

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge
Want to check extension ranking and stats more quickly for other Chrome extensions? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Chrome Web Store.

Extension 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.

History

v1.7 - 2 June 2024

  • Switch from host_permissions to activeTab (extension does nothing until clicked)
  • Position grid correctly for local images (ie file:// protocol)
  • Add Options page to control grid size, colours & whether lines and/or circles are rendered
  • Support arbitrary sized grid

v1.6 - 21 May 2024

  • Migrate to Manifest v3
See more

User reviews

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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.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
  • Very helpful for photography students
  • Simple and useful functionality
  • Good for learning drawing and photo composition
  • Loved by users for its effectiveness
  • Great app, does the job well
Cons
  • Doesn't work for some users
  • Lack of support for local files
  • Lack of video support
  • Request for additional grid options (5x5 grid)
  • Need for customization options (hotkeys, color settings)
Most mentioned
  • Better than I could've imagined
  • Wishes for YouTube support
  • Request for additional grid types
  • Need for improvement on line visibility
  • Praise for its utility in learning composition
User reviews
any chance you can add support for local files, ie images dragged into the browser "file://" ?
by Matthew Roderick, 2024-03-12
Add YouTube support
by Iaroslav Smirnov, 2023-08-19
better than i could've imagine
by Max Volodin, 2021-02-12
View all user reviews

Extension safety

Risk impact

Rule of Thirds does not require any sensitive permissions.

Risk likelihood

Rule of Thirds is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

Upgrade to see risk analysis details

Similar extensions

Here are some Chrome extensions that are similar to Rule of Thirds:

Golden Ratio
Golden Ratio
Agentur Simon
4.00
706
Grids & Rulers
Grids & Rulers
https://jeremie.patonnier.net
4.80
3,000+
Grid Ruler
Grid Ruler
tgohn
3.76
100,000+
Page Ruler
Page Ruler
leocompson
3.97
500,000+
Rule of Three
Rule of Three
[email protected]
5.00
130
Dimensions
Dimensions
https://www.felixniklas.com
4.13
200,000+
GriDesign
GriDesign
https://www.gmtoppi.com
N/A
11
Grrrid
Grrrid
david marsalone
3.75
953
Ruler Measurement
Ruler Measurement
Vadim Albarov
3.33
30,000+
Zaqwes Guide Lines
Zaqwes Guide Lines
vda
2.43
238
CSS Grid Overlay
CSS Grid Overlay
https://imagentleman.github.io
4.43
10,000+
Dimensions Inspect | Gridman
Dimensions Inspect | Gridman
https://fenvox.com
4.01
10,000+