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 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.
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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

# 12401 ▲ 15
Other rankings
#1087 in Art & Design ▼ 36 #2 in rule keyword 22 #95 in grid keyword 6 ▼ 3

Other platforms

Not available on Firefox
Not available on Edge
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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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.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 useful for learning photography and the rule of thirds
  • Simple and effective functionality
  • Helps students to analyze images directly on discussion pages
  • Positive user experience, exceeding expectations
  • Good options for customization
Cons
  • Doesn't support local files or YouTube
  • Does not work for videos
  • Some users encountered issues with functionality
  • Desire for additional grid options (e.g., 5x5 grid)
  • Visual elements like red circles at intersections could be improved
Most mentioned
  • Add YouTube support
  • Amazing this is so good
  • I'm telling my photography students about this!
  • Awesome extension
  • Thanks very helpful
Recent 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.

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