extension ExtPose

Rule of Thirds

CRX id


Description from extension meta

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

Image from store Rule of Thirds
Description from store 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 * Replace JQuery dependency with native functions v1.5 - 29 August 2014 * Ignore images with "display: none" styles * Fix circles on intersection points so they are drawn fully

Latest reviews

  • (2023-08-19) Iaroslav Smirnov: Add YouTube support
  • (2021-02-12) Max Volodin: better than i could've imagine
  • (2019-09-23) MANDEM Steinman-Arendsee: I'm telling my photography students about this! These students are just learning to "see" the rule of thirds (and other elements) so they still very much need guidance like this. However, they simply aren't going to spend the time to save images posted in their group discussions and apply the thirds lines to the photos using another program or tool. This is something they can utilize right there on the discussion page without any extra steps, which means they'll actually use it.
  • (2019-08-31) Ankit Sharma: Amazing this is so good.
  • (2018-03-28) Usef: doesn't work
  • (2017-05-17) Sai Gupta: Hi Team.. Its awesome .. Can i get grid of 5*5 .. or if u can help me how can i change it would be more helpful..Please can i get the grid of 5*5..
  • (2017-04-20) SPIRITUALITY: But black and white glow lines could be better. I am using it to learn drawing.
  • (2017-02-07) Devon Hatcher: I love this extension. I wish it worked for videos too!
  • (2016-07-30) Женя Двойнишников: Программа хорошая и очень, как мне кажется, редкая. Хочу попросить, Творца или Творцов, сделать "Hot key" и настройку цветов линий. Спасибо.
  • (2016-07-22) Bathiya Ranathunga: thanks very helpful
  • (2016-04-26) Jonathan Diaz: Increible!
  • (2014-10-31) 陳炳宏: 很實用的東西,方便觀察照片構圖
  • (2014-07-15) Mathias Ciarlo Thorstensen: This is excellent, but should remove the red circles at the intersections.
  • (2014-06-12) Robert Person: Does exactly what I need it to do. Simple and useful.
  • (2013-08-12) Andreas Raun Arneberg: Great app simpel and does the job
  • (2013-05-20) Adrian North: Simple, and does the job well. Great idea, done well.

Latest issues

  • (2017-05-17, v:1.5) Sai Gupta: I want Grid of 5*5
    Hello Team.. Its very useful extention.but its providing only the grid of 3*3.. can u pls help me out with grid of 5*5
  • (2017-04-04, v:1.5) phat nguyen: Nice work! But need one option
    Really love this extension, but wonder an option to allow it automatically draw grid for all images, instead of manually click on the icon


1,000 history
4.4 (20 votes)
Last update / version
2024-06-03 / 1.7
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