Rule of Thirds

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