# Consistent image size across screens

**URL:** <https://discourse.psychopy.org/t/consistent-image-size-across-screens/12517>\
**Category:** Online experiments\
**Tags:** screen\
**Created:** [April 17, 2020, 4:16pm UTC](https://discourse.psychopy.org/t/consistent-image-size-across-screens/12517 "2020-04-17T16:16:17Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ricardoV94](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/ricardov94/32/6334_2.png) [@ricardoV94](https://discourse.psychopy.org/u/ricardoV94)\
**Post date:** [April 25, 2020, 6:27am UTC](https://discourse.psychopy.org/t/consistent-image-size-across-screens/12517/4 "2020-04-25T06:27:00Z")

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It is actually possible to ask participants for the screen dimensions. The standard procedure is to ask them to resize a rectangle on the screen until it is the same size as an object we know the dimensions of (eg. credit card). jsPsych has a built-in plugin for this: [https://www.jspsych.org/plugins/jspsych-resize/](https://www.jspsych.org/plugins/jspsych-resize/)

Psychopy could implement a helper method that does the same

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