# New but empty tab opens when trying to pilot psychopy-experiment via Pavlovia

**URL:** <https://discourse.psychopy.org/t/new-but-empty-tab-opens-when-trying-to-pilot-psychopy-experiment-via-pavlovia/41505>\
**Category:** Online experiments\
**Created:** [September 23, 2024, 8:54am UTC](https://discourse.psychopy.org/t/new-but-empty-tab-opens-when-trying-to-pilot-psychopy-experiment-via-pavlovia/41505 "2024-09-23T08:54:26Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)\
**Post date:** [October 1, 2024, 10:18am UTC](https://discourse.psychopy.org/t/new-but-empty-tab-opens-when-trying-to-pilot-psychopy-experiment-via-pavlovia/41505/4 "2024-10-01T10:18:03Z")

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I suspect that you have not correctly converted your experiment from degrees to height units.

To start with you’ll need to decide on a conversion factor that works for you.

If you want consistent sizes online then you will need to use a credit card routine and/or a blind spot routine.

Look at ScreenScale and BlindSpot in my online demos

> [@PsychoPy Online Demos](https://discourse.psychopy.org/t/psychopy-online-demos/22319):
>
> If you have routines or experiments that are likely to be useful to others, please create a post in this thread, editing your post to add new demos so there is one post per creator. Ideally set your demos so they can be tested without consuming a credit (if you don’t have a site license) by adding a final routine that can’t end, disabling save incomplete results and adding a small number of credits. Please do not discuss the demos in this thread or create more than one post unless you have a la…

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