# Jagged circles in online experiment
**URL:** https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411
**Category:** Builder
**Tags:** pavlovia
**Created:** [December 9, 2021, 3:41pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411 "2021-12-09T15:41:49Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [December 9, 2021, 3:41pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411/1 "2021-12-09T15:41:49Z")
Description of the problem: I am using psychopy v2020.2.0. Even though I increase the num of vertices, the circles in my online experiment look jagged. How can I fix? Thanks in advance.
This topic has been created before, but I couldn’t find a working solution since I created the experiment in the builder.
I am using pixel as unit.
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [December 9, 2021, 5:17pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411/2 "2021-12-09T17:17:46Z")
Would it be appropriate to increase the thickness of the border? 1 pixel is bound to give a jagged edge.
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [December 9, 2021, 5:52pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411/3 "2021-12-09T17:52:03Z")
Thanks a lot for your help. Even if I change the line thickness to 2, it looks jagged. What do you think I should change?
By the way, it looks smooth in psychopy, this problem only exists in pavlovia.
Here are the properties:
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### Author:  [@bets](https://discourse.psychopy.org/u/bets)
#### Post date: [December 13, 2021, 12:56pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411/4 "2021-12-13T12:56:49Z")
Also, I upgraded psychopy to 2020.2.10. However, the circles are still jagged in pavlovia.
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### Author:  [@wakecarter](https://discourse.psychopy.org/u/wakecarter)
#### Post date: [December 13, 2021, 1:03pm UTC](https://discourse.psychopy.org/t/jagged-circles-in-online-experiment/26411/5 "2021-12-13T13:03:51Z")
You could try the latest version. However anti-aliasing is not as good online as locally.
> [@Visual stimulus edges appear blurred](https://discourse.psychopy.org/t/visual-stimulus-edges-appear-blurred/19535/8):
>
> Hi @toto, do you mean that the circle edges are pixelated ie. there is no antialiasing? If so you may be interested in the issue I created today on psychopy’s github page: I’ve managed to solve that issue by creating the window object with different parameters (see the issue above, the solution was suggested [here](https://discourse.psychopy.org/t/drawing-multiple-anti-aliased-lines/2593/11)) - this can not be done in the Builder directly unfortunatelly (AFAIK). But you could add a code component that replaces automatic builder window with a custom one. Let me know if yo…
Best wishes,
Wakefield