# Upload Component file max size limited to 200 MB on Firefox

**URL:** <https://community.plotly.com/t/upload-component-file-max-size-limited-to-200-mb-on-firefox/18080>\
**Category:** Dash Python\
**Created:** [January 14, 2019, 3:11pm UTC](https://community.plotly.com/t/upload-component-file-max-size-limited-to-200-mb-on-firefox/18080 "2019-01-14T15:11:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kausiala](https://avatars.discourse-cdn.com/v4/letter/k/b5a626/32.png) [@kausiala](https://community.plotly.com/u/kausiala)\
**Post date:** [January 14, 2019, 3:11pm UTC](https://community.plotly.com/t/upload-component-file-max-size-limited-to-200-mb-on-firefox/18080/1 "2019-01-14T15:11:22Z")

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Hi Dash people!

I was trying out the upload component, firing a callback on the ‘filename’ property to load data from a h5 file. What I found out was that when running my app on Firefox, it wouldn’t trigger the callback if file size was \>200MB. On Chrome it works just fine. Any ideas why it doesn’t work on Firefox and/or workarounds?

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**Author:** ![Soerendip](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Soerendip](https://community.plotly.com/u/Soerendip)\
**Post date:** [April 17, 2020, 4:25pm UTC](https://community.plotly.com/t/upload-component-file-max-size-limited-to-200-mb-on-firefox/18080/2 "2020-04-17T16:25:36Z")

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I am trying upload with a 400MB to 1GB files on Chrome, it is not working and does not show why.