The file is too large and cannot be loaded completely due to the browser limitations

posted on January 27th, 2026

Answered

Varun asked on January 27, 2026

Hi,

We were trying to load 300 mb csv directly into the browser using Flexmonster by specifying it in the filename property in the data source and getting error "The file is too large and cannot be loaded completely due to the browser limitations". This setup was working in old version. Has something got changed in the new build?

dataSource: {
type: "csv",
filename: "https://example.com/api/data"
}
Thanks,
Varun

6 answers

Public

Solomiia Andrusiv ⋅ Flexmonster ⋅ January 27, 2026

Hello, Varun!

Thank you for reaching out to us.

Kindly note that CSV files larger than 256 MB are not fully loaded in Chrome due to browser limitations. One of our clients noticed this behavior a while ago, and we subsequently added a pop-up message to inform users when the loaded data is incomplete. Please rest assured that Flexmonster's data-loading functionality has not changed.

As a possible workaround, we recommend trying the JSON array of arrays approach with dataSource.useStreamLoader property enabled. Please find more details by the link: https://www.flexmonster.com/doc/typical-errors/#chrome-large-data-error

Hope you will find our answer helpful.

Kind regards,
Solomiia

Public

Varun ⋅ January 27, 2026

Thanks, It helps. You could close the ticket

Public

Solomiia Andrusiv ⋅ Flexmonster ⋅ January 28, 2026

Hello, Varun!

Thank you for your feedback.

We are happy that our answer was helpful.

Feel free to reach out to us in case of any other questions.

Kind regards,
Solomiia

Public

Varun ⋅ February 11, 2026

It seems that loading data gets paused when i push result with streamloader if I switch to another screen, while it works seamlessly if I keep cursor on the screen. How can we fix it?

Step to reproduce the issue

Load heavy data using stream loader
Once loading is started , Minimize the browser and navigate to another screen.
Check result(loading % ) after some time

Public

Solomiia Andrusiv ⋅ Flexmonster ⋅ February 13, 2026

Hello, Varun!

Thank you for reaching out to us.

Kindly note that the described behavior is caused by browser optimizations. Modern browsers can throttle background tabs to save resources, so that the data loading and exporting are slowed down or stopped completely when switching to another tab or minimizing the window.

Flexmonster cannot affect this behavior of the browser, so we recommend not switching to other browser tabs and not minimizing the browser window during the data loading process.

Hope it helps.

Kind regards,
Solomiia

Public

Varun ⋅ February 19, 2026

Hi Solomiia,

Does Flexmonster support Apache Arrow stream loading?

Thanks,

Varun

↪ Nadia Khodakivska created a new ticket #77599 from this answer

The file is too large and cannot be loaded completely due to the browser limitations

6 answers

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