Cognito-forms – Retrieve previous versions of Cognito Forms

I am a developer for Cognito Forms.

There is not a technical limit, as we have been developing the underlying frameworks for Cognito Forms for over five years, and have spent a lot of time optimizing them for extremely large forms. For example, all of the calculations and dynamic behavior on our forms are event-driven, so calculations and HTML rendering are only triggered for the fields that are dependent on the fields that change.

Having said this, Cognito Forms runs entirely in the browser using HTML5, JavaScript and CSS, so they are dependent on the performance of the browser and hardware. This means there will be cases on older devices where extremely large forms will not perform as well as smaller forms.

If you have a really long form, I recommend using page breaks instead of separate forms. We specifically implemented page breaks in a way that maximizes performance by only rendering the page that is visible (versus rendering all of them and hide/show). This will improve the performance of really long forms.

Developer on Cognito Forms here! In general, this error can occur if there is a problem with the JavaScript on your page or cross-origin requests are being blocked by your browser.

I would be more than happy to take a look at your specific form. If you could, please file a bug report and I will take a look to see if there might be something specific to your form that might be causing a problem.