Managing files


In order to customise your Payment Pages, you can upload an HTML file for each of the pages hosted by Trust Payments you would like to customise and/or a single CSS and/or JavaScript file that will be applied to every page in the session.

Files are uploaded using the MyST File manager. Click here to learn more.

When uploading the files, the filenames must use the following structure, where “[stprofile]” is the name of your profile:

Filename Description Screenshot

The payment choice page

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The payment details page

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Page shown when customer refreshes their browser before the initial request has been completed

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The 3-D Secure redirect page

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The response page

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[stprofile].css You can upload a single CSS file that will modify all pages for the given stprofile  
[stprofile].js You can upload a single JS file that will modify all pages for the given stprofile  


When uploading text files (e.g. HTML, CSS, JS), these must be encoded in UTF-8 or ASCII.
We strongly recommend that you upload new mark-up to your test site reference and ensure you are able to process test transactions successfully, using all available payment methods, before making any changes to your live site reference. Ensure that all expected display elements and text is visible and legible, and that the customer can enter their address and contact details if required.


e.g. To customise the appearance of the payment details and response pages, by applying a profile you have named “birthday”, you could upload the following files:



Your progress

Now that you understand the file structure required, you can start to write your mark-up.