Creating custom CSS theme

If you would like to use yours icons for the buttons or/and change colors of the TWPdfViewer, you can. Take some of the existing CSS themes (like css/light/tw-pdf-viewer-light.css) as a template, change its colors and src to your image buttons files.

On your HTML page, instead of link to:

HTML example

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<link rel="stylesheet" id="tw-web-theme" href="/_content/Terminalworks.PdfViewer.AspNetCore/css/tw-pdf-viewer-light-theme.css"

use:

HTML example

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<link rel="stylesheet" href="{path_to_your_css}" />

Caution
You can use multiple instances of the viewer on the same page, but it isn't possible to use different CSS theme. CSS viewer theme is loaded per page and affects all the instances.

Other Resources

How to apply license?

Changing the theme

Managing fonts

Support Availability - May 1st

On May 1st, 2025, our support team will be available:

2 PM to 10 PM CET: Actively supporting via phone, chat, and email.
Before 2 PM CET: Available exclusively via email.

For assistance, please contact us at [email protected], and we will respond to your inquiry as soon as we can.