Title: fullscreen button not working
Last modified: March 17, 2025

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# fullscreen button not working

 *  Resolved [roro111](https://wordpress.org/support/users/roro111/)
 * (@roro111)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/)
 * Hi there,
 * Just downloaded the premium version of pdf embedder, but the toolbar’ “fullscreen”
   button doen’t seem to work on a pdf such as the one seen in the url I linked 
   here.
   Any reason for that? Thanks
 * RP
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffullscreen-button-not-working%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Slava Abakumov](https://wordpress.org/support/users/slaffik/)
 * (@slaffik)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18366033)
 * Hello [@roro111](https://wordpress.org/support/users/roro111/)
 * Something is removing specific CSS classes from the `<iframe>` that is used to
   embed the file on a page. Those classes are needed to perform the “fullscreen”
   action. Maybe there is a plugin that does some kind of optimizations or clean
   up?
 * There are also several JavaScript errors on your page which can also have a negative
   affect.
 *  Thread Starter [roro111](https://wordpress.org/support/users/roro111/)
 * (@roro111)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18366529)
 * OK, so here is what I found:
 * Nothing seems to change upon deactivationg Solid Security Plugin.
 * No other optimization/ Clean up plugin is installed (so I think)
 * This FULLSCREEN feature is not functional on a page like this one [https://biokineticshealthsystem.com/event/bio-kinetics-health-system-seminar-bern-switzerland2/](https://biokineticshealthsystem.com/event/bio-kinetics-health-system-seminar-bern-switzerland2/?doing_wp_cron=1742241172.1764059066772460937500)
   whether viewing it on laptop or smartphone
 * The same feature IS working fine on a page like this: [https://biokineticshealthsystem.com/professionals/](https://biokineticshealthsystem.com/professionals/)
   if seen on a laptop, but NOT working on a smartphone.
 * So, what to do from here? Could it be a theme issue? How to address this please?
   This is a pro website, and such a “Fullscreen “feature is a bit important to 
   us. We just paid the premium version, and there are also other issues, but that’s
   for later…
   Thanks for your help
 * RP
 *  Plugin Author [Slava Abakumov](https://wordpress.org/support/users/slaffik/)
 * (@slaffik)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18379546)
 * Frankly, I don’t know what’s happening.
 * It looks like something (3rd-party script? some other plugin? server?) is removing
   the `class` attribute from our `iframe` which breaks the fullscreen functionality.
   This is the first time ever we receive this kind of report about a problem.
 * I would recommend trying to deactivate plugins one by one on the staging environment
   to try to find what’s going on. You can also reach out to support through your
   account on wp-pdf.com, referencing this this thread.
 *  Thread Starter [roro111](https://wordpress.org/support/users/roro111/)
 * (@roro111)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18383333)
 * ok thank you
 *  Thread Starter [roro111](https://wordpress.org/support/users/roro111/)
 * (@roro111)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18388529)
 * Hello,
 * I tried to implement some pdf (as a premium PDF Embeder user) to see if issues
   are still happening thru a simple COLIBRI Theme editor (instead of having 2 editors
   like in the previous issue) and… problems still occur there: [https://biokineticshealthsystem.com/resources/](https://biokineticshealthsystem.com/resources/)
 * No fullscreen possibility, no zoom in/out, no page skipping….
 * I have a delegate access for this website, and the owner won’t be able to forward
   me the wp-pdf.com login details within a week… Could you please pass on this 
   issue to the wp-pdf.com support?
 * Thanks in advance..
 * RP
    [https://biokineticshealthsystem.com](https://biokineticshealthsystem.com)
   webmaster
 *  Plugin Author [Slava Abakumov](https://wordpress.org/support/users/slaffik/)
 * (@slaffik)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18392433)
 * On that last page (`/resources/`) it’s a different issue. The required CSS classes
   are present where they are needed, but the `div` where the PDF Viewer is located
   is not clickable – that’s because the PDF Viewer thinks that it’s inside the “
   mobile preview” mode, meaning there should be an overlay to display a special
   button “view in fullscreen”.
 * As the button isn’t visible – this means the plugin settings for mobile width
   are set incorrectly. You need to play with the mobile width value for those specific
   PDF files to make sure that the overlay is displayed. More details are available
   here: [https://wp-pdf.com/docs/premium-instructions-attributes/#mobilewidth](https://wp-pdf.com/docs/premium-instructions-attributes/#mobilewidth)(`
   mobilewidth="200"` or some other value).
 * Default value is `500`. You can set it globally in plugin settings, or on a per
   file basis when using a shortcode or a block.
 *  Thread Starter [roro111](https://wordpress.org/support/users/roro111/)
 * (@roro111)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18398399)
 * Ok, thanks.
 * Just changing the minimum width seemed to fix all issues.
 * RP

Viewing 7 replies - 1 through 7 (of 7 total)

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 * 7 replies
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 * Last reply from: [roro111](https://wordpress.org/support/users/roro111/)
 * Last activity: [1 year, 2 months ago](https://wordpress.org/support/topic/fullscreen-button-not-working/#post-18398399)
 * Status: resolved