Pdf.js: Is it possible to prevent from copying text selection?

[sebDK]

Hi,

I would like to know if it is possible to prevent user from copying selected text into the PDF?

Thanks for your help.

S.

[timvandermeij]

You can disable text layer rendering by setting e.g., https://github.com/mozilla/pdf.js/blob/master/web/default_preferences.json#L12 to true.

[sebDK]

Thank you @timvandermeij. It is working.
I cannot find the option to unactivate print and download functions.
Is there a clean way to do it or do I need to comment out the HTML code?

Thanks for your help.

[timvandermeij]

There is no option for that in the default viewer, so you'll have to implement that yourself.

[sebDK]

@timvandermeij thank you for your answer.

[sebDK]

@timvandermeij disabling text layer rendering is a good workaround to prevent from copying text but unfortunately the search function loses the highlight feature. Is there an other workaround where I can prevent from copying selected text but still able to highlight searchs into PDF?

Thanks for your help.

S.

[timvandermeij]

No, the search function directly depends on the text layer.

[yurydelendik]

See if https://developer.mozilla.org/en-US/docs/Web/Events/copy will help

[sielay]

Why not disable selection of text layer from CSS?

.textLayer {
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Safari */
   -khtml-user-select: none; /* Konqueror HTML */
     -moz-user-select: none; /* Firefox */
      -ms-user-select: none; /* Internet Explorer/Edge */
          user-select: none; /* Non-prefixed version, currently
                                supported by Chrome and Opera */
}

of course, it's not bulletproof, but the web isn't in the end, is it? ;)

And keeps search working

[sebDK]

Thanks @sielay, it is what I have done.

[lmi83]

for the question: I cannot find the option to unactivate print and download functions.
you can try this

<script type="text/javascript"> document.getElementById("secondaryOpenFile").style.display = "none"; document.getElementById("openFile").style.display = "none"; document.getElementById("secondaryPrint").style.display = "none"; document.getElementById("print").style.display = "none"; document.getElementById("secondaryDownload").style.display = "none"; document.getElementById("download").style.display = "none"; </script>

in your viewer.html file