topic Re: Screen Grab Document Extension for Printing Extensions in QlikView

Screen Grab Document Extension for Printing Extensions

Brian_Munz — Mon, 26 Jan 2026 16:26:21 GMT

So, I'm not completely sure why this is needed, but I've had a lot of people for a long time ask me if it was possible to print extensions. As you probably know, you can't print them using the standard way offered by QlikView because they're dynamic javascript.

The other day I came across a JS library called html2canvas which scans the DOM of the page and recreates (as best it can) the HTML of that page on a <canvas> element. So I played with it a bit and made it so it would also convert that canvas element to a PNG image that you can download and do whatever you want with (print,etc.). It works with extensions, BUT in no way is this library perfect.

Since html2canvas uses the <canvas> element, you'll need to be running IE9 or above. The library does what it can to convert the HTML to a canvas but it's a pretty new library and there's some things too complex for it. For example, none of my Raphael extensions were showing up in the screen captures I created from this extension, and I guess a few people were having problems with the background image of the QVW showing up. Like I said, this is what it is, and it's far from perfect, but hopefully it helps.

Anyway, it's pretty easy to use. Once you install the doc extension, there will be an icon in the upper right of the QVW (in webview) next to the "+" sign:

Click that and a window will pop up underneath it showing you a preview thumbnail of the screen capture and giving you instructions on how to download the image:

Obviously telling people to hold down ctrl and shift then right clicking the thumbnail isn't ideal, but it was really the only way to do it. It's pretty easy, just hit Save Picture As...

When you open the image you downloaded, it will be a screen capture of what you were just seeing in the QVW similar to this:

That's it. Like I said, it's not perfect, but hopefully it helps out.

The extension is now stored on GitHub. Click on the "Download ZIP" button for the files.

Feel free to add any updates or improvements!

brianwmunz/screenShot-QV11 · GitHub

Message was edited by: Brian Munz

Re: Screen Grab Document Extension for Printing Extensions

Tue, 16 Oct 2012 08:46:51 GMT

Hi Brian,

I have installed the extension, but the icon next to the "+" sign (in webview) doesn't appear.

Is it my fault? Sorry but I'm new in the world of extensions.

Massimiliano

Re: Screen Grab Document Extension for Printing Extensions

thomas_skariah — Tue, 16 Oct 2012 08:54:42 GMT

Hi Massimiliano,

From where we can get the installation setup?

Regards,

Tom

Re: Screen Grab Document Extension for Printing Extensions

Tue, 16 Oct 2012 10:01:44 GMT

Hi Tom,

I installed only the screenshot.qar file attached to the article...

Re: Screen Grab Document Extension for Printing Extensions

Brian_Munz — Tue, 16 Oct 2012 14:23:09 GMT

Does it show up on the sheet itself below the grey bar?

Re: Screen Grab Document Extension for Printing Extensions

Tue, 16 Oct 2012 14:46:32 GMT

No, the icon ( ) doesn't appear on the sheet.

This is my Qlikview screenshot:

Regards,

Massimiliano

Re: Screen Grab Document Extension for Printing Extensions

thomas_skariah — Wed, 17 Oct 2012 01:15:59 GMT

Hi Massimiliano,

If Possible can you forward that application.

Regards,

Tom

Re: Screen Grab Document Extension for Printing Extensions

Fri, 19 Oct 2012 16:11:45 GMT

Hi all,

it was my fault, the extension run very well!

Sorry, great job Brian!

Regards,

Massimiliano

Re: Screen Grab Document Extension for Printing Extensions

Mon, 22 Oct 2012 08:59:46 GMT

Hi Brian,

this extension is very nice, but I would print a single extension object, is it possible?

Thanks for sharing your experience!!

Regards,

Massimiliano

Re: Screen Grab Document Extension for Printing Extensions

amien — Mon, 12 Nov 2012 19:46:27 GMT

@Massimiliano

what did you change? i don't get the extension icon neither in webview

EDIT1 .. ofcourse .. need to activate the exprenssion .. but now i get a script error :

http://qlikview/QvAjaxZfc/QvsViewClient.aspx?public=only&type=document&name=Extensions/screenshot/script.js

EDIT2 : got it working. Was using IE8 instead of IE9. Great Extension!

Re: Screen Grab Document Extension for Printing Extensions

Brian_Munz — Wed, 21 Nov 2012 15:48:44 GMT

TO have the extension target a specific object wouldn't be too difficult. I can try to modify this extension to do that when I get some free time.

Re: Screen Grab Document Extension for Printing Extensions

Thu, 22 Nov 2012 10:52:06 GMT

It would be great!

Re: Screen Grab Document Extension for Printing Extensions

amien — Sun, 25 Nov 2012 00:25:18 GMT

Brian,

Just investigating the possibilities.

Would it be technically possible to, right after you click on the icon, not show the thumbmail, but go directly to one of the opties? like printing for example. So : Click icon --> Capture image --> print dialog

Re: Screen Grab Document Extension for Printing Extensions

rbecher — Mon, 25 Mar 2013 20:20:31 GMT

Hi Brain,

I tried to change it to capture only $("#MainContainer") but doesn't work as an element parameter. Now I do some hides before the screenshot instead to have a proper sheet image w/o Ajax Bar, Tabrow and the screenshot icon itself:

$("#QvAjaxToolbar").hide();

$("#Tabrow").hide();

$("#sshot").hide();

Maybe someone finds this helpful...

- Ralf

Re: Screen Grab Document Extension for Printing Extensions

rbecher — Tue, 26 Mar 2013 20:22:10 GMT

Small change in html2canvas.js line 1908 because it was not working if search box exists on sheet.

Btw. I've developed a new version where the screenshot opens in separate browser window to have more control of preview and better usabilty with context menu. Let me know if someone is interested because we can custimize it..

- Ralf

Re: Screen Grab Document Extension for Printing Extensions

sadickbasha — Tue, 21 May 2013 06:29:14 GMT

Hi Ralf Becher,

I have installed Screenshot.qar, but unable to find the icon . Provided below my QV screenprint. I am using IE9

please guide me if any other settings to be changed.

Thanks
Sadick

Re: Screen Grab Document Extension for Printing Extensions

rbecher — Tue, 21 May 2013 09:25:23 GMT

Hi Sadick,

it is a document extension. Did you added it via Settings/Document Properties/Extensions?

- Ralf

Re: Screen Grab Document Extension for Printing Extensions

sadickbasha — Tue, 21 May 2013 12:16:03 GMT

Initially I tried with usual extension installation option. Now I have added as Document extension as per the steps mentioned above and it works perfect.

Thanks

Sadick

Re: Screen Grab Document Extension for Printing Extensions

Nicole-Smith — Fri, 06 Dec 2013 14:58:12 GMT

I've made some updates to this extension for when it is used in an IFrame.

Details can be found here: Updated/Edited Screen Grab Document Extension

Re: Screen Grab Document Extension for Printing Extensions

Brian_Munz — Fri, 06 Dec 2013 18:40:53 GMT

I've taken the newest version of this extension (with improvements by Ralf Becher and Nicole Smith) and posted it on github in order to have a central location for future updates and improvements.

Feel free to make your own changes and check them into the repo.

Thanks!

brianwmunz/screenShot-QV11 · GitHub