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Forum Update on Monday, May 27th 2025

Qt pdf reader

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  • M Offline
    M Offline
    mrdebug
    wrote on 31 Jul 2020, 08:02 last edited by
    #1

    Hi, I need to extract the pages from a pdf document and store them in png files.
    Can someone suggest me the easy way to do this?
    Which is the most easy, free and portable library (Windows, Linux, mac) to use?

    Need programmers to hire?
    www.labcsp.com
    www.denisgottardello.it
    GMT+1
    Skype: mrdebug

    1 Reply Last reply
    0
    • S Offline
      S Offline
      sierdzio
      Moderators
      wrote on 31 Jul 2020, 08:15 last edited by
      #2

      You can use QtPdf, it's an official module now.

      Other popular library is poppler.

      (Z(:^

      J 1 Reply Last reply 31 Jul 2020, 08:33
      3
      • S sierdzio
        31 Jul 2020, 08:15

        You can use QtPdf, it's an official module now.

        Other popular library is poppler.

        J Online
        J Online
        J.Hilk
        Moderators
        wrote on 31 Jul 2020, 08:33 last edited by
        #3

        @mrdebug said in Qt pdf reader:

        Which is the most easy, free

        @sierdzio said in Qt pdf reader:

        You can use QtPdf, it's an official module now.

        sadly not free, but a ridiculous 50$ a year.
        https://marketplace.qt.io/collections/most-popular/products/qtpdf


        Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


        Q: What's that?
        A: It's blue light.
        Q: What does it do?
        A: It turns blue.

        S 1 Reply Last reply 31 Jul 2020, 08:47
        1
        • J J.Hilk
          31 Jul 2020, 08:33

          @mrdebug said in Qt pdf reader:

          Which is the most easy, free

          @sierdzio said in Qt pdf reader:

          You can use QtPdf, it's an official module now.

          sadly not free, but a ridiculous 50$ a year.
          https://marketplace.qt.io/collections/most-popular/products/qtpdf

          S Offline
          S Offline
          sierdzio
          Moderators
          wrote on 31 Jul 2020, 08:47 last edited by
          #4

          @J-Hilk said in Qt pdf reader:

          @mrdebug said in Qt pdf reader:

          Which is the most easy, free

          @sierdzio said in Qt pdf reader:

          You can use QtPdf, it's an official module now.

          sadly not free, but a ridiculous 50$ a year.
          https://marketplace.qt.io/collections/most-popular/products/qtpdf

          But it has free option: under GPL.

          (Z(:^

          J P 2 Replies Last reply 31 Jul 2020, 08:50
          2
          • S sierdzio
            31 Jul 2020, 08:47

            @J-Hilk said in Qt pdf reader:

            @mrdebug said in Qt pdf reader:

            Which is the most easy, free

            @sierdzio said in Qt pdf reader:

            You can use QtPdf, it's an official module now.

            sadly not free, but a ridiculous 50$ a year.
            https://marketplace.qt.io/collections/most-popular/products/qtpdf

            But it has free option: under GPL.

            J Online
            J Online
            J.Hilk
            Moderators
            wrote on 31 Jul 2020, 08:50 last edited by
            #5

            @sierdzio you're right!

            the marketplace also has a description on how to build it 🤔
            It's part of the source code of qtwebengine oO


            Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


            Q: What's that?
            A: It's blue light.
            Q: What does it do?
            A: It turns blue.

            1 Reply Last reply
            2
            • M Offline
              M Offline
              mrdebug
              wrote on 11 Aug 2020, 20:27 last edited by
              #6

              Many thanks for the replies.
              After a first check, poppler seems to be not so fast to build in Windows, Mac, Linux.
              An already builded version for Windows exists but it is not updated.
              I don't want to buy the non free library because I need to manage pdf in a non commercial software.
              The only thing that I need is to extract from the pdf each page as png image.
              Is there somethin else as free library?

              Need programmers to hire?
              www.labcsp.com
              www.denisgottardello.it
              GMT+1
              Skype: mrdebug

              1 Reply Last reply
              0
              • S sierdzio
                31 Jul 2020, 08:47

                @J-Hilk said in Qt pdf reader:

                @mrdebug said in Qt pdf reader:

                Which is the most easy, free

                @sierdzio said in Qt pdf reader:

                You can use QtPdf, it's an official module now.

                sadly not free, but a ridiculous 50$ a year.
                https://marketplace.qt.io/collections/most-popular/products/qtpdf

                But it has free option: under GPL.

                P Offline
                P Offline
                Pablo J. Rogina
                wrote on 11 Aug 2020, 20:48 last edited by
                #7

                @sierdzio said in Qt pdf reader:

                But it has free option: under GPL.

                It seems it has another free option: LGPL

                Licenses:

                GPLv2

                LGPLv3

                Qt Commercial License

                Qt Marketplace LA

                @mrdebug

                After a first check, poppler seems to be not so fast to build in Windows, Mac, Linux.

                How many times are you going to build/rebuild the library?
                I expect once per OS, so is that build time a big deal?
                Once you're done, you'll use your own binaries

                Upvote the answer(s) that helped you solve the issue
                Use "Topic Tools" button to mark your post as Solved
                Add screenshots via postimage.org
                Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

                1 Reply Last reply
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