Is it possible to lock pdf with blank password?












0















I want to know if there is possibility to lock any PDF version 1.7 file with blank password using only command line approach ?



If not, then are there any GUI approaches to do the same.



Conversely, I would also like to know if there is way to supply empty password to unlock the PDF as well? Because I tried various online sites, browser based unlock, qpdf etc. But they don't provide functionality to support blank password as input.



Or unlocking/locking pdf doesn't support blank password?










share|improve this question



























    0















    I want to know if there is possibility to lock any PDF version 1.7 file with blank password using only command line approach ?



    If not, then are there any GUI approaches to do the same.



    Conversely, I would also like to know if there is way to supply empty password to unlock the PDF as well? Because I tried various online sites, browser based unlock, qpdf etc. But they don't provide functionality to support blank password as input.



    Or unlocking/locking pdf doesn't support blank password?










    share|improve this question

























      0












      0








      0








      I want to know if there is possibility to lock any PDF version 1.7 file with blank password using only command line approach ?



      If not, then are there any GUI approaches to do the same.



      Conversely, I would also like to know if there is way to supply empty password to unlock the PDF as well? Because I tried various online sites, browser based unlock, qpdf etc. But they don't provide functionality to support blank password as input.



      Or unlocking/locking pdf doesn't support blank password?










      share|improve this question














      I want to know if there is possibility to lock any PDF version 1.7 file with blank password using only command line approach ?



      If not, then are there any GUI approaches to do the same.



      Conversely, I would also like to know if there is way to supply empty password to unlock the PDF as well? Because I tried various online sites, browser based unlock, qpdf etc. But they don't provide functionality to support blank password as input.



      Or unlocking/locking pdf doesn't support blank password?







      command-line password pdf






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 3 at 14:29









      AdsheadAdshead

      11




      11






















          1 Answer
          1






          active

          oldest

          votes


















          0















          Is it possible to lock pdf with blank password?




          qpdf and it is available from the software center



          Example:



          qpdf in.pdf out.pdf --decrypt --password=''





          share|improve this answer























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "89"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1106599%2fis-it-possible-to-lock-pdf-with-blank-password%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0















            Is it possible to lock pdf with blank password?




            qpdf and it is available from the software center



            Example:



            qpdf in.pdf out.pdf --decrypt --password=''





            share|improve this answer




























              0















              Is it possible to lock pdf with blank password?




              qpdf and it is available from the software center



              Example:



              qpdf in.pdf out.pdf --decrypt --password=''





              share|improve this answer


























                0












                0








                0








                Is it possible to lock pdf with blank password?




                qpdf and it is available from the software center



                Example:



                qpdf in.pdf out.pdf --decrypt --password=''





                share|improve this answer














                Is it possible to lock pdf with blank password?




                qpdf and it is available from the software center



                Example:



                qpdf in.pdf out.pdf --decrypt --password=''






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Jan 3 at 14:46









                RinzwindRinzwind

                205k28391526




                205k28391526






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Ask Ubuntu!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1106599%2fis-it-possible-to-lock-pdf-with-blank-password%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Ellipse (mathématiques)

                    Quarter-circle Tiles

                    Mont Emei