How can I merge even and odd pages of a PDF?

Certainly! You can use a PDF merging tool to combine the two PDFs. There are online tools or software like Adobe Acrobat that allow you to merge PDFs easily. Just upload both files and create a single PDF with sequential pages. Hope that helps!

I have a document scanner that scans only one side, causing an issue when dealing with double-sided documents. For instance, if I have 20 double-sided pages, I can scan the odd pages (1, 3, 5, ..., 19) and then the even pages (2, 4, 6, ..., 20). Is there a fast method to merge these two PDFs into a single document with sequential page numbers (1, 2, 3, ..., 20)? Appreciate your assistance!

Exit Acrobat, and put the following in a file in your Javascripts path somewhere, e.g. C:\Program Files\Adobe\Acrobat 9.0\Acrobat\Javascripts\CollatePages.js

// Complements: Planet PDF (http://www.planetpdf.com/)

// Modified by Jeff Baitis for Acrobat 9 compatibility

// Improved Collate function with status bar.

// Add a menu item to reverse all pages in the active document

app.addMenuItem({  cName: "Reverse", cParent: "Document", cExec: "trustedReversePages();",  cEnable: "event.rc = (event.target != null);", nPos: 0 });

app.addMenuItem({  cName: "Collate", cParent: "Document", cExec: "trustedCollatePages();",  cEnable: "event.rc = (event.target != null);", nPos: 0 });

trustedReversePages = app.trustedFunction(function()

{

  app.beginPriv(); // Explicitly raise privileges

  var t = app.thermometer;

  t.duration = this.numPages;

  t.begin();

  for (i = this.numPages - 1; i >= 0; i--)

  {

    t.value = (i-this.numPages)*-1;

    this.movePage(i);

    t.text = 'Moving page ' + (i + 1);

  }

  t.end();

  app.endPriv();

})

// Collating pages

/*

  Title: Collate Document

  Purpose: User is prompted to select document to insert/collate.

  Author: Sean Stewart, ARTS PDF, www.artspdf.com

*/

trustedCollatePages = app.trustedFunction(function()

{

  app.beginPriv(); // Explicitly raise privileges

  // create an array to use as the rect parameter in the browse for field

  var arRect = new Array();

  arRect[0] = 0;

  arRect[1] = 0;

  arRect[2] = 0;

  arRect[3] = 0;

  // create a non-visible form field to use as a browse for field

  var f = this.addField("txtFilename", "text", this.numPages - 1, arRect);

  f.delay = true;

  f.fileSelect = true;

  f.delay = false;

  // user prompted to select file to collate the open document with

  app.alert("Select the PDF file to merge with")

  // open the browse for dialog

  f.browseForFileToSubmit();

  var evenDocPath = f.value;

  var q = this.numPages;

  var t = app.thermometer;

  t.duration = q;

  t.begin();

  // insert pages from selected document into open document

  for (var i = 0; i < q; i++) {

      var j = i*2;

      this.insertPages(j, evenDocPath, i);

      t.value = i;

      t.text = 'Inserting page ' + (i+1);

  }

  t.end();

  // remove unused field

  this.removeField("txtFilename");

  app.endPriv();

})

For those looking to apply this script in Adobe Acrobat X. Replace two instances of "Document" with "Edit". They are in the top lines that start with app.addMenuItem.

In the scan dialog of Acrobat you can specify double sided scanning.

I've created a (paid-for) tool that does just that. Have a look here:

http://try67.blogspot.com/2008/12/acrobat-combine-even-odd-pages.html