Skip to main content
OCLC Support

How do I use MarcEdit to split a large MARC file into smaller files

  • Files of MARC records are too large to easily manipulate
Applies to
  • WorldCat Collection Manager
  • MarcEdit
  1. MarcEdit is a free, downloadable utility.  We recommend using the most recent version.  To download MarcEdit or upgrade to the newest version, click  MarcEdit  
  2. Once you have MarcEdit installed, go to your WorldShare> Collection Manager>My Files>Downloads page.  
  3. Download your desired set of MARC records by clicking the download button.
  4. Find the file in your downloads folder or wherever you saved it. Double click to open in MarcEdit. 
  5. The MarcTools window will then either pop open, or you’ll need to open your MARC file in MarcEdit> MarcTools 
  6. When your MARC record file is open in MarcTools
    1. Select and copy the string shown in the “Input File” box 
    2. Select “MarcSplit” from the “Tools” menu in the MarcTools window 


  1. Click in the “Source File” box and paste the string you copied in step 5.1 
  2. Click on the folder icon to the right of the “Destination Folder” box, pick a place to put the split MARC record files 
  3. Fill in the “Records Per File” box (maybe try 5000, you do not have to check the box number of files unless you would like to have a specific number of files created) 
  4. Click the “Process” button
  5. Once this completes and it reports how many files it created, click the “Close” button
  6. That's it!  Go to the destination folder and find your split MARC record files 

Additional information

MarcEdit is a free utility, not owned by OCLC. It is available for download.

Page ID