When you are setting up a Turnitin assignment for students, bear in mind the file size limit is 40MB for the submitted piece of work. Anything above this will be rejected by Turnitin.

Large file sizes (above 40MB) typically occur when you bring large pictures – photographs, diagrams, scanned images etc. – into Word/PowerPoint. The pictures might then be cropped or resized in Word/PowerPoint so that they appear, visually, smaller, however Word retains the full-size picture data in the background.

If your assignment requires students to submit a Microsoft Word or PowerPoint file and the files contain a number of images, we recommend the student makes a copy of the original file and then follows the process below to significantly reduce the file size on the copied document. Working on a copy will ensure that the student retains the original – large /  uncompressed – file.

The following applies to Microsoft Word/PowerPoint 2013

1. Open the Word document
2. Left click on one of the images and you’ll see the Picture Tool tab appear as shown here


3. Click on Compress Pictures

Compress Picture

4. See suggested settings on the screenshot above. If the document is to be printed-out, you may wish to select “Print”.

5.Click on OK

Important: Compressing a picture to reduce the size of the file changes the amount of detail retained in the source picture. This means that after compression, the picture can look different than before it was compressed. Because of this, you should compress the picture and save the file before applying an artistic effect. You can change or undo the compression even after saving the file, as long as you have not closed the program you are working in.

For more information, please visit the Microsoft support page here.