How Do I Resize Files?

Last Updated: Sep 04, 2018 05:49PM EDT

Sometimes files are saved way larger than we’d like and when uploaded to view online, can create pages that load slowly for users. Below are some recommendations on how to resize some common file types.


You can reduce the file size by choosing one of the following methods. It's important to double check the quality of the video after reducing the size to make sure the quality has not been degraded too much.
You can check out Wistia’s guidelines for exporting and Handbrake’s for resizing. 

Reduce the dimensions

  • 1920 x 1080 is HD
  • 1280 x 720 is smaller but still HD (great if you need to reduce the size!)
  • 640 x 480 is Standard Definition

Reduce the quality or bitrate (the lower, the smaller file size)

  • Around 20 mbps is the typical bitrate for an HD Blu-ray Video
  • Around 6 mbps is usually Standard-Definition DVD
  • Around 2 mbps is High-Quality Web Video
  • Video for phones is typically given in the kilobits (kbps)



In Preview:

File -> Export (Under Quartz Filter, select Reduced File Size)

In Adobe Acrobat:

File -> Save as Other -> Reduced File Size; OR File -> Save as (check the Reduced File Size box)


We recommend using in order to compress your PDFs.


In Preview:

Change quality: File -> Export (use the slider to lower quality); or Change Size (see image on right)

In Photoshop: 

  • File -> Save As (Choose JPEG) -> Save -> Under image options lower the quality using the slider or the dropdown list
  • File -> Export -> Export As (under file settings, lower the quality slider (As you move the slider, the estimated size will show in the left column next to the image name and size)


We recommend or's image compressor in order to compress images


Word (.docx) and PowerPoint (.pptx) Files

You can reduce the size of the images within Word or PowerPoint.

  • File -> Reduce file size…

  • Or select the image -> Format picture -> Compress


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