See why your PPTX file didn’t reduce (macOS)
Most likely it will contain media that NXPowerLite cannot/didn’t compress, already be optimal or quite small. Below we’ve provided instructions for helping you to find the culprit and some options for fixing it.
Is it already small?
Sizes are listed in KB in NXPowerLite, anything below 1,000 KB (1 MB) is pretty small and should be easily transferred by email. Most email caps have risen to 5 - 10 MB even in restricted scenarios, although there are still some areas where the limits are much tighter.
Optimize profile
If you are using the Balanced Optimize profile, then consider trying again with Strong as there are some additional settings in there that are designed to cut even more weight from your files. You can also configure custom profiles with stronger compression settings. Read How do 'Optimize profile' (optimization) settings affect my files? to find out how.
Is it still too large for your needs?
First, you need to find out what content is making your file big by looking at a breakdown of content inside a file. Unlike Windows, macOS doesn’t have many app or tool options in this regard, but the next section explains a method we like to use to see inside your PPTX file.
How to look inside PPTX files with BetterZip Quick Look
We’ve taken a look at many archive apps for macOS and have found a free Quick Look extension that enables you to see the breakdown of the content within a PowerPoint file. To prepare your macOS for seeing your PPTX content, follow our easy 3-step guide to installing the BetterZip Quick Look extension.
Once BetterZip Quick Look extension is working take a copy of your PPTX file and rename the file adding ‘.zip’. Now select the file in Finder and press the spacebar to start Quick Look.
You will see a folder treeview, where you can browse through the folders to see where the large content is lurking. The folders are named for the content they contain.
In the above example, the bulk of the size is located in the embeddings folder which contains embedded objects.
Jump into a folder to see what individual files are causing the size problem and follow the instructions below to compress what you find.
How to manually compress large media
Once you’ve established exactly what content you still need to reduce inside your file, the links below will take you to our latest advice for fixing each type of media.
Images
We know that EMF files often don’t compress, and images with artistic effects will appear as WDP files. There are instructions for compressing WDP and EMF images here.
Fonts
Click to open our instructions for reducing font file sizes in PowerPoint.
Embeddings
If the files inside the embeddings folder are XLSX, then there’s a chance they are connected to charts in your presentation. In this case, you can switch to the Strong Optimize profile in NXPowerLite and this should compress them automatically. Alternatively, create a custom profile and make sure you enable the Remove embedded Excel data from charts setting.
Click here for further instructions for reducing the size of embedded objects in your PowerPoint presentation.
Audio or video
Read our instructions for how to compress audio and video in PowerPoint.
We love hearing about content that is causing size issues in PowerPoint and we might be able to help. So if you come across anything in a presentation that is making it too big and you can’t fix it - then please contact us.