The big change in PowerPoint 2007 was that the stable binary file format of 97-2003 (.ppt files) was replaced as the default by a new zipped XML-based Office Open XML format (.pptx files). Under the General tab, towards the bottom you will see "Unblock" button or checkbox next to "Security: This file came from another computer and might be blocked to help protect this computer". To unblock a file on Windows, right click on the file and open "Properties".
#Compress powerpoint for mac software#
You may need to unblock the PowerPoint files if your Microsoft PowerPoint software can't open them. The output files will be automatically deleted on our server in two hours, so please download it to your computer or save it to online storage services such as Google Drive or Dropbox as soon as possible. You can right-click on file name and click "Save link as." to save the file.
#Compress powerpoint for mac zip#
To compress all output files in a ZIP file, click " " icon on the right, then click "Add to ZIP". The output files will be listed in the "Output Files" section. Please be patient while files are uploading or compressing. The batch compression automatically starts when files are uploaded. Each PowerPoint file size can be up to 40 MB. The settings are optional, you can close "Settings" section by clicking the "X" on the right.ĭrag multiple PowerPoint files to the "Choose Files" section.
Image quality value can be 1 (lowest image quality and highest compression) to 100 (best quality but least effective compression).
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