Armalytix attempts to compress files before uploading but there is a file size limit of around 20mb after compression, and notably we have seen that pdfs do not compress very much.
If you're trying to upload a file that's too big, we suggest one of the following:
pdf:
Split the file up into separate files of a few pages each, and then multi-select the separate files before uploading.
Mac:
Open the file in Preview
If thumbnails are not shown on the left hit View/Thumbnails
Hit File/Duplicate
Delete some thumbnails
Hit File/Save... and save the file
Repeat steps 1-5 as necessary
Windows:
open the PDF file (for example, in Microsoft Edge, or Adobe Reader).
Go to File > Print, then select the "Microsoft Print to PDF" printer.
Choose the pages you would like to split from the original PDF, enter this in the Page Range you would like to print, and then press Print.
Choose the location where to save the new PDF with just the selected pages.
Repeat steps 1-4 as necessary
png, jpg and jpeg:
To reduce the file size, follow the following steps:
Mac:
Open the file in Preview
Hit Tools/Adjust Size
Ensure "Scale Proportionally" is checked
Reduce the height or width
Hit File/Save
Windows:
The steps to take on Windows are different depending on the version of Windows that you are running. This Microsoft link outlines the different steps to follow.