Published zip file ballooned in size after upgrade to Storyline 360

Has anyone experience their zip file, published for LMS Scorm 1.2, growing substantially in size after updating to 360, when the .story file content has not changed?

I have a file that published to 111MB using SL2, and after updating to 360 the zip file size is now 178MB. I checked the compression settings, and they were both the same. I have also resaved the file with a new name.

Any help would be appreciated, this zip is too large to deploy on my LMS, and I can't revert to Storyline 2.



14 Replies
karen forkish

Hi Leslie!

Thank you for answering! I did not explain myself well in the original post. Here are the steps I followed.

Open file in Storyline 2, and publish to LMS.

Resulting zip file size is 111MB.

Close file, and reopen as Storyline 360.

Check quality settings to be sure they are the same. They are.

Publish to LMS.

Resulting zip file size is 178MB.

Do you know what would make a file published from Storyline 360, 67MB larger than the exact same file published in Storyline 2? 

Thanks so much for any insight you might have about this!


Joe Tansengco

Hi Antje,

Sorry to hear that you ran into this issue. We are currently tracking incidents where published Storyline courses are increasing in file size. We are seeing this occur in recent releases of the application. I’ve added this forum post to the report we have open for it so we can notify you as soon as a fix is released.

As a workaround, you might consider downgrading your Storyline 360 installation to Update 62 so you can publish courses with smaller file sizes.

Marty Slapnik

I believe I see where the filesize bloat is coming from. I grabbed files from my same course that I exported a few weeks ago and compared the same jpg's and png's to what is being exported from the course today. The NEW image files look like they're being exported at their original size and not being scaled down appropriately. Thus, making all of the images files much larger than needed. 

This is big. I have clients that can't install these courses in their LMS now that the zip files are so huge. When can we get an update on this?

Joe Tansengco

Hi Marty,

As mentioned in my previous post, we're currently monitoring this file size issue that was caused by a recently released update that aimed to address image quality. The update I am referring to is Update 63, and as a temporary workaround, you can downgrade your installation to Update 62

We'll let everyone in this forum know once this issue is fixed, and for your reference, here's a quick look at how we tackle bugs