Layer has recently expanded its limits to now support models up to 5 GB.
If your model is still too large, there are a few things you can do to greatly reduce the size of your model:
Purge your model before uploading to Layer
Purging your model is the best and most effective way to reduce it's file-size. Purging removes any un-used families, views, and other content from your model. You can find instructions for how to purge your model here →
Convert imported CAD or Image files to Links
Instead of importing your CAD or images directly into your model (making them a part of your model, and adding to it's size) consider linking them instead. This way the files are stored externally, instead of being stored within the Revit file.
Deleted un-used or redundant Views & Sheets
Views and sheets both take up room in your model. Remove any un-used or redundant views from your model to reduce the size of your model file.
Do you have overly complex families? Simplify them
Complex or highly-detailed model families can quickly weigh down your model. Consider replacing highly-detailed model families with simpler ones if their complexity is not necessary.
Tried everything above? Contact us, and we can help.