Is there a size limit for my slides? Dan September 25, 2019 08:40 Updated Follow For Pro webinars, the size limit for slides is 100 MB. Related articles What are the recommended slide & thumbnail dimensions in Pro Webinar? Salesforce AppExchange Connector: How to Run a Historical Sync In which format should I provide the video? Can I upload my slides at any time? How do I upload a video? Comments 0 comments Please sign in to leave a comment.