A 10 MB ceiling is common on contact forms, job-application portals, customer support tickets and older messaging apps.
If the form also accepts a link, uploading the full-quality file to a host and pasting the link keeps the original sharp. Use this page when an attachment is the only option. The tool aims for roughly 93 to 95 percent of the limit so the finished file does not tip over it.
Need a different ceiling? Use the related pages for other common upload caps, or the general FileHost.net Video Compressor for manual quality control.