Video and file size limits on popular platforms

The limits SelfKit compresses to, in one place. Platforms change their rules from time to time — we review this table regularly.

Platform	Plan	Limit	We compress to	Compress
Messengers
Discord	Free	20 MB	≈ 20 MB	Compress
Discord	Nitro Basic	50 MB	≈ 50 MB	Compress
Discord	Nitro	500 MB	≈ 500 MB	Compress
WhatsApp	As video	16 MB	≈ 16 MB	Compress
WhatsApp	As file	2 GB	≈ 2 GB	Compress
Telegram	Free	2 GB	≈ 2 GB	Compress
Telegram	Premium	4 GB	≈ 4 GB	Compress
Signal	All accounts	100 MB	≈ 100 MB	Compress
Messenger	All accounts	25 MB	≈ 25 MB	Compress
Viber	All accounts	200 MB	≈ 200 MB	Compress
LINE	All accounts	1 GB	≈ 1 GB	Compress
Email
Gmail	All accounts	25 MB	≈ 18.2 MB	Compress
Outlook	All accounts	20 MB	≈ 14.6 MB	Compress
Yahoo Mail	All accounts	25 MB	≈ 18.2 MB	Compress
iCloud Mail	All accounts	20 MB	≈ 14.6 MB	Compress
Yandex Mail	All accounts	25 MB	≈ 18.2 MB	Compress
Mail.ru	All accounts	25 MB	≈ 18.2 MB	Compress
Social networks
X (Twitter)	Free	512 MB	≈ 512 MB	Compress
Bluesky	All accounts	300 MB	≈ 300 MB	Compress
Reddit	All accounts	1 GB	≈ 1 GB	Compress
Mastodon	All accounts	99 MB	≈ 99 MB	Compress
Work & dev
Slack	All accounts	1 GB	≈ 1 GB	Compress
GitHub	Free	10 MB	≈ 10 MB	Compress
GitHub	Paid plan	100 MB	≈ 100 MB	Compress
Notion	Free	5 MB	≈ 5 MB	Compress
Notion	Paid plan	5 GB	≈ 5 GB	Compress
Trello	Free	10 MB	≈ 10 MB	Compress
Trello	Paid plan	250 MB	≈ 250 MB	Compress

MB, MiB and why we keep a margin

Platforms usually mean decimal megabytes (1 MB = 1,000,000 bytes), while some computers show binary mebibytes (1 MiB = 1,048,576 bytes). We always use the stricter reading and leave a small margin, so the file is accepted either way.