100% private · nothing uploaded
Compress Video for WhatsApp
WhatsApp limits videos to about 16 MB when sending, so longer or higher-quality clips won’t go through. Slimcast compresses your video to fit, privately, in your browser.
WhatsApp send limit: ~16 MB No upload, fully private Free, no watermark
Frequently asked
WhatsApp compression, answered
Why won’t my video send on WhatsApp?
WhatsApp caps sent videos around 16 MB. Compress below that and it’ll go through.
Does this work on my phone?
It works in mobile browsers for shorter clips, but large files compress more reliably on a desktop.
Is it private?
Yes — everything runs locally in your browser. No uploads.