Why videos get so big
Phones and screen recorders prioritise capture speed over efficiency, so they write video at very high bitrates — a minute of 1080p can be 100–200MB, and 4K far more. That fills your storage, stalls uploads, and bounces off every sharing limit. Most of those bits are redundant: a smarter re-encode can throw away what your eyes won’t miss.
Mynify re-encodes the video on your own device with an efficient H.264 setting, so you get a much smaller file that still looks good — without uploading a thing.
Pick your balance
This page starts on the Balanced setting — the everyday sweet spot between size and sharpness. Prefer a different trade-off? Switch to High quality to keep maximum detail, or Super small to squeeze hardest. Each preset shows its estimated output size instantly, so you can compare before compressing. You can also re-run a different setting on the same video without re-selecting the file.
On Chrome, Edge and Android, Mynify uses your device’s hardware video encoder for near-instant results; Safari and Firefox get a slower but dependable fallback automatically. Either way, the output is a universally-playable MP4.
When to use which
- Archiving footage you want to keep? High quality — small savings, best fidelity.
- Freeing up phone storage or sharing generally? Balanced does the job.
- Fitting a strict limit? Try Super small, or use our dedicated Discord and WhatsApp presets that target those exact caps.
Does compressing lose quality every time?
Video compression is lossy, so re-compressing an already-compressed file repeatedly will slowly soften it — like photocopying a photocopy. The practical advice: compress from the original whenever you can, and do it once at the setting you need, rather than shrinking a file that’s already been shrunk. If you’re experimenting, keep the source and re-run different presets on it (Mynify lets you try another setting on the same file without re-selecting it), instead of compressing the output again and again.
No signup, no watermark, no limits — and because everything is processed locally, your footage never leaves your device.