Compress a video for WhatsApp
WhatsApp compresses videos you send as media, often more heavily than you would like. Compressing to a sensible size first means a faster send on mobile data and control over how the result looks. Send it as a document if you want WhatsApp to leave it untouched.
MP4, MOV or M4V. Free up to 100 MB. Your video stays on your device.
Size limits
| Fast to send on mobile data | Around 16 MB |
|---|---|
| Good quality for a short clip | 30 to 64 MB |
How it works
- Choose a video. It stays on your device.
- Pick the size you need. Altols works out the bitrate and resolution that fit.
- Your browser re-encodes the picture as H.264 and copies the sound across untouched.
- Download the MP4.
Frequently asked questions
How do I stop WhatsApp compressing my video?
Send it as a document instead of from the gallery. The recipient gets the exact file, which is why compressing it to a reasonable size first is worth doing.
Will it play on iPhone and Android?
Yes. Altols outputs a standard MP4 that both play natively.
Is my video uploaded anywhere?
No. Altols uses your browser's built-in video encoder, so the video is processed on your device and never leaves it.
Is there a size limit?
Free compression works on videos up to 100 MB. For larger videos, up to 1 GB, a 24-hour pass costs $2.99 USD.