Compress a Video for WhatsApp
The video is 240 MB, the send bar crawls to a third and stops, and WhatsApp tells you the file is too large — or worse, it goes through and arrives looking like it was filmed through a window in the rain. Either way the clip you wanted to show is not the clip that landed.
Compress the video for WhatsApp first, so the app has less left to wreck. Make the file small enough to travel, before WhatsApp makes that decision for you.
Why WhatsApp wrecks the picture
WhatsApp re-encodes almost everything that goes through a chat. It has to: a message must cross a phone network on a bad day, and a raw 4K recording is far too heavy for that.
The trouble is the order things happen in. A big file gets squeezed a long way in one violent step, and that is where the blocky sky, the smeared faces in motion and the mud in dark scenes come from. A file that is already modest gets squeezed much less, because there is much less to remove.
That is the whole trick, and it is worth saying plainly: you cannot stop WhatsApp compressing. You can arrive with a file that does not need much compressing. The picture that comes out the other end is visibly better for it, and the send does not stall.
Shrink it first
The compressor takes the file itself. Not a link, not a URL from somewhere else — the actual video off your phone or your desktop, the one sitting in your gallery or your downloads folder. Drop it in, up to a gigabyte.
Pick the WhatsApp preset. It sets the long side to 720 pixels and aims the encode at roughly fifteen megabytes, which is the size most versions of the app are happy to send without an argument. Press the button, wait while it runs, download the MP4 that comes back. Then send that one.
The other two presets cover the times that one is the wrong shape. Balanced holds the long side at 1280 and keeps noticeably more detail — the one for a recipient watching on a laptop. Smallest file goes the other way, down to 854, for a clip that has to squeeze through a weak connection and does not have to be pretty.
Nobody can promise an exact megabyte, and anyone who does is guessing. A talking head against a plain wall compresses beautifully; confetti, rain, a handheld pan through trees is new detail in every frame and it resists. When a clip cannot reach the target, the page says so rather than quietly handing back something bigger than you asked for.
Chat, Status and Document are three different things
Where you send it matters as much as what you send.
A normal chat message is the case above: your file gets re-encoded, and the smaller and calmer it arrives, the better it survives.
Status is harsher. It compresses further than a chat does and it only wants short clips, cutting anything longer into pieces. If a clip is destined for Status, send it there already small and already short, or watch it get treated twice.
Sending as a document is the quiet exception. Attach the video through the document picker rather than the gallery, and WhatsApp passes the file through untouched — no second encode, the exact bytes you made. The catch is that it arrives as a file to be tapped and opened, not a video that plays in the thread, and it counts against a different size ceiling. For a wedding clip that has to look right, that trade is usually worth it.
Cut before you squeeze
Compression works on whatever you hand it, including the parts nobody needs. Fourteen seconds of pocket at the start and a slow walk back to the phone at the end are megabytes the encoder then spends its budget on.
Trimming first is the single biggest saving available, and it costs nothing in quality — cut the ends off, then compress what is left. A ninety-second clip cut to thirty is already two thirds smaller before a single setting is touched, and the compressor can then be gentler with what remains.
Shape counts too. A wide clip sent to someone holding a phone upright shows tiny between black bars. If the subject sits in the middle of the frame anyway, crop it upright first: fewer pixels to encode and a picture that fills the screen. Both tools sit next to the compressor, and the rest of the site is written up in the blog.
FAQ
What size does WhatsApp actually allow?
It depends on the version and where you are, which is why no page can give you one honest number. The WhatsApp preset aims at about fifteen megabytes because that is the ceiling most people meet in practice.
Will the video lose quality?
Yes, some — that is what compressing is. The point is that it loses less this way than it would if WhatsApp did the whole job itself on a huge file.
Can I compress a TikTok or YouTube video with this?
Not from a link. The compressor works on a file you already have, so download the clip first, then bring the file back here.
Why is my file still too big after compressing?
Some clips cannot go lower without falling apart, and the page tells you when it has hit that floor. Trim it shorter, or try the smallest preset.
How do I send it without any compression at all?
Attach it as a document instead of from the gallery. WhatsApp passes documents through as they are, at the cost of a clip that no longer plays inline.
So: trim off what nobody needs, open the compressor, choose WhatsApp, send the file it gives you. WhatsApp will still have its say — it just will not have much left to take.