sizefit

Make any video or image fit where you are sending it.

Pick the app, drop the file, download a copy that is under the limit. Free, no sign-up, and the file never leaves your device.

  • Nothing is uploaded. Your browser does the compression, so the file stays on your device.
  • Lands under the real limit. We aim a little below it, so the upload goes through first time.
  • Fast. A 30 second 1080p clip fits into 10 MB in about two seconds on a desktop.
Where are you sending it?

Limit 20.00 MB. We aim for 19.00 MB, 1.00 MB of safety margin. Source, checked November 2026. Discord says 20 MB since August 2026. If your app still rejects it, use the 10 MB preset.

Sent to our servers: 0 bytes. It all happens in this tab.

Three steps, no waiting in a queue

Online compressors upload your file, process it on their server and send it back. Here the work happens right in your browser.

  1. 1

    Say where it is going

    Discord, WhatsApp, Gmail and more, or type an exact size like 3 MB.

  2. 2

    Drop in the file

    Videos and images both work. Nothing is sent to us, so there is no upload to wait for.

  3. 3

    Download the small copy

    It is checked against the limit with a safety margin before you see it.

Pick where you are sending it

Each page knows that app's current limit and links the official source.

All sizes and fixes

Video

Image

Fix a specific error

How it compares

Most free compressors work by uploading. That is slow for big files, and your video sits on someone else's server.

SizefitTypical online compressor
Your file is uploadedNo, neverYes
Waiting for upload and queueNoneMinutes for big files
Account or email neededNoOften, for bigger files
WatermarkNeverSometimes on free plans
Knows each app's limitYes, with sourcesYou work it out

Questions people ask

Is it really free?

Yes. The site is supported by ads, there are no accounts, watermarks or limits on how many files you compress.

Do you upload my file?

No. Compression happens in your browser. After the page has loaded you could switch off your internet and it would still work, except for a one-time download of a compatibility encoder that a few browsers need.

What formats can I use?

Videos such as MP4, MOV, WebM and MKV, and images such as JPEG, PNG and WebP. Videos come out as MP4 where your browser can write it, otherwise WebM.

Why is the result sometimes smaller than the limit by a lot?

We leave a safety margin so the file is not rejected for a few kilobytes. Short clips and simple images can also come out well below the target because they do not need more.