MP4 Compressor

Upload an MP4, get a smaller file back. Free to try, no software to install.

Upload a video to get started.

MP4, MOV, WEBM, MKV, AVI, FLV, MTS, 3GP

Or paste a video link

YouTube, TikTok, Instagram, Vimeo, Google Drive, Dropbox, direct links

Recordings are encrypted in transit and at rest and are not used to train AI models. Privacy · Security

Compress an MP4 File Online

A smaller file uploads faster, fits under an email or chat attachment limit, and takes up less space in a shared drive. Upload the MP4 and download the compressed result when the tool finishes.

What you get:

  • A smaller MP4 file you download directly, with no ScreenApp watermark added
  • No software to install; a free ScreenApp account (Yes, free (no card))
  • Works from a browser on a phone, tablet, or computer

How to Compress an MP4

  1. Upload your file: Drag and drop your MP4, or choose it from your device.
  2. Wait for processing: The tool uploads the file and runs compression on it.
  3. Download the result: Preview the file size before and after, then download the compressed MP4.

How much a file shrinks depends on its content: an MP4 of mostly static slides or a talking head compresses further than fast-motion footage. See how we measure accuracy for how ScreenApp evaluates its tools generally.

MP4 Compressor vs Other Apps

FeatureScreenAppFreeConvertClideoVEED
Free file size limit2 GB in the free online tool, no set limit in the app1 GB500 MB1 GB
Watermark on freeNoNot statedYesYes
Paid plan$19/month annual$12.99/monthNot statedNot stated

Sources, checked 2026-09-15: ScreenApp pricing, freeconvert.com/webm-to-mp4, clideo.com/compress-video, veed.io/tools/video-compressor, freeconvert.com/pricing

Who Compresses MP4 Files

Content creators shrink a raw MP4 export before uploading it to a platform with a smaller upload cap.

Marketing teams compress a promotional MP4 so it attaches to an email instead of needing a file-transfer link.

Educators compress a recorded class or presentation MP4 so students on slower connections can download it without a long wait.

Software developers shrink bug report recordings and screen captures so they fit under an issue tracker’s attachment limit.

Remote workers compress a video proposal or client presentation MP4 before sending it by email or chat.

FAQ

How do I compress an MP4 file online for free?

Files are processed in the cloud. A free account is required to use and save results in the app. File downloads require a paid plan.

Does compressing an MP4 reduce its quality?

Compression removes redundant data from each frame, so there is some quality tradeoff for a smaller file. How noticeable it is depends on the source footage.

Is there a file size limit?

The free online tool on this page takes files up to 2 GB. Uploads in the ScreenApp app, on any plan, have no set file size limit; see pricing for the plans.

Does ScreenApp's MP4 compressor add a watermark?

Can I compress an MP4 on my phone?

Yes. The tool runs in a mobile browser, so you can upload and download a compressed MP4 from a phone or tablet without installing an app.

What other video formats can I compress?

MOV, AVI, and WebM, in addition to MP4. Upload the file and the tool handles the rest.

Can I compress just the audio inside an MP4?

The compressor re-encodes the whole file, video and audio together. To pull the sound out as a standalone file instead of compressing the MP4, use the extract audio from video tool.

How is this different from HandBrake or VLC?

HandBrake and VLC are desktop software you install and configure manually. ScreenApp's compressor runs in the browser, so there is nothing to download.

Real Results from Real Users

works like a charm, notes have been super helpful alongside chat function. loveeeee
KS
Katharine Suy
Chrome Web Store, October 17, 2024
nice app for important summary
S
SAHIL
Google Play, January 30, 2026

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