MP4 Compressor

Easily compress MP4 videos without downloading or installing any software

Compress MP4 online

Make your MP4 files smaller with just a few clicks directly in your browser. With smaller files it will be easier for you to share and store them for a longer period of time without a big impact on your storage.

MP4 Compressor

Reduce MP4 size

With Flixier you can reduce the file size of your MP4 files without downloading or installing any software. Just import your MP4 file, tweak a few settings for compression, press the Compress button and your file will be compressed at very fast speeds.

Compress MP4 online

Flixier lets you compress MP4 files online, directly in your browser. In this way you avoid wasted time on downloads or installs and you also save space on your computer. Another advantage is that you can compress files on any device just by opening up your browser.

Easily make MP4 files smaller

Ease of use is our priority and our compressor is as easy to use as it can get. After you add your file you can choose the compression settings. Our sliders will let you choose between preserving quality or reducing file size as much as possible.

Fast MP4 compressor

Because our compressor is cloud powered it means that it runs super fast on any computer. You can run it on anything from low powered PCs and laptops to Chromebooks or Macbooks and the performance will always be the same.

How to compress MP4 online

How to compress MP4 online
Add your MP4 files to the compressor

First add an MP4 video to Flixier, to do so click on the “Upload video” button and then browse your computer for the file you want to import and select it.

Select the compression settings

Now choose the compression settings that are right for you. You can decrease the bitrate of a video, the framerate or the resolution. When making these changes you will also be able to see an Estimated Compressed file size.

Download the video

Now that you chose the right settings for your video compression click the “Compress video” button. Your file will be processed by our powerful servers and be ready in minutes.

Why use Flixier to compress MP4 online

Real-time file size saving indicator

Our compressor lets you easily understand how much you need to compress a file. Just drag the compression settings sliders and you will be able to see a real-time file size compression number.

Edit your MP4 video files

With Flixier you can also edit your MP4 files, easily remove unwanted parts from videos, by cutting, trimming and deleting, or add new videos, images and text to make an entire video collage.

Add auto subtitles to your videos

Most videos these days are watched on social media or with their sound turned off. To make an impact subtitles are a must. With the Flixier video editor all you need to do is press a button and subtitles will be automatically generated for your entire MP4 video.

Make your video engaging

Besides compressing video our online video editor will also enable you to make videos more engaging with just a few clicks. Add transitions, motion titles, music and effects without any video editing experience.


I’ve been looking for a solution like Flixier for years. Now that my virtual team and I can edit projects together on the cloud with Flixier, it tripled my company’s video output! Super easy to use and unbelievably quick exports.

Steve Mastroianni -

My main criteria for an editor was that the interface is familiar and most importantly that the renders were in the cloud and super fast. Flixier more than delivered in both. I've now been using it daily to edit Facebook videos for my 1M follower page.

Evgeni Kogan

I'm so relieved I found Flixier. I have a YouTube channel with over 700k subscribers and Flixier allows me to collaborate seamlessly with my team, they can work from any device at any time plus, renders are cloud powered and super super fast on any computer.

Anja Winter, Owner, LearnGermanWithAnja

Frequently asked questions.

Frequently Asked Questions

If you have any further questions, Get in touch with our friendly team
If you have any further questions, Get in touch with our friendly team

How to reduce the size of an mp4 file?

How to reduce the size of an mp4 file?

To reduce the file size on an MP4 file first import it in the Flixier video compressor. When the file is imported just select the compression settings and press the “Compress video” button, the video will be processed and ready for download in no time.

Is MP4 compressed video good quality?

Is MP4 compressed video good quality?

When compressing an MP4 file the quality depends a lot on the aggressiveness of your compression. If you reduce the file size by a lot then the quality might suffer. In Flixier you can see an estimated file size meaning that you will always reduce the file just as much as you need and maintain as much quality as possible.

Do i need to download any software to compress mp4?

Do i need to download any software to compress mp4?

With an online video compressor like Flixier you don’t need to download or install any software, just import your video file and you’re ready to compress it and take advantage of our cloud powered compression technology for a super fast compression on any device.

Do i need to download any software to compress mp4?

Do i need to download any software to compress mp4?

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