MKV Editor

Cut, crop and add text and subtitles in your browser with our online MKV video editor

A powerful, but intuitive MKV video editor

If you’re looking for a way to edit MKV files quickly and easily, you’re in the right place! Flixier is an online video editor that lets you cut, crop and convert MKV files easily in minutes, all without having to download or install anything to your computer. 

What’s more, you can use Flixier to easily add customizable, professionally animated text to your videos, generate automatic subtitles or natural sounding text-to-speech voiceovers in over a dozen different languages and enhance videos with filters and color corrections. And because Flixier is so intuitive and easy to use, you don’t even need any previous video editing experience in order to make your edits.

MKV Editor

Edit MKV files in your browser

Flixier works in your web browser, so you don’t need to download or install anything in order to use it. This also means that you can use Flixier on any operating system, including ChromeOS, Mac, or Windows. Our cloud-powered technology ensures that Flixier will always run smoothly and have your videos ready in a few minutes, regardless of your system specifications.

Use the Flixier MKV editor for free 

Flixier is free to try, so you can use it to edit your MKV videos for free, without even registering an account. Free accounts get access to all of the same features that our pro users get, so you can try it out for free and experience the power of cloud video editing for yourself before deciding whether or not to spend money on it.

Generate subtitles for your MKV files

Our free MKV editor allows you to generate synchronized subtitles for your videos automatically or create them manually using our powerful subtitles tool. You can save these subtitles in a large number of different  formats and even translate them automatically to more than a dozen different languages.

Add text, transitions and combine MKV 

Flixier is a fully featured video editor, so you can use it to combine multiple MKV files together, cut them or choose from our library of professionally animated motion text and animated overlays to give your videos a more professional touch. It’s all done by dragging and dropping, so you can make stylish videos as easily as you would create a slideshow presentation.

How can I edit MKV files?

How can I edit MKV files?

Drag your MKV files over to your Flixier library. Click the Import button to bring your files over from online sources like Google Photos, Dropbox or other online storage services.


Drag your MKV files down to the Timeline. Use the Timeline to trim, cut or combine videos, add motion text and graphics from the Text tab, or generate subtitles for your video automatically. You can add transitions between clips by overlapping them on the Timeline and choosing a transition from the dropdown list, or use the right-side menu to apply filters and use simple sliders to enhance the sharpness or colors in your video.

Save the video

Click the Export button in the top right corner and then choose Export and Download. Flixier will take a few minutes to process your videos and then you’ll be able to download it to your computer or publish it online.

Why use Flixier to edit MKV online?

Convert your MKVs to MP4 easily

MP4 videos are widely supported on all devices, more efficient in size and easier to share online. Flixier automatically converts all uploaded videos to MP4 in seconds. Even more, you can choose to export your MKV files as GIFs or even audio files if you need an easy way to rip the audio from an MKV.

Bring videos over from cloud sources

Thanks to Flixier’s cloud integrations, you can bring MKVs over for editing in seconds from a variety of online sources. Save time and hard drive space by bringing footage over from Google Photos, Dropbox or OneDrive.

Start editing with an easy to learn MKV editing software

Flixier’s precise yet intuitive timeline makes it a great tool for people who need to edit MKV files without any previous experience. Being able to easily learn Flixier as you go also means that you won’t have to waste hours watching online tutorials just to be able to realize your projects.

Publish MKV videos directly to YouTube

Our MKV editing software allows you to publish your videos straight to YouTube, Vimeo, Facebook and other online platforms directly. Choose title, thumbnail and description and let Flixier handle the rest for you!


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

Can you edit MKV files?

Can you edit MKV files?

Yes! You can edit MKV files easily right in your browser using Flixier.

Does YouTube accept MKV?

Does YouTube accept MKV?

YouTube doesn’t allow you to upload MKV files, but you can bypass that using a tool like Flixier to convert your MKV videos to MP4 and publish them to YouTube in minutes.

How can I edit MKV files for free?

How can I edit MKV files for free?

You can use Flixier to edit MKV files right in your web browser without having to pay anything.

How can I edit MKV files for free?

How can I edit MKV files for free?

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