How to convert MKV to GIF
- Click Choose files or drop your MKV video into the box above.
- Set the start and end, the width and the frame rate.
- Click Convert and download the GIF when it is ready.
About MKV and GIF
What is MKV?
MKV is a flexible open container that can hold almost any video and audio codec, several audio languages, subtitles and chapters in one file. That makes it popular for movies, but iPhones, QuickTime, iMovie, many editors and most websites do not accept MKV — converting to MP4 makes it play everywhere.
- Holds any codec
- Multiple audio and subtitle tracks, chapters
- Open and royalty-free
- Not supported on Apple devices, many TVs and editors
- Rejected by most upload sites
What is GIF?
GIF is the original animated image format of the web. Each frame can use at most 256 colors and a pixel is either fully transparent or fully opaque, so photos look grainy and animated GIFs are much larger than the same clip as MP4. It is still everywhere because every app can play it without a video player.
- Animation that plays anywhere, no player needed
- Supported by every messenger and social network
- Only 256 colors
- Huge files compared with MP4 or WebP
- No partial transparency
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder and is often simply repackaged without re-encoding.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
How do I make a small GIF?
Keep it short (a few seconds), use 10–15 frames per second and a width of 480 pixels or less. Each of these roughly halves the file size. For anything longer, a short MP4 is far smaller and better looking than a GIF.
Can I choose which part of the video becomes a GIF?
Yes. Play the video in the preview and set the start and end with the buttons, or type the times. Only that part is converted.
Are subtitles and extra audio tracks kept?
The main video and audio track are converted. Subtitles and additional audio languages inside the MKV are not carried over to GIF.
Is there a file size limit?
On the free plan each video or audio file can be up to 500 MB and each image up to 100 MB. With Pro the limit is 4 GB per file. Because everything happens on your device, the practical limit for very large files is your device’s memory.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. Long or 4K videos convert faster on a computer than on a phone.