How do I convert GIF to MKV?

Add your GIF file to the upload area above, then press Convert. The MKV file downloads straight to your device. You do not need an account, and there is no watermark.

Are my files uploaded to a server?

No. This conversion runs entirely inside your browser using WebAssembly, so the file never leaves your device — you can even disconnect from the internet after the page loads and it will still work.

Does converting to MKV reduce quality?

MKV uses lossy compression, so some data is discarded. At the default quality the difference is very hard to see or hear; raise the quality setting if you need to be certain, at the cost of a larger file.

How large a file can I convert?

Up to 200 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.

VideoAdjustable qualityRuns in your browser

GIF to MKV Converter

Turn GIF files into MKV in a couple of clicks. 256-colour animated format, still ubiquitous. Flexible container that holds any codec, subtitles and tracks. The output is re-encoded, so quality depends on the settings you choose.

On your deviceNever uploadedGone when you close the tabHow this works

Drop your files here

GIF files (.gif) · up to 200 MB each

or paste files from your clipboard

Ready when you are

Drop a GIF file above and FileTools360 will turn it into MKV — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your GIF files
Drag them onto the upload area, choose them from your device, or paste them from your clipboard. You can queue several at once.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control codec, resolution and bitrate.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

GIF and MKV explained

GIF is a 1987 format limited to a 256-colour palette per frame, with support for simple animation and one fully transparent colour. Its longevity is cultural rather than technical — nothing about it is efficient by modern standards.

Matroska is a container designed to hold essentially anything: any codec, unlimited audio tracks, subtitle tracks, chapters and attachments in one file. It is the format of choice for archiving films with multiple languages.

Where GIF files come from: Reaction images, simple UI animations, and screen recordings shared in chat.
Where MKV is used: Media archives, anime and film collections, and high-quality recordings.

GIF vs MKV

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

GIF compared with MKV
Property	Source	Target
Compression	Lossless	Container (depends on codec)
Transparency	Yes	—
Animation	Yes	Yes
Colour limit	256 per frame	Full colour
Introduced	1987	2002
Browser support	Universally supported.	Great in VLC and media servers, poor in browsers.

GIF is stronger at: Animation plays anywhere without a video player. Universally supported, including in email and old forums. Lossless within its 256-colour limit.
MKV is stronger at: Holds any codec. Unlimited audio, subtitle and chapter tracks. Open and well documented.

Why convert GIF to MKV?

People make this switch when they run into the limits of GIF: the content is photographic, longer than a few seconds, or would be better as MP4 or WebM. MKV is the better fit when archiving or watching in a capable player such as VLC or a media server.

GIF limitations that prompt the switch: 256 colours per frame, so photographs and gradients look banded. Enormous files compared with video — often 5–10× an equivalent MP4. Transparency is binary: a pixel is either fully opaque or fully transparent, producing jagged edges.
What you give up: Browsers will not play it. Many TVs, phones and editors reject it.

Does converting GIF to MKV reduce quality?

Both formats store the content without discarding data, so this conversion preserves it exactly. The file size may change because the two formats compress differently, but the content itself is unaffected.

A GIF is not a video. It is a sequence of full images with no interframe compression, which is exactly why it is so large.

About these formats

Source

Graphics Interchange Format

256-colour animated format, still ubiquitous.

Extensions: .gif
MIME type: image/gif
Best for: Short animations · Simple graphics · Chat and forums
Compatibility: Universally supported.

Target

Matroska Video

Flexible container that holds any codec, subtitles and tracks.

Extensions: .mkv
MIME type: video/x-matroska
Best for: Multi-track video · Archiving · Media servers
Compatibility: Great in VLC and media servers, poor in browsers.

Animation and timing are preserved. Video codecs handle gradients far better than GIF's 256-colour palette, so the result usually looks better and is much smaller.

Good to know