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GIF to MKV Converter

Turn GIF files into MKV in a couple of clicks. GIF is a 256-colour animated format, still ubiquitous; MKV is a flexible container that holds any codec, subtitles and tracks. Some detail is discarded to fit the target format; how much depends on the format and your settings.

Not uploaded to any serverConverted on this deviceGone 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. 1

    Add your GIF files

    Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.

  2. 2

    Adjust the settings if you want to

    The defaults suit most people. Open Advanced to control codec, resolution and bitrate.

  3. 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.

Privacy, in plain words

Is it safe? Your GIF file is not uploaded anywhere

What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.

What happens instead. This site does not do it. There is no server here that receives files, so your GIF file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.

Check it yourself in ten seconds

Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.

The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.

Why this matters more than it sounds

Video is the format where the thing being converted is usually a recording of people, and often of people who did not expect a third party to have a copy. It matters more than it sounds, because of what video files usually are:

Medical or therapy consultations

clinical recordings under strict handling rules

Unreleased footage

material under embargo or still being edited

Recorded meetings and calls

everything said, by everyone in the room

Interviews

sources and participants who consented to you, not to a website

A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.

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
PropertySourceTarget
CompressionLosslessContainer (depends on codec)
TransparencyYes—
AnimationYesYes
Colour limit256 per frameFull colour
Introduced19872002
Browser supportUniversally 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?

MKV compresses without discarding data, but it cannot represent everything a GIF file holds. What does not fit is discarded permanently, so converting the result back will not restore it. Keep the GIF original if it is the only copy.

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

GIF to MKV Converter — questions

How do I convert GIF to MKV?

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

Is it safe to convert GIF files here — are they uploaded to a server?

No, nothing is uploaded. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website; it is converted there and sent back. That copy is what "upload" means, and it is the part that puts your file out of your control. This site does not do it. Your GIF file is read and converted by the browser you are using right now and never leaves this device, so there is no copy for anyone to store, read or hand over. You can prove it: turn off your Wi-Fi after this page loads and the conversion still works.

Can I convert confidential GIF files, like bank statements or contracts?

Yes, and that is the case this site was built for. Because the file never leaves your device, a confidential document is no more exposed than it is sitting in your own folder — there is no transfer, no copy on someone else's hardware, no retention period to read about and no staff with access. Nothing is logged about the file either: not its name, not its size, not its contents. The one thing worth saying plainly is that this protects the file in transit and at rest on our side, not from anything already on your own computer.

What should I know before converting GIF to MKV?

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.

Does converting to MKV reduce quality?

Yes, though not through compression — MKV stores what it holds without discarding data, but it cannot hold everything a GIF file does. What does not fit is dropped permanently, and converting the result back will not bring it back.

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.

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FileTools360 by the numbers

527 converters and tools65 file formatsnothing ever uploaded.