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Convert images, documents, video and audio in your browser. Your files stay on your device.

Convert GIF to MKV

Turn an animated GIF into a MKV video: it’s much smaller, plays everywhere and can be posted on social networks that don’t accept GIFs.

Drop your files hereor (GIF and over 40 other formats). You can also paste an image.No upload: everything happens on your device

How to convert GIF to MKV

  1. Add your GIF files

    Drag one or more GIF files onto the dashed area, or tap it to pick them from your device.

  2. Choose MKV and the options

    MKV is already selected; the options hold the settings that matter for this conversion.

  3. Convert and download

    Press “Convert to MKV”. When it’s done, download the files one by one or all together in a ZIP archive.

Good to know. An MP4 video is often ten times smaller than the original GIF.

GIF and MKV compared

Source format

GIF

GIF (Graphics Interchange Format)

The format of short animations and memes. It uses a palette of at most 256 colours, so it’s fine for simple graphics but degrades photos. Transparency is all-or-nothing: a pixel is either solid or invisible.

Best for
Short animations, icons and graphics with few colours.
Limits
Only 256 colours and no partial transparency; long animations get very heavy.
Compression
lossless, max 256 colours
Transparency
Yes
Animation
Yes
Extensions
.gif
Since
1987
All about the GIF format

Target format

MKV

Matroska Video

An open, flexible container that accepts almost any codec, several audio tracks and subtitles. It’s loved for films and series, but TVs, iPhones and some editors can’t read it.

Best for
Archiving films with several languages and subtitles.
Limits
Poorly supported by Apple devices, social networks and editing software.
Type
open container
Typical codecs
any
Compatibility
good on PCs, limited on phones
Extensions
.mkv
Since
2002
All about the MKV format

Questions about GIF and MKV

Which browser do I need?

Audio and video use WebCodecs: they work in up-to-date Chrome, Edge, Opera and Samsung Internet, in Firefox 130+ and Safari 17+ (with a few limits on the formats they can create). If your browser can’t create the chosen format, we tell you before you start.

Are my GIF files uploaded to a server?

No. The conversion from GIF to MKV happens entirely in your browser, using your device’s computing power. Files aren’t sent or stored anywhere: when you close the page they’re gone from memory too.

How many files can I convert at once?

Up to 100 files at a time. There’s no fixed size limit: it depends on your device’s memory. On smartphones it’s best to work in smaller batches with heavy files such as videos.

Does it work on iPhone and Android?

Yes, with up-to-date Safari, Chrome, Firefox, Edge and Samsung Internet. On phones, converted files end up in the Downloads folder or the Files app.

Do I need an internet connection?

Only to open the page (and, the first time, to download the components needed for that type of file). After that the conversion keeps working even if the connection drops.

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