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Supports: MKV
This walk-through is for anyone who needs a pixel-exact still out of an MKV (Matroska) video — a single frame at a precise timestamp, or a run of separate frames — saved as a lossless TIFF for print, archival, or frame-by-frame analysis. By the end you will know which frame-selection mode to use and which TIFF settings (frame selection, compression type, resolution) match your downstream workflow.
.mkv onto the page or click "+ Add Files". You can queue several MKV files and they run with the same settings.12.500 for 12.5 s) to grab one still, or choose Multiple Screenshots to capture several frames as separate TIFF files.The hard part of this conversion is not the upload — it is picking the right frame and a TIFF profile that matches what you do next. Two decisions matter:
Which frame mode. Specific Frame extracts one still at the exact time you enter in Time (seconds); the field accepts decimals, so 12.500 lands on the frame at 12.5 seconds. Multiple Screenshots produces several separate TIFF files sampled across the clip — useful for contact sheets or stepping through a moment frame by frame. This tool extracts still frames; it does not produce an animation.
Which TIFF profile. TIFF is a container that can hold uncompressed or losslessly compressed pixels at high bit depth, so set it for the job:
If you only need the .tif extension instead of .tiff, switch File extension to TIF, or use the MKV to TIF converter — the two extensions are the same format, just spelled differently.
Compression Type is the setting that decides both the size of the file and whether it still counts as a master. Four of the five options are lossless; only one is not:
| Compression Type | Lossless | Relative size | Compatibility | Best for |
|---|---|---|---|---|
| None | Yes | Largest | Universal — any TIFF reader ever written | A raw master where file size is irrelevant |
| LZW | Yes | Moderate | Very broad, including older software | The safe default for archives and print delivery |
| Deflate (ZIP) | Yes | Usually the smallest of the lossless options on photographic frames | Every modern editor; occasionally rejected by very old readers | Lossless storage when you want to save disk space |
| PackBits | Yes | Small on flat graphics, barely smaller on photos | Extremely broad; a simple run-length scheme | Frames of titles, graphics, or animation rather than live action |
| JPEG | No | Smallest by far | Broad, but the file is no longer a lossless master | Only when you want a small preview and do not care about pixel fidelity |
If you are unsure, LZW is the right answer: lossless, meaningfully smaller than uncompressed, and readable by essentially anything that opens TIFF at all.
| Property | TIFF | PNG | JPG |
|---|---|---|---|
| Standard | Adobe TIFF 6.0 (1992) | ISO/IEC 15948 | ISO/IEC 10918 |
| Compression | Your choice; opens on lossy JPEG, LZW for lossless | Always lossless | Always lossy |
| Bit depth | 8, 16, or higher per channel | 8 or 16 per channel | 8 per channel |
| Color models | RGB, CMYK, grayscale, and more | RGB and grayscale only | YCbCr, converted to RGB on display |
| Alpha channel | Supported | Supported | None |
| Browsers display it | No | Yes | Yes |
| Typical size of one 1080p frame | Large | Moderate | Small |
| Best for | Print, archival masters, colour-critical work | Screenshots and web use where every pixel must survive | Sharing, embedding, anything size-sensitive |
If the MKV is DRM-protected or partially corrupted, frame extraction can fail or land on a black frame — TIFF cannot recover pixels the container never decoded. Variable-frame-rate recordings can also make a typed timestamp drift by a frame or two; nudge the Time (seconds) value and re-run. And if your goal is actually a short animated clip rather than a still, TIFF is the wrong target — extract to an animated format instead, since a TIFF holds one frame per file.
TIFF keeps every pixel exact and supports high bit depth and CMYK, which is why the print, publishing, and archival communities standardized on it. JPG is lossy, and PNG — while also lossless — is RGB-only and not built for print color. If the frame is headed for a print lab, an archive, or color-critical editing, TIFF is the safer master; for the web, PNG or JPG is smaller.
No, as long as you keep a lossless Compression Type (LZW, Deflate, PackBits, or None). The frame is decoded from the MKV and written pixel-for-pixel into the TIFF. The only lossy option is the JPEG-in-TIFF compression mode, which you can avoid. The source frame's own quality — its codec and bitrate — sets the ceiling; TIFF preserves it but cannot add detail the MKV never stored.
Specific Frame extracts one still at the timestamp you type into Time (seconds). Multiple Screenshots samples several frames across the clip and saves each as a separate TIFF file. Use the first when you know the exact moment you want, and the second to build a contact sheet or compare nearby frames.
LZW is the standard, lossless choice and has the widest compatibility, so it is the safe default for archives. None (uncompressed) gives you a raw master at a larger size, while Deflate (ZIP) compresses losslessly and is usually a bit smaller than LZW. All three are lossless; only the JPEG compression option discards data.
Yes. TIFF supports more than 8 bits per channel through its SampleFormat tag, so selecting a 16-bit depth keeps a wider tonal range than an 8-bit export. This matters most for color-graded, log, or HDR-sourced video; for ordinary 8-bit footage, an 8-bit TIFF already captures everything in the frame.
The first frame of the video. Time (seconds) starts at 0, so running the conversion without touching it grabs the opening frame — which is often not what you want, because many recordings begin on black, a fade-in, a slate, or a title card. If your TIFF comes out black or empty, that is almost always the reason rather than a failed conversion. Scrub through the clip in a player first, note the timestamp of the moment you actually want, and type it into the field; decimals are accepted, so 12.500 targets the frame at 12.5 seconds. When you are not sure of the exact moment, switching to Multiple Screenshots and picking the best result afterwards is faster than guessing timestamps one at a time.
No, and no setting will produce one. TIFF itself is perfectly capable of storing an alpha channel, but the frame coming out of the MKV has no transparency to store: the video codecs that fill ordinary Matroska files deliver fully opaque pixels, so every pixel in the extracted frame is solid by definition. If you need a cutout — a subject isolated against nothing — that is a masking job for an image editor after extraction, not something the conversion can do. And if you only wanted a still for a web page or a document rather than a print-quality master, TIFF is heavier than you need: MKV to PNG gives you a lossless frame browsers display directly, and MKV to JPG gives you a much smaller one.
Your MKV is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. In our testing, a single 1080p frame exported as an LZW-compressed TIFF lands in the low single-digit megabytes, while an uncompressed 4K frame can run several times larger — plan the download accordingly, since the practical limit on big jobs is upload size and time.