Screenix
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Sharp tab recordings, in 4K MP4 at up to 120 fps.

Screenix captures the page in near-lossless frames and encodes your export on your own computer at constant quality, so small text stays readable and dark pages stay clean.

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Free to try No account needed $19 once to remove the watermark

The short answer

Export the way you need it

Updated October 2026

  • MP4 with AV1 (default) or H.264, or WebM.
  • 720p, 1080p, 1440p, 4K or the source size.
  • 30, 60 or 120 fps, with the cursor and zooms rendered at the full frame rate.
  • Aspect ratios 16:9, 9:16, 1:1, 4:5, 4:3 or the source shape.

Quality

Why text looks sharper in a Screenix export

Tab frames are captured as maximum-quality JPEGs. Measured on a page of small text against a lossless screenshot, that's near lossless, where the more common quality 90 visibly softens letters.

Exports use constant quality rather than a fixed bitrate where Chrome supports it. Fixed-bitrate encoders tend to starve dark, detailed pages, which leaves blocky trails behind moving windows. AV1 at constant quality is the default because it keeps both detail and file size in check.

Frame rate

Smooth motion, even on a quiet page

The page itself is captured when it changes, typically 30 to 60 frames per second. The cursor, click effects and zooms are rendered for every output frame, so a 60 or 120 fps export moves smoothly even when the page is still.

Local encoding

Encoded on your computer, not in a queue

Exports run in Chrome with WebCodecs, on a software encoder or your graphics card. There's no upload, no render queue and no file-size cap from a cloud plan.

The source resolution sets the ceiling: a 4K export of a 1080p window is upscaled. For true 4K detail, record on a high-resolution display.

What you get

Every detail of a good demo,
handled for you.

Auto zoom

Zooms that follow your clicks

Screenix zooms in on every click and pans with the cursor, so viewers see what you did without squinting. Keep the automatic zooms or move, resize and add your own on the timeline.

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The cursor, rebuilt

A cursor that looks animated by hand

Screenix records the page without your system cursor, then draws a crisp macOS-style one in its place, with spring smoothing, click bumps, motion blur and a soft fade when you stop moving. Seven cursor themes, all adjustable.

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From stop to sent

Send a link instead of a file

With a Screenix yearly or team plan, upload from the editor and copy the link. Viewers watch in any browser and can leave timestamped comments. Without one, export MP4 or WebM up to 4K, free.

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Know before you install

Tabs only,
and it follows you between them.

Screenix for Chrome records the tab in front of you, so it can draw a perfect cursor over pure page pixels.

Records browser tabs

Screenix captures the page in the tab you're on, at full quality, without your system cursor.

Follows you between tabs

Switch tabs, open links or reload in the same window and the recording keeps going in one take.

Tab audio from the first tab

Your mic and camera record throughout. Page sound comes from the tab you started on.

Not your whole screen

It doesn't capture your desktop, other apps or other windows. On Linux, the Screenix desktop app does.

FAQ

You have questions.
We have answers.

Yes. Every resolution and frame rate is available for free, with a small watermark. A $19 one-time license removes it.

Keep reading

Crisp text. Clean darks. Real MP4.

Record a tab and export 4K at up to 120 fps, encoded on your own machine.

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