Video and Screen Tools

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Recording the screen

The screen recorder uses the browser's screen-capture API to record your whole display, a single window or one tab, with the option of including microphone audio and the tab's own sound. It produces a WebM file that downloads directly, with no length limit beyond your disk space and no watermark. It is the fastest way to make a bug report, a walkthrough for a colleague or a short demo, and the page explains the browser prompt that appears when you start, so you know what is being shared.

Extracting a frame

Video frame capture loads a video file, lets you scrub to an exact time with frame-step controls, and saves that moment as a PNG or JPEG at the video's native resolution. It is how you get a thumbnail, a still for a document, or a screenshot from a screen recording without a video editor. Files are decoded by the browser's own video element, so anything the browser can play can be captured.

Inspecting the screen

Viewport inspector reports the viewport width and height, the device pixel ratio, the physical screen size, the colour depth and the active media queries, live as you resize. Front-end developers use it to check which breakpoint is active; everyone else uses it to answer "what resolution is this monitor". It also shows the user-agent string and orientation for good measure.

Permissions and privacy

The recorder asks for screen and microphone access through the browser's standard prompts and records only for as long as you tell it to. Recordings and video files stay on your device; there is no upload, no processing on a server and no copy kept anywhere. The viewport inspector reads only what the browser already exposes to every page, and reports it to you rather than to anyone else.

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