How to Record Your Screen in One Click Without Installing Software
A practical guide to capturing your screen directly from the browser — no downloads, no accounts, and no screen recording lag — using a lightweight Chrome extension.
The most common reason people delay recording a screen — “I’ll set up software later” — is the reason most recordings never happen. Setup friction kills spontaneity, and spontaneous recordings are often the most useful ones: the bug reproduced in front of you, the workflow you want to share while you’re in the middle of doing it, the quick demo someone asked for in Slack.
A browser extension removes that friction. One click, a prompt to select what you’re recording, and you’re live.
What you can capture
Tab only. The cleanest option for product demos, tutorials, and anything where the rest of your screen is irrelevant. Only the selected tab is captured, and the recording stops or pauses automatically when you navigate away.
Full screen. Everything visible on your primary monitor. Useful for walkthroughs that span multiple apps, or when you want to show context that includes your desktop or other windows.
Application window. A single app window, captured without any other windows visible behind it. This is the right choice when you want the application to feel self-contained — a Figma design, a code editor, a spreadsheet — without the clutter of a full desktop recording.
Most browsers expose these choices through the getDisplayMedia API, which is what powers tab/screen/window capture in browser-based tools. The extension wraps this API with a consistent UI so you don’t have to navigate the browser’s native permission prompt every time.
Recording audio alongside the video
You can add two separate audio sources to a recording:
Microphone audio. Your voice, recorded from the computer’s microphone. Essential for tutorials and demos where you’re narrating what’s on screen.
Tab/system audio. The sounds coming from the browser or the operating system — useful when you’re demonstrating a tool that plays sound and you want the recording to include it. Note that recording system audio requires explicit permission and isn’t available in all configurations.
You can record both simultaneously, either merged into a single audio track or kept separate if you plan to edit them individually.
Keeping file sizes manageable
Uncompressed screen recordings get large quickly — a 10-minute 1080p session at 30fps can easily exceed 500MB depending on the content. Most browser-based recorders use WebM with VP8 or VP9 encoding, which compresses well for screen content (large flat areas of colour and repeated elements compress efficiently).
If you need an MP4 specifically — for sharing to a platform that doesn’t accept WebM, or for compatibility with video editors — the extension handles conversion in the browser using the same technology as other client-side video tools. No upload required.
For shorter clips (under 2 minutes), file size is rarely a concern. For longer sessions, picking a lower resolution (720p rather than 1080p for a tutorial where the text is still legible) cuts file size roughly in half.
Starting from the extension popup
Click the ScreenKit icon in the Chrome toolbar. You’ll see three options: Tab, Window, or Screen. Select one, confirm the browser’s permission prompt, and the recording starts.
A small indicator appears in the corner of the recording area so you always know you’re capturing. To stop, click the indicator or open the popup and click Stop. The recording immediately downloads to your downloads folder, or opens a review screen (depending on your settings) where you can trim the start and end before saving.
No account needed. The video never leaves your browser.
Common use cases
Bug reports. A 30-second recording that shows exactly how to reproduce a bug is orders of magnitude more useful than a written description. The development team can see the exact steps, the browser state, and any console errors that appear on screen.
Async team updates. A quick walkthrough recorded mid-task is faster to produce than a written update and easier to follow than a diagram. For distributed teams, short async recordings replace meetings for a significant share of information-sharing that doesn’t actually require real-time presence.
Personal documentation. Recording yourself doing an unfamiliar process once — setting up a new tool, configuring a system, navigating a complex UI — means you have a reference the next time you need it, without relying on memory or notes that won’t make sense six months later.