auto zoom screen recorder
Auto Zoom Screen Recorder
Record your screen and get the zoom for free: the camera follows your cursor and the export zooms where you acted. No editing.
Record a Browser Tab — With Its Audio, Without an Upload
Record one tab and its audio to MP4, converted on your machine by the browser itself. No account, no cloud, no watermarks.
- Free
- No account
- Runs locally
By Virgil Dean · Updated
Sound familiar?
The everyday friction this page exists to remove.
Screen recorders record everything
You wanted the demo in the tab — not your notifications, not your desktop, not the fourteen other tabs. Desktop capture tools make the frame wrong by default.
The free tiers push you to the cloud
Most tab recorders want an account, process the video server-side, host it on their domain and stamp a watermark on the free export — for a recording that was never meant to leave your machine.
WebM that nobody can open
Chrome's own capture pipeline outputs WebM. Sharing it into a ticket, a deck or a chat means a conversion detour through a desktop app or an upload-to-convert website.
The fix, step by step
From capture to finished image in 4 steps.
Pick the tab
Start the recorder and choose the tab to capture — its video and audio are recorded, nothing else on your screen.
Record
Drive the demo or the reproduction. The capture writes to the browser's local storage as it runs.
Convert locally
On finish, the browser itself converts the capture to MP4 (or GIF) using a WebAssembly encoder — expect the conversion to take a moment on longer clips.
Save and share
Export the finished file to your disk and attach it wherever it was going. It never touched a server in between.
Overview#
Recording a browser tab sounds like a solved problem until you try it: the OS recorder grabs your whole screen, the Chrome pipeline hands you a WebM that half your recipients cannot open, and the first page of tab recorders turns out to be cloud services that want the video on their servers before you can have an MP4.
The tool on this page does the whole job inside the browser. It is the Web Video Recorder extension built in this library: pick the tab, record its video and audio, and let a WebAssembly encoder — running on your machine — produce the MP4. The file is exported to your disk, and no upload step exists anywhere in the pipeline.
Its scope is deliberately narrow: one tab at a time, Chromium only, and DRM-protected streams stay black because the browser itself protects them. The full documentation — formats, storage and every limit — is on the extension's own page; the trade-offs between formats are compared in MP4 vs GIF vs WebM for screen recordings.
What you can do
What this workflow looks like with the extension installed — as implemented today.
One tab, exactly
Pick the tab and the recorder captures that tab's video and its audio — the demo, the call, the playback — while the rest of your screen stays private.
MP4, converted in the browser
The recording is converted to MP4 by a video encoder compiled to WebAssembly and running on your machine. No upload, no server, no conversion website.
Recordings stay local
Captures are written to the browser's private local storage while recording. They exist on your disk, under your control, until you export or delete them.
GIF export too
Need a short loop for a ticket or a changelog? Export the same capture as a GIF — same local pipeline, same no-upload guarantee.
No account, no watermark
Free to install and use. The exported file is exactly what was recorded — no overlay, no branding, no hosting step you did not ask for.
Who it is for
The situations this task page is written for.
Product demos and walkthroughs
Record the app in the tab, with the cursor's clicks and the page's audio, and hand over an MP4 that opens anywhere.
Bug reproduction videos
The reproduction lives in one tab; capture just it, attach the MP4 to the issue, and skip the desktop noise around it.
Saving your own streams
Record a webinar, a lecture or a meeting running in a tab — with the honest limit that DRM-protected streams stay black (see below).
Short loops for tickets
A five-second interaction exports as a GIF that previews inline in Jira, GitHub and Slack.
How it compares
An honest look at where this tool fits — and where other options fit better.
| Criterion | Record Browser Tab | Cloud tab recorders (Loom-style) | OS screen recorders |
|---|---|---|---|
| Records exactly one tab | Yes — the tab you pick | Yes, or the screen | Whole screen or window by default |
| Your recording stays local | Yes — local storage, local conversion | No — uploaded and hosted by default | Yes |
| MP4 without an account | Yes | Usually behind signup and watermarks on free tiers | Yes, but WebM on Chrome |
| Share page with a link | No — you attach the file yourself | Yes, that is their core feature | No |
| No length limits from a server | Limited by your disk, not a plan | Free tiers usually cap length | Limited by disk |
Our take: Cloud recorders win when you want instant share links and viewer analytics. When the recording contains customer data, an unreleased feature or anything else that should not be uploaded in the first place, tab capture with local MP4 conversion is the honest option.
Limitations & known boundaries
What this extension does not do, and the cases where results may be imperfect. Stated plainly so you can decide before installing.
- Records one tab at a time — not the whole desktop, not multiple tabs, not other applications.
- The tab must stay open and playing while recording; closing it or navigating away ends the capture.
- DRM-protected streams (most paid movie and music services) are blocked by the browser and record as black or silent. That is a browser restriction, not a setting.
- Conversion runs on your machine: on slower computers, converting a long clip can take roughly as long as the clip itself.
- Requires Chrome 116 or newer, because the capture and offscreen APIs it is built on do not exist in older versions.
Frequently asked questions
Questions people search for before choosing a record browser tab.
How do I record a browser tab?
Install the extension, click record, pick the tab, and stop when done. The capture is converted to MP4 in your browser and saved locally — no upload step exists in the tool.
Does tab recording include audio?
Yes — the chosen tab's audio is captured along with its video. What is not captured is your microphone or other tabs; the unit of capture is the tab.
Why do DRM streams record as black?
Paid streaming services use DRM that the browser deliberately protects: protected frames are never handed to capture APIs, so they record as a black area. No tab recorder can change this, and any tool claiming otherwise deserves suspicion.
Where do recordings go?
Into the browser's private local storage on your machine while recording, then to a file you export. There is no cloud library, no share page and no account.
Is this tab recorder free?
Yes — free to install from the Chrome Web Store and free to use, MP4 and GIF export included, no watermark.
Can it record a Zoom or Meet call in the browser?
If the call runs in a tab, yes — video and audio of that tab are captured. Check the meeting's rules and the participants' consent before recording calls.
Powered by Web Video Recorder
This page documents the task; the extension behind it carries the full feature list, limits and version history.
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Editorial disclosure
We are the developers of the extensions documented on this site. This page describes the shipped version as we built and tested it — including its limitations — and was fact-checked on . Claims are based on our own testing of released builds; where third-party tools are named, their capabilities are described as documented by their publishers.
Try the Record Browser Tab in your browser
Free to install. If it does not fit your workflow, removing it takes one click.