Local browser studio for polished demo videos

Product demos your audience understands in seconds

CaptureLab combines screen recording, auto-zoom, and fast editing in one flow. Record, trim, and export polished demo videos directly in your browser.

Start recording Watch live preview

Everything in one extension

Record, narrate, and polish your demo - no extra tools, no exporting back and forth.

Zoom editor

Add cinematic zoom in the editor

Add non-destructive zoom on cursor movement, adjust timing with keyframes, and export polished videos in minutes.

Local-First & Privacy-By-Design

Your recordings stay on your computer. Period.

CaptureLab Studio operates completely local-first. We built the entire recording, editing, and video export engine to run 100% inside your browser—with zero backend server calls.

Data Pipeline Architecture

Zero Cloud Roundtrips

Screen Capture

Browser Stream API captures screen & mic directly into local RAM.

Local Media Stream

Local Memory

Raw video frames & zoom markers stored safely in IndexedDB.

In-Browser Database

GPU Editor

Smooth zoom keyframes & device frames calculated via Canvas API.

Client Hardware

Direct Export

MP4 video file rendered directly to your downloads folder.

100% Private File

Zero-Trust Guarantee: No video bytes, audio recordings, or metadata are ever transmitted to external servers.

Local-Only Verified

0 Bytes Uploaded

Local-First Storage

In-Browser Engine

Your screen recordings, webcams, audio tracks, and edit timeline remain safely inside your browser memory & IndexedDB. Nothing leaves your machine.

100% On-Device

Client-Side Rendering

WebAssembly & WebCodecs

All video processing, zoom keyframing, canvas compositing, and MP4/WebM exports are computed directly on your hardware using your local GPU/CPU.

Zero Cloud Logs

No Server Processing

Zero Backend Infrastructure

We don't operate video rendering servers or cloud storage buckets. We can't view, analyze, or leak your recordings even if we wanted to.

Instant Compliance

Enterprise & NDA Ready

Confidential Workflows

Record secret staging environments, unreleased products, internal dashboards, and sensitive customer data without security compliance friction.

Workflow

From idea to share-ready demo in 3 simple steps

Open CaptureLab

Start directly in the browser or use the optional Chrome extension from the current tab.

Record your demo

Walk through your product as usual. CaptureLab automatically marks relevant scenes.

Publish in minutes

Adjust title, zoom, and cover, then export instantly for sales, support, and marketing.

One price. Yours forever.

Pay once, use CaptureLab for life. Only the AI demo agent is metered - everything else is unlimited.

Free

Try the whole tool, no signup.

Device mockups, recording & zoom editor
Webcam + voiceover, full 1080p HD
"capturelab.app" watermark on exports

Open the studio

Lifetime

$29one-time

Everything unlocked, forever.

No watermark
Unlimited recordings & screenshots
Use on up to 3 devices
All future updates

Get Lifetime - $29

After paying, your license key is emailed to you - paste it into the extension's settings to unlock.

Questions & Answers

If you have any other questions, please get in touch

Is CaptureLab really free to use?

Yes. You can open the web studio and start recording without paying or creating an account.

Does CaptureLab only work in Google Chrome?

The web studio uses modern browser recording APIs. Chrome offers the best-supported experience, and the optional extension adds a shortcut from the current tab.

Can I record tab audio and microphone at the same time?

Yes. You can capture browser tab audio and your microphone together for guided demos.

Do I need an account before I can start recording?

No. Recording, editing, and exporting happen locally in your browser without an account or cloud upload.

How long can a recording be?

Most users can record complete walkthroughs without issues. For very long sessions, we recommend splitting content into shorter chapters.

Can I trim or polish clips before sharing?

Yes. You can quickly trim recordings and clean up the final result before sending it.

How do I share my recordings with my team or clients?

Export the finished recording as a local video file, then share it through the channel of your choice.

Is CaptureLab suitable for sales demos and support videos?

Absolutely. CaptureLab is made for short, clear product demos, onboarding clips, and support explanations.