Lumiko

Product Introduction

1. Definition: Lumiko is a browser-based screen recording and video editing software application, specifically a Google Chrome extension. It functions as a local, client-side tool that captures desktop activity, analyzes user interaction data (cursor movement, clicks), and provides an integrated non-linear editor (NLE) for post-production, all within the browser environment.
2. Core Value Proposition: Lumiko exists to automate the most tedious aspects of creating professional, engaging screen recordings—specifically, camera movement and basic editing. Its primary value is enabling users, from developers to educators, to produce polished, cinematic tutorial videos, product demos, and bug reports without manual keyframing, expensive software, or uploading footage to the cloud.

Main Features

1. Automatic Cursor Zoom & Pan (Magic Tracking): This feature uses client-side algorithms to track cursor coordinates and click events during a recording session. Post-capture, it analyzes this data to generate Bézier curve-based smooth zoom and pan animations that frame the user's actions. This eliminates the need for manual keyframe animation in traditional video editors like Camtasia or Adobe Premiere, automating cinematic camera movement.
2. Integrated Timeline Editor with Local Rendering: Unlike cloud-based recorders, Lumiko includes a full-featured, browser-based editing timeline. Users can perform non-destructive edits: trimming clips with razor/split tools, deleting segments, and drag-and-drop reordering. All rendering is hardware-accelerated and occurs locally via the WebCodecs API and related browser APIs, ensuring zero upload wait times and full privacy, exporting up to 4K resolution.
3. Smart Blur for Privacy Obfuscation: A dynamic privacy tool that allows users to draw rectangular regions over sensitive information (e.g., terminal windows showing API keys, browser tabs with emails, financial data). The tool applies a real-time blur or pixelation effect to these regions throughout the video timeline, which is rendered directly into the final export to protect confidential data.
4. Configurable Webcam Overlay & Custom Backgrounds: The webcam feed is captured as a separate media stream and can be composited as a draggable, resizable circular overlay with CSS-based drop-shadow effects. Users can replace the default screen background with gradient fills, solid colors, transparency (for green-screen style effects), or custom uploaded images (e.g., brand logos, Unsplash photos), allowing for branded video content.

Problems Solved

1. Pain Point: The significant time investment and skill barrier required to add professional polish—specifically, smooth zoom effects and clean edits—to screen recordings. Manual keyframing is time-consuming and has a steep learning curve.
2. Target Audience: Software Developers & Engineers creating coding tutorials, pull request reviews, or bug reports; SaaS Founders & Product Marketers producing feature demos and onboarding content; Educators & Course Creators making instructional software videos; Customer Support Teams creating visual guides and troubleshooting clips.
3. Use Cases: Creating a software tutorial where the zoom automatically follows the instructor's cursor to highlight UI elements. Recording a bug report where sensitive user data in the console needs to be blurred before sharing. Producing a quick product demo for social media (TikTok, YouTube Shorts) using the 9:16 aspect ratio export and a branded background.

Unique Advantages

1. Differentiation: Versus traditional desktop software (e.g., OBS Studio, Camtasia), Lumiko requires no installation (beyond the Chrome extension), offers automated camera motion, and has a simpler, integrated workflow. Versus cloud-based recorders (e.g., Loom, Vidyard), it processes everything locally, ensuring faster exports, no subscription fees for core features, and superior data privacy as videos never leave the user's machine.
2. Key Innovation: The synthesis of automated cinematography (cursor-tracking zoom/pan) with a fully local, browser-native editing and rendering pipeline. This combination of intelligent automation and client-side processing is unique in the screen recording landscape, offering professional results without the typical complexity or privacy concerns.

Frequently Asked Questions (FAQ)

1. Is Lumiko really free, and what are the limitations of the free tier? Yes, Lumiko's core functionality is free forever. The free tier includes unlimited recording, automatic cursor zoom, Smart Blur, webcam overlay, basic trimming, and exports up to 1440p (2K) resolution. The primary limitation is a "Made with Lumiko" watermark on exports.
2. How does the local processing and privacy model work? All screen capture, video editing, and final rendering processes are executed directly within your browser using your computer's hardware (GPU/CPU). Video data is never transmitted to Lumiko's servers, ensuring complete privacy and security, which is critical for recording sensitive software or confidential information.
3. What is included in the Lumiko Pro one-time lifetime payment? The Pro license ($29 one-time) removes all watermarks, unlocks 4K Ultra-HD export resolution, and provides up to 3 device activations. It includes all free features permanently with no recurring subscription, making it a cost-effective solution for professional use.
4. Can I use Lumiko to record audio from my system and microphone simultaneously? Yes, Lumiko supports dual audio capture. It can record system audio (e.g., application sounds, music) and microphone input concurrently, mixing both audio tracks into a single output channel during the local export process.
5. What browsers and operating systems are supported? Lumiko is currently a Google Chrome extension, requiring the Chrome browser or Chromium-based browsers like Microsoft Edge or Brave. It operates on any desktop operating system (Windows, macOS, ChromeOS, Linux) that supports the Chrome browser and the necessary desktopCapture API permissions.