# Professional video editing, right in your browser

> Tooscut is a browser-based video editor built on WebGPU and Rust/WASM with near-native performance. All processing stays on your machine.

Published: 2026-03-22
URL: https://daniliants.com/insights/professional-video-editing-right-in-your-browser/
Tags: video-editing, webgpu, wasm, browser-tools, rust, local-first, creative-tools

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## Summary

Tooscut is a browser-based video editor built on WebGPU and Rust/WASM that claims near-native performance without any installation. All media processing happens locally via the File System Access API, meaning nothing leaves your machine - a meaningful privacy and workflow advantage over cloud-based editors.

## Key Insight

- **Tech stack is genuinely interesting:** WebGPU for GPU-accelerated compositing + Rust compiled to WASM is the cutting-edge approach for high-performance browser apps. This is the same architecture pattern emerging across professional creative tools moving to the web.
- **Local-first architecture:** Uses the File System Access API so files never leave the user's machine. No upload/download cycle, no cloud dependency, no storage limits. This is a significant differentiator vs. Kapwing, Clipchamp, or other browser editors that require cloud processing.
- **Feature set covers the essentials:** Multi-track timeline (unlimited video/audio tracks), keyframe animation with bezier curves, real-time GPU-computed effects (brightness, contrast, saturation, blur, hue rotation), cross-transitions, linked clips.
- **Zero-install removes friction:** No download, no plugin, no account required to start editing. This makes it useful for quick edits on machines where you can't install software (client machines, Chromebooks, locked-down corporate devices).
- **Limitation to watch:** WebGPU browser support is still not universal (Safari lagging, older browsers excluded). Performance claims need real-world validation with longer timelines and higher resolution footage.