Feature
A Screen Recorder With Local Storage and Local Processing
If you are looking for a screen recorder with local storage, the important detail is where both the video file and its metadata live. Here, capture, processing, editing, and export all stay in the browser, with recordings stored on-device using IndexedDB and the Origin Private File System.
Free to use, no account required, and no watermark on exports.
In this article
Quick take
Video files stored in OPFS, metadata in IndexedDB — both browser-managed
WASM-powered post-processing: waveforms, thumbnails, timeline analysis
Draft recovery: interrupted recordings resume automatically
Storage architecture
Video blobs go into the Origin Private File System (OPFS), a performant browser-managed filesystem. Metadata — title, duration, waveform data, thumbnails, tags — lives in IndexedDB. Both are sandboxed to this domain and persist across sessions.
The recorder also uses OPFS for draft persistence during recording, so even if the browser crashes, the partial recording can be recovered.
WebAssembly processing
After recording, a WASM module runs in a Web Worker to generate waveform data and extract thumbnail frames. This is the same kind of processing a cloud service would do on their servers — but it runs on your CPU instead.
Processing progress is shown in the dashboard. If you close the tab before it finishes, it resumes automatically next time.
Storage management
Browser storage quotas depend on available disk space and browser policy. You can monitor space usage in the settings page. Recordings can be exported to regular files and deleted from browser storage at any time.
Why local storage matters
“Screen recorder with local storage” is really a control question. People want to know whether the file lands on their own machine first, or whether it is routed into a hosted media library by default.
This workflow is built around the file staying local first, with export or later sharing as a separate decision.