Privacy Policy
1. Core Principle: True Client-Side Computing
Traditional file converter websites work by requiring you to upload your video file to their remote cloud servers. Once received, their servers convert the file and send a download link back to you. This creates severe privacy vulnerabilities, security risks, and bandwidth bottlenecks.
ExtractAudioLocal is engineered differently: We compile industry-standard multimedia libraries (FFmpeg) into WebAssembly (WASM), which runs natively on your computer, tablet, or smartphone’s CPU inside your web browser sandbox. The file you select is mounted into an on-device virtual memory filesystem (WORKERFS). It is decoded, processed, and extracted directly into your device's memory. No byte of your video or audio ever leaves your computer or phone.
2. Data We Do NOT Collect
By architectural design, we never collect, access, or store:
- Your media files: Neither your original video nor the extracted audio track ever leaves your device.
- Your file names: We never log or transmit the names of files you process.
- Personal identifying information: We require no user accounts, passwords, email addresses, names, or payment details.
- File contents or metadata: Audio transcripts, video frames, GPS EXIF tags, creation dates, and metadata are processed purely in local RAM and discarded as soon as you close or refresh the browser tab.
3. Anonymous Operational Analytics
To understand product performance, detect WebAssembly crashes, and optimize browser compatibility, we collect minimal, non-identifying telemetry via lightweight browser beacon requests.
The information collected includes:
| Data Point | Example Value | Purpose |
|---|---|---|
| Event Name | conversion_completed, conversion_failed |
Monitor engine success and error rates |
| File Extension Only | .mp4, .mov, .mkv |
Identify popular container formats (no file names) |
| File Size Bucket | 100-500MB, >1GB |
Identify memory limits without knowing exact size |
| Device Category | desktop, ios, android |
Optimize mobile vs desktop UI and memory thresholds |
| Output Format | mp3, wav, m4a |
Determine audio format preference |
| Error Taxonomy Code | E_NO_AUDIO, E_OOM |
Diagnose browser WebAssembly crashes and codec errors |
This data cannot be linked back to you, your IP address, or your identity. It contains zero file contents or personal identifiers.
4. Local Storage and Client Cache
ExtractAudioLocal uses modern browser client-side storage technologies:
- Service Worker & Cache API: Caches static assets (HTML, CSS, JavaScript, and the WebAssembly engine binaries) on your device. This allows the application to load instantly and operate 100% offline without needing an active internet connection.
- Local Storage: Stores an anonymous pseudorandom identifier (e.g.
ea_uid) to prevent duplicate telemetry counts within a single browser session.
5. Advertising & Third-Party Services
To keep ExtractAudioLocal 100% free with no subscription paywalls, we display advertisements provided by third-party advertising partners (such as Google AdSense).
- Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to our site and/or other sites on the Internet.
- Users may opt out of personalized advertising by visiting Google Ad Settings or by visiting www.aboutads.info.
Crucial Distinction: Advertising providers have access only to standard web visit data (such as browser type and referring URLs). Ad providers have zero access to your device's local file picker, the files you process, or the WebAssembly engine sandbox.
6. GDPR, UK GDPR, and CCPA / CPRA Compliance
Under privacy frameworks including the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA/CPRA):
- Data Minimization by Design: Because we do not collect personal data or store user files, we embody the highest tier of "Privacy by Design and by Default."
- No Sale of Personal Data: ExtractAudioLocal does not sell, rent, or trade personal data or media files.
- Right to Deletion / Access: Because we store no personal accounts or media files on our infrastructure, there is no server-side personal data to view or delete. Clearing your browser cookies and local storage immediately erases any local identifiers stored in your browser.
7. Contact for Privacy Inquiries
If you have questions, feedback, or concerns regarding our privacy architecture or practices, please visit our Contact Page or reach out directly to: