Privacy Policy
Last updated: August 2026
1. Zero-Upload Architecture
At KlangBild, your privacy is our primary engineering principle. When you select or drag and drop an MP3, WAV, FLAC, or image file into our converter, your files are never uploaded to any remote server or cloud database.
All audio decoding, frequency spectrum analysis, visual waveform generation, and video encoding occur 100% in your device's memory using browser-native WebAudio and HTML5 Canvas APIs.
2. Information We Do Not Collect
- We do not record, store, or transmit your audio files.
- We do not store your custom background cover images.
- We do not collect your song titles or artist names.
- We do not track audio metadata or ID3 tags.
3. Local Storage Preferences
We use browser localStorage solely to remember your chosen theme mode (dark or light) and last selected language preference. This data stays exclusively in your browser.
4. Contact Submissions
If you voluntarily send a message through our Contact form, your name, email address, and message are used solely to reply to your inquiry.
5. Data Protection Officer
For privacy inquiries or data rights requests under GDPR/CCPA, please email support@klangbild.app.