Supported Data Formats
Kosha is engineered to handle a wide array of digital assets. This reference guide details the file specifications, rendering protocols, and security measures applied to data stored within your private ecosystem. All files, regardless of format, are secured using zero-knowledge AES-256 encryption at rest.
Image Processing
Standard high-fidelity image formats are fully supported. Upon upload, Kosha automatically generates lightweight, encrypted thumbnails for UI performance without altering the original binary payload. EXIF metadata (geolocation, camera model) is strictly preserved by default but can be stripped via user privacy settings prior to upload.
Video Streaming
Multimedia viewing is powered by native HTML5 playback frameworks. Kosha handles large media files via HTTP range requests, allowing seamless chunked buffering directly from encrypted storage. Formats requiring proprietary decoding pipelines may require localized download for optimal viewing.
Audio Playback
Audio files bypass intermediate servers and stream directly to the client browser. Our player supports high-bitrate streams up to 320kbps as well as lossless compression standards. Audio waveform visualization is generated locally on the client machine to ensure data privacy.
Documents & Datasets
Enterprise and personal document handling relies on strict browser isolation. To prevent cross-site scripting (XSS) and malicious macro execution, complex document structures are either sandboxed in secure iframes or restricted to raw binary downloads.
Portable Document Format
Natively rendered using secure, client-side WASM sandboxing. Text selection and pagination are fully supported without server-side processing.
Presentations & Slides
Currently restricted to direct download to maintain strict formatting and prevent proprietary font rendering errors.
Spreadsheets & Datasets
Raw text parsing available for open data formats (CSV/JSON). Excel binaries must be downloaded for localized editing.
Plain Text & Markdown
Rendered inline with secure HTML sanitization. Markdown is compiled on the fly with standard GitHub-flavored formatting.
Encrypted Archives
Compressed directories and bundled system formats are treated as contiguous secure blobs. They benefit from dual-layer encryption (the archive's native encryption plus Kosha's platform-level AES-256 encryption).