Sitecar (for Papra)

Sitecar is a lightweight, unofficial companion ("sidecar") for your self-hosted Papra instance (papra-hq/papra). This app has no affiliation with papra-hq and is developed independently. Connect • Store your Papra server URL and API key (encrypted on-device) • No OAuth, no third-party login — just your own server Scan & upload • Scan multi-page documents with automatic edge detection and perspective correction (Google ML Kit, fully on-device) • Merge pages into a single PDF, optionally with an invisible OCR text layer for full-text search — can be disabled if your Papra instance already runs its own OCR • Choose the target organization, customize the filename (placeholders for date, time, organization, sender, counter) • "Share to Sitecar": send images and PDFs from other apps (email attachments, gallery, invoicing apps) straight to Sitecar via the Android share sheet Manage documents • Browse existing documents with thumbnail previews, full-text search, and sorting • Rename, delete (trash), restore, or permanently remove documents • Create and edit tags, assign them to documents, and filter by tag • Multi-select for bulk delete or tag editing Smart suggestions (optional, on-device) • Rule-based detection of tags, document date, and sender while uploading • Optional extra AI assistance via Gemini Nano (Android AICore) — runs fully on-device, no data leaves your device for this • Duplicate warning based on a local perceptual-hash comparison with your recent uploads Privacy • No accounts, no tracking, no ads • Your server URL and API key only ever go to your own Papra server • Completely free Requirement: a reachable, self-hosted Papra instance with an API key (Papra web UI → Settings → API Keys, "documents:create" permission).