Slink

Slink is a self-hosted, open-source image sharing platform that lets teams and individuals upload, manage, and share images from their own instance. It pairs a Symfony backend with a SvelteKit frontend and is distributed with Docker images and a demo instance for evaluation.

Key Features

• Multi-format image uploads with automatic processing (PNG, JPG, WEBP, SVG, BMP, ICO, GIF, AVIF, HEIC, TIFF) and format conversions where required.
• Multi-file upload UI with per-file progress and upload history (list and grid views).
• Hierarchical (nested) tags and search/filtering for organized image discovery.
• Image deduplication to prevent duplicate storage and user-facing notifications on duplicates.
• Shareable/customizable image links, URL shortening for images, and ShareX integration for automated uploads.
• Role-based authentication, optional user approval workflow, admin dashboard with analytics, notifications, bookmarking, and public gallery browsing.
• Docker-ready deployment with docker run / docker-compose examples; supports local storage, SMB shares, and S3-compatible backends.

Use Cases

• Host and share project screenshots, portfolio images, or documentation assets without relying on third-party image hosts.
• Provide a team-facing image upload endpoint (ShareX/API key integration) for automated capture and sharing workflows.
• Public or community galleries for artists or small communities with moderation and bookmarking features.

Limitations and Considerations

• Public API exists but is not fully documented; integrations may require reading source code or opening issues for guidance.
• HEIC and TIFF images may be converted to JPG for compatibility, which can change metadata and image fidelity.
• Advanced production concerns (CDN integration, multi-node database scaling) are listed as upcoming or optional features; plan infrastructure accordingly for large-scale usage.

Slink provides a pragmatic, developer-friendly way to self-host image sharing with a modern Symfony + SvelteKit stack and container-first deployment options. It is suitable for single-server homelabs, small teams, and anyone who wants control over image hosting and sharing policies.