i-love-dark-mood
High-performance PDF dark mode converter preserving selectable text layers
Core Features Implemented
- True Vector Stream Color Inversion: Rewrites PDF RGB/CMYK stream operators without converting documents to raster images, preserving 100% vector sharpness
- Selectable & Searchable Text Preservation: Retains full text layer integrity, allowing copying, highlighting, and search indexing after inversion
- Zero File Bloat Transformation: Maintains identical file size to original documents (unlike raster converters that inflate files up to 10x)
- Client-Side Drag & Drop Processing: Fully local processing capability with zero server retention for complete document privacy
System Architecture
- Low-level PDF stream parser directly manipulating raw PDF color dictionaries and content streams
- Non-destructive color transformation avoiding vector-to-bitmap rasterization overhead
- Rust-compiled WebAssembly and Python backend pipeline optimizing multi-hundred-page processing in sub-second intervals
- Dockerized microservice architecture with stream buffering for handling large corporate manuals
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