Photo Catalog Studio

Photo Catalog Studio is a native desktop photo management, binary metadata
inspection, non-destructive lighting/color development, and batch image
processing suite for Linux.

A lightweight Linux alternative to ACDSee Photo Studio for fast photo cataloging, SQLite rating/tagging, non-destructive lighting/color development, and batch processing. Disclaimer: Independent open-source project, not affiliated with or endorsed by ACD Systems International Inc.

KEY FEATURES:
• Real Photo Catalog & SQLite3 Database: Scans real Linux directories and indexes Star Ratings (1..5), Color Labels, Category Tags, Dimensions, Aspect Ratio, Color Depth, File Size, 64-bit Perceptual dHash, and SHA-256 checksums in SQLite3.
• Binary EXIF & PNG Chunk Inspector + Live Histogram: Parses JPEG APP1 EXIF TIFF IFD tags and PNG IHDR/pHYs/tEXt chunks directly from file bytes alongside a thumbnail contact sheet and 256-bin RGB/Luminance histogram.
• Non-Destructive Develop Module: Real-time QImage pixel processing with Shadows/Midtones/Highlights tone curve LUTs, White Balance Temperature/Tint, Vibrance/Saturation, 3x3 Unsharp Mask, interactive Before/After split preview, and PNG/JPEG EXIF export.
• High-Speed Batch Processor & Contact Sheet Generator: Batch resize, text watermark, sequential rename, format conversion (PNG/JPG/BMP), and multi-photo proof contact sheet PNG rendering with per-image millisecond timings and SHA-256 verification.

SUPPORT & DONATE:
• Created by Thanh Nguyen — Support ongoing development: https://buymeacoffee.com/thanhnv128b