V1.0.0

🎉 Image Optimizer v1.0.0

We're excited to announce the first public release of Image Optimizer! 🎉

This initial release provides a simple, cross-platform desktop application for batch image optimization with real-time progress tracking, multiple compression modes, and an intuitive before/after preview experience.

✨ Highlights

• Batch scan local folders for PNG, JPG, BMP, and TIFF images.

• Drag & drop files or browse to upload individual images.

• Three optimization modes:

  • Standard (lossy)
  • Lossless
  • Resize-only

• Preserve specific colors during PNG quantization with hex color protection.

• Optional Floyd–Steinberg dithering for pngquant.

• Interactive side-by-side and overlay comparison before and after compression.

• Live optimization logs with real-time progress updates.

• Download all optimized images as a single ZIP archive.

• Automatic detection of pngquant and oxipng binaries.

• Cross-platform support for Windows, macOS, and Linux, with Windows binaries bundled for out-of-the-box use.

🔧 Packaging & Deployment

• Added a PyInstaller build script for generating standalone Windows executables.
• Included application icons, favicon, and README banner assets.
• Improved compatibility with frozen PyInstaller builds using proper sys._MEIPASS path resolution.

🐛 Stability & Security

This release also includes numerous reliability and security improvements:

• Fixed path traversal vulnerabilities in file-serving endpoints.
• Fixed XSS vulnerabilities in file name rendering on preview and results pages.
• Eliminated a race condition that could reset application state during active optimization.
• Fixed background task failures that could silently hide optimizer errors.
• Added automatic busy-port detection and fallback.
• Prevented tkinter crashes in headless environments.
• Fixed preview support for uploaded (non-scanned) images.
• Corrected log color inconsistencies between the backend and frontend.