nivlacfix

Nivlacfix

Offline Windows app for lens correction — distortion, vignetting, and chromatic aberration — using the Lensfun database (same family as Darktable).

Website: nivla.app
Download: Latest release

Features

• Auto-detect camera + lens from EXIF
• Before/after compare wipe
• Auto (Lensfun) and manual correction modes
• Batch export for folders
• RAW, JPEG, PNG, TIFF, WebP support
• Auto-updates Lensfun camera/lens database every 24h
• 5 languages: English, 繁體中文, 简体中文, 日本語, 한국어

Quick start

1. Download Nivlacfix.exe from Releases
2. Run the app (Windows may show SmartScreen — click More info → Run anyway)
3. Open a photo or drop a file onto the window
4. Click Auto-detect Lens, adjust if needed, then Export Corrected

Windows security note

The app is not yet code-signed. Windows may show "Windows protected your PC" for new downloads. This is normal for unsigned indie software — click More info → Run anyway.