Trevni: Invert Photo Negatives

Trevni is a fast, precise tool for converting photo negatives into vivid, true-to-life images. Turn color and black-and-white film scans into positives with one tap, then fine-tune color balance, curves, exposure, and white balance. Automatic orange mask handling delivers accurate tones without complex editing. Batch processing, reusable presets, and before-after compare streamline film archiving and sharing. Works offline, supports RAW and high-resolution exports, and integrates smoothly into photo and productivity workflows, ideal for film scanning, photo negative inversion, color correction, and batch processing on mobile.

1. Download and open Trevni, then grant access to Photos and Camera. 2. Import a negative from your gallery or scan one with the camera, and choose color or black and white. 3. Tap Invert for an instant positive, then adjust color balance, curves, exposure, and white balance as needed. 4. Apply a preset or save your own settings, and select multiple images to batch process for consistent results. 5. Export as JPEG, PNG, or TIFF in full resolution, then share or back up to your cloud. Optional sign in to sync presets across devices.