---
title: "Changelog"
url: https://phatdev.net/en/docs/pixgamma/changelog
lang: en
updated: 2026-10-22
alternate:
  vi: https://phatdev.net/docs/pixgamma/changelog
markdown: https://phatdev.net/en/docs/pixgamma/changelog.md
---

# Changelog

Part of the doc set: [PixGamma](https://phatdev.net/en/docs/pixgamma.md)

> Notable changes by version. Latest: 0.2.1 (2026-10-20).

Notable changes by version, newest first. The full technical log is the repository's `CHANGELOG.md`.

## Unreleased

### New
- **New interface, Light and Dark**: the photo fills the window, a small dock holds only mode, scale and Xem trước (preview); a filmstrip sits below and the tuning column on the right collapses. **Fit** shows the whole photo with the preview area outlined; **100%** and **200%** compare before/after at real pixels, split or side by side. Two export buttons: this photo, or all of them. Follows the system theme, or pick Light / Dark from the View menu.
- **PixGamma Photo v2 is the default photo model**: Photo v1 trained further with a light GAN. DISTS 0.164 vs 0.165 on the benchmark, 0.170 vs 0.183 on sharp photos. Text regions keep Photo v1, so the GAN never draws letter strokes.
- **Recover understands the scene**: Apple Vision describes the photo (for example "parrot, detailed feathers") for the prompt; before, feathers could come out as fabric. Resemblance defaults to 85 for animals, plants and portraits and 40 otherwise; the app has a switch to set it by hand.
- **Safety lock for Recover**: signs, maps and text-heavy photos are capped at creativity 0.3 with the structure lock on; product photos at 0.45. Text is protected as whole paragraphs.

### Fixes
- **Face restoration coloured black-and-white photos**: a sepia 1910 portrait got blue eyes and pink skin. Monochrome photos now keep their own tone in the face.

### Rename
- **Pixora is now PixGamma** (the Pixora name is used by several other AI photo apps), with a new lens-and-aperture logo. The app is `PixGamma.app`, the command is `pixgamma`, and the photo model is PixGamma Photo v1.
- Old installs keep updating: releases also carry `Pixora-<version>.dmg` for 0.2.1 apps, and the new updater renames `Pixora.app` to `PixGamma.app`. `Application Support/Pixora` moves to `PixGamma`; the `pixora` command and `PIXORA_*` variables keep working.

## 0.2.1 — 2026-10-20

### Fixes
- **Soft, wobbly keycap letters** (for example Y): text regions now run through PixGamma Photo v1 instead of the old text model, and the small-text fade is gone. OCR 89.2% → 91.1%, PSNR 29.2 → 30.5 dB, sharpness 0.58 → 0.69; +1.2 dB on a real keyboard photo.
- **Slow text pass**: 2 flip/rotation passes instead of 8. A 480 px keyboard to 4x went from 37 s to 12 s and reads better.
- **Recover redrew keycap letters** (A S D F G H J became A S D Y G N I): Recover now finds text like the other modes; color keyboard photos keep every key.
- **Recover killed by macOS on large images**: each tile's Core ML outputs are freed right away. 1440 px needs 8.5 GB instead of 28.6 GB; 3436 × 5194 finishes with 10.2 GB.

### Checked
- Every mode, 1x–16x, `--width`/`--height`, every slider, gpu/ane/all/cpu, on 1 px, 48 px, 2000 × 60 strips, 3000 × 2000, grayscale, CMYK, transparent, palette, TIFF, WebP and HEIC inputs.

## 0.2.0 — 2026-10-20

### Install
- **DMG installer** with the CLI and every upscaling model; Recover models in 2 zip files.
- **Auto-update** from GitHub Releases: daily check, DMG download, SHA-256, bundle id and version checks, app swap with rollback and relaunch. Read-only GitHub token kept in the Keychain.

### New
- **PixGamma Photo v1**, our own photo model (DAT2 fine-tuned from 4xBHI_dat2_real): PSNR 30.5 dB vs 29.0 dB, DISTS 0.165 vs 0.173, no color drift.
- **Recover mode**: Realistic Vision 5.1 + ControlNet Tile on Core ML, seamless MultiDiffusion, a dedicated eye pass, regional prompts, Creativity and Resemblance sliders.
- **Vietnamese text recognition** (`vi-VT`); text read is written to the report.
- **Dedicated text model** (RealPLKSR) trained in three rounds on synthetic Vietnamese and English text.
- **Dehalo** around high-contrast edges.
- Synthetic text dataset, per-line and per-size text benchmark.

### Fixes
- Auto picked Art & CGI for white-background product photos (22/22 Lenovo photos now use the photo model).
- Black laptop details looked lighter and hazy after upscaling: Auto no longer sharpens or adds contrast or grain on its own.
- Soft, haloed letters after text protection; broken blocks at the end of small text lines; the CLI could not find models when called from PATH; replacing a model with the same name kept the old compiled one.

## 0.1.0 — 2026-10-18

- Three-pane SwiftUI app: drag-and-drop image list, preview with a before/after slider and 3 zoom levels, adjustments panel.
- Five Core ML modes: Auto, Standard, High Fidelity, Art & CGI, Low Resolution.
- Realistic (CodeFormer) and Creative (GFPGAN) face restoration.
- Color preservation, text protection with Apple Vision, context-aware tiling.
- `pixgamma` CLI and local HTTP API.