App

Small tools I build for my own CG work — the “Opt” series.

OptImageEditor

Windows desktop

Available — free download (Windows installer)

A lightweight image viewer & editor for PSD / PNG / JPG / WebP / EXR / HDR, built around the features I actually use in production, with local AI (ComfyUI) integration.

PSD layers: view, edit and save
Selections, layer masks, painting
Crop & rotate (smart objects stay unrasterized)
ComfyUI integration: background removal, instruction-based editing

Requirements: Windows 10 / 11 (64-bit), WebView2 (built into Windows 11)
First install: The installer is not code-signed, so SmartScreen shows a warning. Click “More info” → “Run anyway” (詳細情報 → 実行).
Updates: The app checks for updates at startup and shows “Update x.y.z” in the toolbar.
ComfyUI: Optional. Requires a local ComfyUI; --enable-cors-header is not needed.
License: Installer: EULA. Source code: PolyForm Noncommercial 1.0.0.

Download ↗ GitHub ↗ EULA ↗

OptPdfEditor

Web (runs in your browser)

In development — web version coming soon

Browser-only PDF tools. No install, and your files never leave the browser.

Merge PDFs, images and text into one PDF
Page editing: delete, rotate, reorder, extract, split, insert/replace
zip → PDF (text embedded with fonts, searchable)

GitHub ↗

Source code is released under the PolyForm Noncommercial License 1.0.0. For commercial licensing, contact info@oputo.com.