DropJPG

A tiny macOS menu bar app that converts images to JPG. Drag photos or folders onto it, type a name, and every image is converted to ~/Desktop/<name>/<name>_001.jpg, <name>_002.jpg, … — with optional resizing.

🌐 Website: eternaxcode.github.io/dropjpg · ⬇ Download latest

한국어 안내는 아래 설치 방법 참고.

Features

• 🖼️ Convert anything to JPG — JPEG, PNG, GIF, TIFF, WebP, and HEIC/HEIF (Apple photos) via the built-in sips engine. No dependencies.
• 📂 Drag & drop files or whole folders (recurses into subfolders).
• 🔢 Auto rename to <name>_001.jpg, <name>_002.jpg, …
• 📐 Optional resize — set a target width in pixels; aspect ratio is preserved.
• 🗂️ Output to ~/Desktop/<name>/ — originals are never touched (copy, not move).
• 📋 Non-image files are copied through with the same numbering.
• 🧭 Lives in the menu bar (no Dock icon). Drop window stays on top.

Install

1. Download DropJPG.dmg from the latest release.

2. Open the DMG and drag DropJPG.app into Applications.

3. Important — first launch only. DropJPG is not signed with an Apple Developer certificate, so macOS Gatekeeper blocks it by default. Remove the quarantine flag with one of these:

   • Easy: double-click 먼저 실행 - 설치도우미.command inside the DMG, or
   • Terminal:

     xattr -dr com.apple.quarantine /Applications/DropJPG.app

4. Launch DropJPG. A camera/convert icon appears in the menu bar.

Why the extra step? An Apple Developer account ($99/yr) is required to sign & notarize apps so they open with a normal double-click. This project is free and unsigned, so the one-time command above is the trade-off. The command only removes the "downloaded from the internet" quarantine attribute — nothing else.

Usage

1. Click the menu bar icon → 사진 변환… (Convert).
2. Drag files/folders into the drop zone. Dropped names appear in the list.
3. Type a folder name (becomes the Desktop folder + filename prefix).
4. (Optional) Type a target width in pixels to resize.
5. Click 변환 시작 (Start). The result folder opens in Finder.

설치 방법

1. 최신 릴리스에서 DropJPG.dmg 다운로드.
2. DMG 열고 DropJPG.app 을 Applications 로 드래그.
3. 최초 1회만 — 개발자 인증서가 없어 macOS가 실행을 막습니다. 둘 중 하나:
   • DMG 안의 먼저 실행 - 설치도우미.command 더블클릭, 또는
   • 터미널에 xattr -dr com.apple.quarantine /Applications/DropJPG.app 입력.
4. DropJPG 실행 → 메뉴바에 아이콘 표시 (Dock에는 안 보임).

Build from source

Requires Xcode Command Line Tools (swiftc). No other dependencies.

./build.sh        # → DropJPG.app
./make_dmg.sh     # → dist/DropJPG.dmg

Icons are generated from Sources/gen_icons.swift (CoreGraphics, no design tools).

Releasing

Releases are automated. Bump the version and push a tag:

./release.sh 1.1     # bumps VERSION, commits, tags v1.1, pushes

The Release GitHub Actions workflow then builds the DMG on a macOS runner and publishes a GitHub Release with the asset attached. The single source of truth for the version is the VERSION file.

Support / 후원

DropJPG is free and open source. If it saved you some time, you can buy me a coffee ☕

무료 오픈소스입니다. 유용했다면 커피 한 잔 부탁드려요 → https://ko-fi.com/eternaxcode

License

MIT — see LICENSE.