KnifeLemon · KnifeLemon · Oct 1, 2026 · Oct 1, 2026 · Oct 1, 2026 · Oct 1, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -63,6 +63,11 @@ jobs:
       - name: Test
         run: dotnet test Filee.slnx --no-build -c Release --logger "trx" --results-directory TestResults
 
+      # Compiles installer/Filee.iss against a stub app without compression: catches script errors in about a minute.
+      - name: Check installer script
+        shell: pwsh
+        run: ./build/build-installer.ps1 -CheckOnly
+
       - name: Upload UI screenshots
         if: always()
         uses: actions/upload-artifact@v4

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -1,11 +1,12 @@
 # Builds the Windows installer and publishes it to GitHub Releases.
 # Trigger: push a tag like v1.0.0  (git tag v1.0.0 && git push origin v1.0.0)
 #
-# Output (Velopack): Filee-<version>-win-Setup.exe, Filee-<version>-win-Portable.zip, and the update feed
-# (releases.win.json + full/delta .nupkg) the next release builds its delta package from.
+# Output (build/build-installer.ps1): Filee-<version>-win-Setup.exe (Inno Setup, installer/Filee.iss),
+# Filee-<version>-win-Portable.zip and Filee-<version>-SHA256SUMS.txt.
 # Release notes are generated by GitHub from the pull requests merged since the previous release, grouped by label
 # (.github/release.yml), with their authors and new contributors.
-# Large engines are not in the installer; the app offers them on first run and in Settings > Engines.
+# Large engines are not in the installer; its engine page (or the app, on first run and in Settings > Engines)
+# downloads them.
 name: Release
 
 on:
@@ -18,8 +19,6 @@ permissions:
 jobs:
   windows:
     runs-on: windows-latest
-    env:
-      PUBLISH_DIR: publish/win-x64
     steps:
       - uses: actions/checkout@v4
 
@@ -58,61 +57,17 @@ jobs:
       - name: Test
         run: dotnet test Filee.slnx -c Release
 
-      - name: Publish
-        run: >
-          dotnet publish src/Filee.App/Filee.App.csproj -c Release -r win-x64 --self-contained
-          -p:Version=${{ steps.version.outputs.value }}
-          -p:PublishReadyToRun=true
-          -o ${{ env.PUBLISH_DIR }}
-
-      # Must sit next to Filee.exe: the package's external location is the install folder.
-      - name: Add Explorer menu extension
-        shell: pwsh
-        run: Copy-Item build/.cache/explorer-menu/FileeExplorerMenu.dll, build/.cache/explorer-menu/FileeExplorerMenu.msix "${{ env.PUBLISH_DIR }}"
-
-      # Only the small rhwp is bundled. LibreOffice (+ H2Orestart, Java) and Pandoc are large and are downloaded by
-      # the app when the user picks them (first-run setup or Settings > Engines), see engines.json.
-      - name: Bundle conversion engines (rhwp, 7-Zip)
-        shell: pwsh
-        run: ./build/fetch-engines.ps1 -Only rhwp,7zip -Destination "${{ env.PUBLISH_DIR }}/engines"
-
-      - name: Install Velopack CLI
-        run: dotnet tool install -g vpk
-
-      - name: Download previous release (for delta updates)
-        run: vpk download github --repoUrl ${{ github.server_url }}/${{ github.repository }} --token ${{ secrets.GITHUB_TOKEN }} -o Releases
-        continue-on-error: true
-
-      - name: Pack
-        run: >
-          vpk pack --packId Filee --packVersion ${{ steps.version.outputs.value }}
-          --packDir ${{ env.PUBLISH_DIR }} --mainExe Filee.exe --packTitle Filee
-          --icon src/Filee.App/Assets/Icons/filee.ico -o Releases
-
-      # People download these two, so their names carry the version. The update feed keeps Velopack's names.
-      - name: Name downloads after the version
+      # Publishes the app (Release, self-contained, ReadyToRun) with the Explorer menu extension and the bundled rhwp
+      # and 7-Zip, then compiles the installer (portable Inno Setup, pinned and verified) and zips the portable copy.
+      - name: Build installer and portable zip
         shell: pwsh
-        run: |
-          $version = '${{ steps.version.outputs.value }}'
-          Get-ChildItem Releases -Filter '*-Setup.exe' | Rename-Item -NewName "Filee-$version-win-Setup.exe"
-          Get-ChildItem Releases -Filter '*-Portable.zip' | Rename-Item -NewName "Filee-$version-win-Portable.zip"
-          Get-ChildItem Releases | Format-Table Name, Length
+        run: ./build/build-installer.ps1 -Version ${{ steps.version.outputs.value }} -Portable
 
       - name: Publish the GitHub release
         shell: pwsh
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           $version = '${{ steps.version.outputs.value }}'
-          # Releases/ also holds the previous version's full package, downloaded only to build the delta: publish this
-          # version's files, and trim the update feed to them so the release lists only what it carries.
-          $feedPath = 'Releases/releases.win.json'
-          $feed = Get-Content $feedPath -Raw | ConvertFrom-Json
-          $feed.Assets = @($feed.Assets | Where-Object Version -eq $version)
-          $feed | ConvertTo-Json -Depth 5 -Compress | Set-Content $feedPath -Encoding utf8 -NoNewline
-          $pattern = "-$([regex]::Escape($version))-"
-          (Get-Content Releases/RELEASES) | Where-Object { $_ -match $pattern } | Set-Content Releases/RELEASES -Encoding utf8BOM
-          $files = Get-ChildItem Releases -File |
-            Where-Object { $_.Name -in 'releases.win.json', 'RELEASES' -or $_.Name -like "Filee-$version-*" } |
-            ForEach-Object FullName
+          $files = Get-ChildItem Releases -File -Filter "Filee-$version-*" | ForEach-Object FullName
           gh release create '${{ github.ref_name }}' --title "Filee $version" --generate-notes --verify-tag @files
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -53,5 +53,13 @@ Read [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) first. In short:
 
 ## Releasing (maintainers)
 
-Push a tag `vX.Y.Z`. `.github/workflows/release.yml` builds, bundles the engines, packs with Velopack and publishes
-the installer and update packages to GitHub Releases.
+Bump `<Version>` in `Directory.Build.props`, merge, then push a tag `vX.Y.Z`. `.github/workflows/release.yml` runs the
+tests and `build/build-installer.ps1 -Portable`: it publishes the app (`-p:FileeRelease=true`, which lets it register
+Explorer and startup entries), adds the Explorer menu extension and the bundled rhwp and 7-Zip, compiles
+`installer/Filee.iss` with a pinned, portable Inno Setup, and uploads `Filee-X.Y.Z-win-Setup.exe`, the portable zip and
+their SHA-256 sums with release notes generated from the merged pull requests.
+
+To try the installer locally run `pwsh build/build-installer.ps1` (output in `Releases/`). Setup needs administrator
+rights; `pwsh build/build-installer.ps1 -CheckOnly` only compiles the script. The installer's engine page and some of
+its texts are generated from `EngineDownloads` and the app's translations (`build/tools/make-installer-engines.cs`);
+its own texts are in the `[CustomMessages]` section of `installer/Filee.iss` (English, Korean, Simplified Chinese).
diff --git a/Directory.Build.props b/Directory.Build.props
@@ -14,7 +14,7 @@
          parameters of a member is fine (CS1573). -->
     <NoWarn>$(NoWarn);CS1591;CS1573</NoWarn>
 
-    <Version>1.1.0</Version>
+    <Version>1.2.0</Version>
     <Product>Filee</Product>
     <Authors>Filee contributors</Authors>
     <Copyright>Copyright (c) Filee contributors</Copyright>

diff --git a/Directory.Packages.props b/Directory.Packages.props
@@ -23,7 +23,6 @@
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.12" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.12" />
     <PackageVersion Include="SharpHook" Version="8.0.0" />
-    <PackageVersion Include="Velopack" Version="1.2.161" />
   </ItemGroup>
 
   <ItemGroup Label="Conversion engines">

diff --git a/README.ko.md b/README.ko.md
@@ -106,15 +106,18 @@
 ## 시작하기
 
 **설치:** [Releases](https://github.com/KnifeLemon/Filee/releases/latest)에서 최신 `Filee-<버전>-win-Setup.exe`를
-받으세요(Windows 10/11, 64비트).
+받아 실행하세요(Windows 10/11, 64비트). 관리자 권한을 한 번 요청하고, 모든 사용자를 위해 Program Files에 설치해요.
+설치 없이 쓰고 싶다면 `Filee-<버전>-win-Portable.zip`을 원하는 곳에 풀고 `Filee.exe`를 실행하면 돼요.
 
 - **자주 쓰는 형식은 설치 파일에 다 들어 있어요.** 이미지, PDF, 워드, 엑셀, 파워포인트, HWP, 전자책, 압축 파일, 글꼴, CAD는
   설치하자마자 변환돼요.
-- **큰 엔진은 골라서 설치해요.** 처음 실행하면 동영상·오디오용 엔진(FFmpeg, 약 100MB)과 드문 형식용 엔진(LibreOffice,
-  calibre, Ghostscript, Pandoc)을 크기와 함께 보여 줘요. 설정 → 변환 엔진에서 다운로드 속도와 남은 시간을 보며 언제든
-  설치하거나 지울 수 있어요.
+- **설치하면서 골라요.** 탐색기 우클릭 메뉴의 “Filee로 변환”(Windows 11에서는 “추가 옵션 표시” 없이 기본 메뉴에도),
+  로그인할 때 시작, 그리고 추가 엔진을 크기를 보며 고를 수 있어요: 동영상·오디오(FFmpeg, 약 100MB)와 드문
+  형식(LibreOffice, calibre, Ghostscript, Pandoc). 고른 엔진은 설치가 끝나고 Filee가 시작되면서 내려받고, 설정 → 변환
+  엔진에서 다운로드 속도와 남은 시간을 보며 언제든 설치하거나 지울 수 있어요.
 - **업데이트는 알려 드려요.** 새 버전이 나오면 메뉴 하단, 알림, 트레이 메뉴에 표시되고 누르면 최신 릴리스 페이지가
-  열려요. 새 설치 파일을 실행하면 설정은 그대로 유지돼요.
+  열려요. 새 설치 파일을 실행하면 Filee를 닫고 업데이트하며, 설정과 엔진은 그대로 유지돼요. 사용자별로 설치된
+  Filee 1.1 이하도 같은 방법으로 넘겨받아요.
 
 macOS 지원은 계획 중입니다.
 

diff --git a/README.md b/README.md
@@ -109,15 +109,20 @@ never uses programs installed on your PC. Optional engines Filee offers to downl
 ## Get started
 
 **Install:** download the latest `Filee-<version>-win-Setup.exe` from
-[Releases](https://github.com/KnifeLemon/Filee/releases/latest) (Windows 10/11, 64-bit).
+[Releases](https://github.com/KnifeLemon/Filee/releases/latest) (Windows 10/11, 64-bit) and run it. Setup asks for
+administrator rights once and installs Filee for all users in Program Files. Prefer no installer? Unzip
+`Filee-<version>-win-Portable.zip` anywhere and run `Filee.exe`.
 
 - **Everything common is in the installer.** Images, PDF, Word, Excel, PowerPoint, HWP, e-books, archives, fonts and
   CAD work right away.
-- **Large engines are optional.** On first start Filee offers the engines for video and audio (FFmpeg, ~100 MB) and for
-  rare formats (LibreOffice, calibre, Ghostscript, Pandoc), each with its size. Install or remove them any time in
-  Settings → Engines, which shows download speed and time left.
+- **Choose in Setup.** Add “Convert with Filee” to the File Explorer menu (on Windows 11 also at the top of the menu,
+  not only under “Show more options”), start Filee when you sign in, and pick optional engines: video and audio
+  (FFmpeg, ~100 MB) and rare formats (LibreOffice, calibre, Ghostscript, Pandoc), each with its size. Filee downloads
+  the chosen engines when Setup starts it; install or remove them any time in Settings → Engines, which shows download
+  speed and time left.
 - **You hear about updates.** When a new release is out, Filee says so at the bottom of the menu, in a notice and in
-  the tray menu, and opens the latest release to download it. Run the new installer; your settings are kept.
+  the tray menu, and opens the latest release to download it. Run the new installer: it closes Filee, updates it and
+  keeps your settings and engines. Filee 1.1 and earlier (installed per user) are taken over the same way.
 
 macOS support is planned.
 
@@ -135,7 +140,9 @@ dotnet run --project src/Filee.App
 dotnet test
 ```
 
-Settings live in `%APPDATA%\Filee`. Debug builds never touch the Explorer context menu or auto-start.
+Settings live in `%APPDATA%\Filee`. Builds from source never touch the Explorer context menu or auto-start.
+`pwsh build/build-installer.ps1` publishes Filee and builds the installer into `Releases/` (it downloads a pinned,
+portable Inno Setup into `build/.cache`; nothing is installed).
 
 | Project | What it is |
 |---|---|

diff --git a/README.zh-CN.md b/README.zh-CN.md
@@ -103,13 +103,16 @@
 ## 快速开始
 
 **安装：** 在 [Releases](https://github.com/KnifeLemon/Filee/releases/latest) 下载最新的
-`Filee-<版本>-win-Setup.exe`（Windows 10/11，64 位）。
+`Filee-<版本>-win-Setup.exe`（Windows 10/11，64 位）并运行。安装程序会请求一次管理员权限，为所有用户安装到
+Program Files。不想安装？把 `Filee-<版本>-win-Portable.zip` 解压到任意位置，运行 `Filee.exe` 即可。
 
 - **常用格式都已包含在安装包中。** 图片、PDF、Word、Excel、PowerPoint、HWP、电子书、压缩包、字体和 CAD 装好即用。
-- **大型引擎按需下载。** 首次启动时会列出视频/音频引擎（FFmpeg，约 100 MB）和少见格式引擎（LibreOffice、calibre、
-  Ghostscript、Pandoc）及其大小；之后可随时在“设置 → 转换引擎”中安装或删除，并显示下载速度和剩余时间。
+- **安装时即可选择。** 在资源管理器右键菜单中添加“用 Filee 转换”（Windows 11 上还可直接显示在主菜单，无需点
+  “显示更多选项”）、登录时启动，并按大小挑选可选引擎：视频/音频（FFmpeg，约 100 MB）和少见格式（LibreOffice、
+  calibre、Ghostscript、Pandoc）。所选引擎会在安装完成、Filee 启动后下载；之后可随时在“设置 → 转换引擎”中安装或
+  删除，并显示下载速度和剩余时间。
 - **有更新会提醒你。** 新版本发布后，Filee 会在菜单底部、通知和托盘菜单中提示，点击即可打开最新发布页面下载。
-  运行新的安装程序即可更新，设置会保留。
+  运行新的安装程序会关闭 Filee 并完成更新，设置和引擎都会保留。按用户安装的 Filee 1.1 及更早版本也会以同样方式接管。
 
 macOS 版本正在计划中。
 

diff --git a/THIRD-PARTY-NOTICES.md b/THIRD-PARTY-NOTICES.md
@@ -10,7 +10,6 @@ Each component remains under its own license.
 | Avalonia UI | MIT | https://github.com/AvaloniaUI/Avalonia |
 | CommunityToolkit.Mvvm | MIT | https://github.com/CommunityToolkit/dotnet |
 | SharpHook (libuiohook) | MIT (libuiohook: GPL-3.0 with linking exception / LGPL-3.0) | https://github.com/TolikPylypchuk/SharpHook |
-| Velopack | MIT | https://github.com/velopack/velopack |
 | Magick.NET / ImageMagick | Apache-2.0 / ImageMagick License | https://github.com/dlemstra/Magick.NET |
 | ImageMagick delegate libraries (libheif, libde265, libwebp, libjpeg-turbo, libpng, libtiff, zlib, …) | Various (LGPL-2.1+, BSD, zlib) | bundled inside Magick.NET |
 | PDFsharp | MIT | https://github.com/empira/PDFsharp |
@@ -74,6 +73,15 @@ Windows headers, without a C runtime. Pieces of these projects that can end up i
 | Zig compiler_rt (compiler support routines) | MIT | https://github.com/ziglang/zig |
 | mingw-w64 Windows headers and import library definitions | Public domain / ZPL-2.1 | https://www.mingw-w64.org |
 
+## Installer
+
+`Filee-<version>-win-Setup.exe` is built with Inno Setup (a build tool, not part of the app); the setup and uninstall
+programs inside it are Inno Setup's.
+
+| Component | License | Project |
+|---|---|---|
+| Inno Setup (Copyright (C) 1997-2026 Jordan Russell, portions Copyright (C) 2000-2026 Martijn Laan) | Inno Setup License | https://jrsoftware.org/isinfo.php |
+
 ## Fonts and icons
 
 | Component | License | Project |