Bring macOS “Quick Look” feature to Windows
This report summarizes scanner evidence for QL-Win/QuickLook, a C# project with 25,257 GitHub stars. SynthScan examined 71,569 lines of code across 473 source files, recording 586 pattern matches distributed across 9 syntactic categories. The legacy adjusted pattern signal is 11.6 (Moderate pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Can maintainers explain intent, assumptions, and trade-offs? 554 finding(s).
Are imports declared and package/API names verified? 28 finding(s).
Are wrappers, guards, and repeated structures necessary? 5 finding(s).
Which changes need focused human review? 586 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 586 distinct pattern matches across 9 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | .appveyor.yml | 41 | # deploy: | COMMENT |
| LOW | QuickLook/App.xaml.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/ViewerWindow.xaml.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/TrayIconManager.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/ViewWindowManager.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/PipeServerManager.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/FocusMonitor.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/ViewerWindow.Properties.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/ViewerWindow.Actions.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/KeystrokeDispatcher.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/PluginManager.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Plugin/InfoPanel/WindowsThumbnailProvider.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Plugin/InfoPanel/FileHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Plugin/InfoPanel/Plugin.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …kLook/Converters/BooleanToVisibilityHiddenConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …ok/Converters/WindowStateNormalToThicknessConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …Converters/WindowStateMaximizedToThicknessConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Converters/BooleanToKeyTimeConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Converters/ScaledValueConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …ok/Converters/BooleanToVisibilityCollapsedConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/WebClientEx.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/GlassLayer/GaussianBlurEffect.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/GlassLayer/GlassLayer.xaml.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …Look/Controls/GlassLayer/ElementCoordinateConverter.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/SpinIcon.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …ntrols/BusyDecorator/VisualTargetPresentationSource.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/BusyDecorator.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/ControlExtensions.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/ControlExtensions.cs | 21 | using System.Windows.Media; | COMMENT |
| LOW | …ickLook/Controls/BusyDecorator/BackgroundVisualHost.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/ISpinable.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Controls/BusyDecorator/ISpinable.cs | 21 | /// Represents a spinable control | COMMENT |
| LOW | …ok/Controls/LeftContextMenu/LeftContextMenuBehavior.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Properties/AssemblyInfo.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Properties/AssemblyInfo.cs | 41 | //<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file | COMMENT |
| LOW | QuickLook/Properties/AssemblyInfo.cs | 61 | // Minor Version | COMMENT |
| LOW | QuickLook/Properties/Resources.Designer.cs | 1 | //------------------------------------------------------------------------------ | COMMENT |
| LOW | QuickLook/NativeMethods/QuickLook.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/SHCore.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/User32.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/UxTheme.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/WMI.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/ShellLink.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/NativeMethods/ShellLink.cs | 61 | [Flags] | COMMENT |
| LOW | QuickLook/NativeMethods/ShellLink.cs | 81 | /// whether or not the link object has changed. | COMMENT |
| LOW | QuickLook/Helpers/Updater.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/AutoStartupHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/MessageBoxPatcher.cs | 1 | // Copyright © 2024 KamilDev | COMMENT |
| LOW | QuickLook/Helpers/ExtensionFilterHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/ExtensionFilterHelper.cs | 21 | using System.IO; | COMMENT |
| LOW | QuickLook/Helpers/GlobalKeyboardHook.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/SystemHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/PluginIconRegistrationHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/ShareHelper.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook/Helpers/CommandLineParser.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | …ommon/ExtensionMethods/WindowInteropHelperExtension.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook.Common/ExtensionMethods/BitmapExtensions.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook.Common/ExtensionMethods/TypeExtensions.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| LOW | QuickLook.Common/ExtensionMethods/FileExtensions.cs | 1 | // Copyright © 2017-2026 QL-Win Contributors | COMMENT |
| 487 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | QuickLook/App.xaml.cs | 200 | Wpf.Ui.Violeta.Controls.ExceptionReport.Show(e.Exception); | STRING |
| CRITICAL | QuickLook/App.xaml.cs | 224 | Wpf.Ui.Violeta.Controls.ExceptionReport.Show(ex); | STRING |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 769 | /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String)</c>. | COMMENT |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 790 | /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String)</c>. | COMMENT |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 812 | /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String, String)</c>. | COMMENT |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 852 | /// <c>System.Web.Mvc.Html.RenderPartialExtensions.RenderPartial(HtmlHelper, String)</c>. | COMMENT |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 870 | /// <c>System.Web.Mvc.Html.DisplayExtensions.DisplayForModel(HtmlHelper, String)</c>. | COMMENT |
| CRITICAL | QuickLook.Common/Properties/Annotations.cs | 880 | /// <c>System.Web.Mvc.Html.EditorExtensions.EditorForModel(HtmlHelper, String)</c>. | COMMENT |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1756 | styles_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle(); | CODE |
| CRITICAL⚡ | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1773 | Shape = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeArgs(); | CODE |
| CRITICAL⚡ | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1780 | Rect = new global::Com.Opensource.Svga.ShapeEntity.Types.RectArgs(); | CODE |
| CRITICAL⚡ | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1787 | Ellipse = new global::Com.Opensource.Svga.ShapeEntity.Types.EllipseArgs(); | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1814 | global::Com.Opensource.Svga.ShapeEntity.Types.ShapeArgs subBuilder = new global::Com.Opensou | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1825 | global::Com.Opensource.Svga.ShapeEntity.Types.RectArgs subBuilder = new global::Com.Opensour | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1836 | global::Com.Opensource.Svga.ShapeEntity.Types.EllipseArgs subBuilder = new global::Com.Opens | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 1849 | styles_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle(); | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 2978 | fill_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBAColor(); | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 2986 | stroke_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBAColor(); | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 3036 | fill_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBAC | CODE |
| CRITICAL | …ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs | 3045 | stroke_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGB | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | QuickLook/Properties/Resources.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …ook.Plugin.VideoViewer/Properties/Resource.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | …ckLook.Plugin.ImageViewer/Webview/Svg/SvgImagePanel.cs | 0 | access-control-allow-origin: * content-type: {mimetypes.getmimetype()} | STRING |
| HIGH | …ckLook.Plugin.ImageViewer/Webview/Tgs/TgsImagePanel.cs | 0 | access-control-allow-origin: * content-type: {mimetypes.getmimetype()} | STRING |
| HIGH | ….Plugin.ImageViewer/Webview/Lottie/LottieImagePanel.cs | 0 | access-control-allow-origin: * content-type: {mimetypes.getmimetype()} | STRING |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …ckLook.Plugin.ArchiveViewer/ArchiveFile/IconManager.cs | 143 | Shell32.SHGetFileInfo("placeholder", | CODE |
| LOW⚡ | …uickLook.Plugin.MarkdownViewer/Resources/rst2html.html | 632 | `,1;if(Pn>1e5&&Pn>Q.index*3)throw new Error("potential infinite loop, way more iterations than matches");return Se+=fe,f | CODE |
| LOW⚡ | …uickLook.Plugin.MarkdownViewer/Resources/rst2html.html | 633 | `},E]}}return fa=i,fa}var pa,Nc;function Kg(){if(Nc)return pa;Nc=1;const t=h=>({IMPORTANT:{scope:"meta",begin:"!importan | CODE |
| LOW⚡ | …uickLook.Plugin.MarkdownViewer/Resources/rst2html.html | 634 | ]`,T={scope:"string",variants:[p,h,b,v]},k={scope:"number",variants:[{begin:"\\b0[bB][01]+(?:_[01]+)*\\b"},{begin:"\\b0[ | CODE |
| LOW⚡ | …ickLook.Plugin.MarkdownViewer/Resources/adoc2html.html | 889 | `,1;if(un>1e5&&un>M.index*3)throw new Error("potential infinite loop, way more iterations than matches");return nt+=H,H. | CODE |
| LOW⚡ | …ickLook.Plugin.MarkdownViewer/Resources/adoc2html.html | 890 | `},p]}}return zn=n,zn}var qn,Jr;function Oh(){if(Jr)return qn;Jr=1;const r=u=>({IMPORTANT:{scope:"meta",begin:"!importan | CODE |
| LOW⚡ | …ickLook.Plugin.MarkdownViewer/Resources/adoc2html.html | 891 | ]`,m={scope:"string",variants:[d,u,h,f]},g={scope:"number",variants:[{begin:"\\b0[bB][01]+(?:_[01]+)*\\b"},{begin:"\\b0[ | CODE |
| LOW | …MarkdownViewer/Resources/highlight.js/highlight.min.js | 316 | }),re=["a","abbr","address","article","aside","audio","b","blockquote","body","button","canvas","caption","cite","co | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | QuickLook.Native/QuickLook.Native32/IDMan.cpp | 28 | // Step 1: Get the selected item name from the IDM list via UIAutomation | COMMENT |
| LOW⚡ | QuickLook.Native/QuickLook.Native32/IDMan.cpp | 33 | // Step 2: Resolve the file path from the IDM registry | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW⚡ | QuickLook.Native/QuickLook.Native32/IDMan.cpp | 28 | // Step 1: Get the selected item name from the IDM list via UIAutomation | COMMENT |
| LOW⚡ | QuickLook.Native/QuickLook.Native32/IDMan.cpp | 33 | // Step 2: Resolve the file path from the IDM registry | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | …kLook.Plugin.ArchiveViewer/DSStore/DSStoreExtractor.cs | 43 | // ── Internal allocator / block types ──────────────────────────────────── | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …gin.ImageViewer/Resources/Web/lottie-web/lottie.min.js | 1 | "undefined"!=typeof document&&"undefined"!=typeof navigator&&function(t,e){"object"==typeof exports&&"undefined"!=typeof | CODE |