Repository Analysis

QL-Win/QuickLook

Bring macOS “Quick Look” feature to Windows

12.2 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of QL-Win/QuickLook, a C# project with 24,065 GitHub stars. SynthScan v2.0 examined 66,104 lines of code across 451 source files, recording 561 pattern matches distributed across 9 syntactic categories. The overall adjusted score of 12.2 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

12.2
Adjusted Score
12.2
Raw Score
100%
Time Factor
2026-07-08
Last Push
24.1K
Stars
C#
Language
66.1K
Lines of Code
451
Files
561
Pattern Hits
2026-07-14
Scan Date
0.06
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 20HIGH 5MEDIUM 1LOW 535

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 561 distinct pattern matches across 9 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. 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 diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block528 hits · 524 pts
SeverityFileLineSnippetContext
LOW.appveyor.yml41# deploy:COMMENT
LOWQuickLook/App.xaml.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/ViewerWindow.xaml.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/TrayIconManager.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/ViewWindowManager.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/PipeServerManager.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/FocusMonitor.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/ViewerWindow.Properties.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/ViewerWindow.Actions.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/KeystrokeDispatcher.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/PluginManager.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Plugin/InfoPanel/WindowsThumbnailProvider.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Plugin/InfoPanel/FileHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Plugin/InfoPanel/Plugin.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…kLook/Converters/BooleanToVisibilityHiddenConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…ok/Converters/WindowStateNormalToThicknessConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…Converters/WindowStateMaximizedToThicknessConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Converters/BooleanToKeyTimeConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Converters/ScaledValueConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…ok/Converters/BooleanToVisibilityCollapsedConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/WebClientEx.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/GlassLayer/GaussianBlurEffect.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/GlassLayer/GlassLayer.xaml.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…Look/Controls/GlassLayer/ElementCoordinateConverter.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/SpinIcon.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…ntrols/BusyDecorator/VisualTargetPresentationSource.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/BusyDecorator.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/ControlExtensions.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/ControlExtensions.cs21using System.Windows.Media;COMMENT
LOW…ickLook/Controls/BusyDecorator/BackgroundVisualHost.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/ISpinable.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Controls/BusyDecorator/ISpinable.cs21/// Represents a spinable controlCOMMENT
LOW…ok/Controls/LeftContextMenu/LeftContextMenuBehavior.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Properties/AssemblyInfo.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Properties/AssemblyInfo.cs41//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj fileCOMMENT
LOWQuickLook/Properties/AssemblyInfo.cs61// Minor VersionCOMMENT
LOWQuickLook/Properties/Resources.Designer.cs1//------------------------------------------------------------------------------COMMENT
LOWQuickLook/NativeMethods/QuickLook.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/SHCore.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/User32.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/UxTheme.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/WMI.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/ShellLink.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/NativeMethods/ShellLink.cs61[Flags]COMMENT
LOWQuickLook/NativeMethods/ShellLink.cs81 /// whether or not the link object has changed.COMMENT
LOWQuickLook/Helpers/Updater.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/AutoStartupHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/MessageBoxPatcher.cs1// Copyright © 2024 KamilDevCOMMENT
LOWQuickLook/Helpers/ExtensionFilterHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/ExtensionFilterHelper.cs21using System.IO;COMMENT
LOWQuickLook/Helpers/GlobalKeyboardHook.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/SystemHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/PluginIconRegistrationHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/ShareHelper.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook/Helpers/CommandLineParser.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOW…ommon/ExtensionMethods/WindowInteropHelperExtension.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook.Common/ExtensionMethods/BitmapExtensions.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook.Common/ExtensionMethods/TypeExtensions.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
LOWQuickLook.Common/ExtensionMethods/FileExtensions.cs1// Copyright © 2017-2026 QL-Win ContributorsCOMMENT
468 more matches not shown…
Hallucination Indicators20 hits · 235 pts
SeverityFileLineSnippetContext
CRITICALQuickLook/App.xaml.cs188 Wpf.Ui.Violeta.Controls.ExceptionReport.Show(e.Exception);STRING
CRITICALQuickLook/App.xaml.cs212 Wpf.Ui.Violeta.Controls.ExceptionReport.Show(ex);STRING
CRITICALQuickLook.Common/Properties/Annotations.cs769 /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String)</c>.COMMENT
CRITICALQuickLook.Common/Properties/Annotations.cs790 /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String)</c>.COMMENT
CRITICALQuickLook.Common/Properties/Annotations.cs812 /// <c>System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper, String, String)</c>.COMMENT
CRITICALQuickLook.Common/Properties/Annotations.cs852 /// <c>System.Web.Mvc.Html.RenderPartialExtensions.RenderPartial(HtmlHelper, String)</c>.COMMENT
CRITICALQuickLook.Common/Properties/Annotations.cs870 /// <c>System.Web.Mvc.Html.DisplayExtensions.DisplayForModel(HtmlHelper, String)</c>.COMMENT
CRITICALQuickLook.Common/Properties/Annotations.cs880 /// <c>System.Web.Mvc.Html.EditorExtensions.EditorForModel(HtmlHelper, String)</c>.COMMENT
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1756 styles_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1773 Shape = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeArgs();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1780 Rect = new global::Com.Opensource.Svga.ShapeEntity.Types.RectArgs();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1787 Ellipse = new global::Com.Opensource.Svga.ShapeEntity.Types.EllipseArgs();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1814 global::Com.Opensource.Svga.ShapeEntity.Types.ShapeArgs subBuilder = new global::Com.OpensouCODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1825 global::Com.Opensource.Svga.ShapeEntity.Types.RectArgs subBuilder = new global::Com.OpensourCODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1836 global::Com.Opensource.Svga.ShapeEntity.Types.EllipseArgs subBuilder = new global::Com.OpensCODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs1849 styles_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs2978 fill_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBAColor();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs2986 stroke_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBAColor();CODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs3036 fill_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBACCODE
CRITICAL…ugin/QuickLook.Plugin.ImageViewer/Webview/Svga/Svga.cs3045 stroke_ = new global::Com.Opensource.Svga.ShapeEntity.Types.ShapeStyle.Types.RGBCODE
Synthetic Comment Markers2 hits · 15 pts
SeverityFileLineSnippetContext
HIGHQuickLook/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGH…ook.Plugin.VideoViewer/Properties/Resource.Designer.cs3// This code was generated by a tool.COMMENT
Cross-File Repetition3 hits · 15 pts
SeverityFileLineSnippetContext
HIGH…ckLook.Plugin.ImageViewer/Webview/Svg/SvgImagePanel.cs0access-control-allow-origin: * content-type: {mimetypes.getmimetype()}STRING
HIGH…ckLook.Plugin.ImageViewer/Webview/Tgs/TgsImagePanel.cs0access-control-allow-origin: * content-type: {mimetypes.getmimetype()}STRING
HIGH….Plugin.ImageViewer/Webview/Lottie/LottieImagePanel.cs0access-control-allow-origin: * content-type: {mimetypes.getmimetype()}STRING
Verbosity Indicators2 hits · 4 pts
SeverityFileLineSnippetContext
LOWQuickLook.Native/QuickLook.Native32/IDMan.cpp28 // Step 1: Get the selected item name from the IDM list via UIAutomationCOMMENT
LOWQuickLook.Native/QuickLook.Native32/IDMan.cpp33 // Step 2: Resolve the file path from the IDM registryCOMMENT
Structural Annotation Overuse2 hits · 4 pts
SeverityFileLineSnippetContext
LOWQuickLook.Native/QuickLook.Native32/IDMan.cpp28 // Step 1: Get the selected item name from the IDM list via UIAutomationCOMMENT
LOWQuickLook.Native/QuickLook.Native32/IDMan.cpp33 // Step 2: Resolve the file path from the IDM registryCOMMENT
Decorative Section Separators1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUM…kLook.Plugin.ArchiveViewer/DSStore/DSStoreExtractor.cs43 // ── Internal allocator / block types ────────────────────────────────────COMMENT
Fake / Example Data2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…ckLook.Plugin.ArchiveViewer/ArchiveFile/IconManager.cs143 Shell32.SHGetFileInfo("placeholder",CODE
LOW…MarkdownViewer/Resources/highlight.js/highlight.min.js316 }),re=["a","abbr","address","article","aside","audio","b","blockquote","body","button","canvas","caption","cite","coCODE
Hyper-Verbose Identifiers1 hit · 1 pts
SeverityFileLineSnippetContext
LOW…gin.ImageViewer/Resources/Web/lottie-web/lottie.min.js1"undefined"!=typeof document&&"undefined"!=typeof navigator&&function(t,e){"object"==typeof exports&&"undefined"!=typeofCODE