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This report presents the forensic synthetic code analysis of JosefNemec/Playnite, a C# project with 13,507 GitHub stars. SynthScan v2.0 examined 154,200 lines of code across 910 source files, recording 504 pattern matches distributed across 6 syntactic categories. The overall adjusted score of 3.0 places this repository in the Likely human-written 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).
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.
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.
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.
The scanner identified 504 distinct pattern matches across 6 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.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …rce/Tools/PlayniteInstaller/Properties/AssemblyInfo.cs | 21 | // COM, set the ComVisible attribute to true on that type. | COMMENT |
| LOW | …rce/Tools/PlayniteInstaller/Properties/AssemblyInfo.cs | 41 | COMMENT | |
| LOW | …ols/PlayniteInstaller/Properties/Resources.Designer.cs | 1 | //------------------------------------------------------------------------------ | COMMENT |
| LOW | …urce/Tools/Playnite.Toolbox/Properties/AssemblyInfo.cs | 21 | COMMENT | |
| LOW | …ensions/CustomLibraryPlugin/Properties/AssemblyInfo.cs | 21 | COMMENT | |
| LOW | …nsions/CustomMetadataPlugin/Properties/AssemblyInfo.cs | 21 | COMMENT | |
| LOW | …es/Extensions/GenericPlugin/Properties/AssemblyInfo.cs | 21 | COMMENT | |
| LOW | …ce/Tools/Playnite.Utilities/Properties/AssemblyInfo.cs | 21 | COMMENT | |
| LOW | source/Playnite/license.txt | 1301 | // modification, are permitted provided that the following conditions are | COMMENT |
| LOW | source/Playnite/license.txt | 1321 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | COMMENT |
| LOW | source/Playnite/license.txt | 1341 | // copyright notice, this list of conditions and the following disclaimer | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 341 | Beaten = 2, | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 1601 | } | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 2041 | /// Idicates time occurig past month. | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 2201 | /// Gets empty region. | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 2221 | /// Mixed rating. | COMMENT |
| LOW | source/Playnite/Database/OldModels/Ver2.cs | 2261 | /// <summary> | COMMENT |
| LOW | …e/Playnite/Database/OldModels/NewVer1/OldGameAction.cs | 21 | /// <summary> | COMMENT |
| LOW | …ce/Playnite/Database/Collections/LiteDBFileReaderV7.cs | 521 | /// </summary> | COMMENT |
| LOW | …ce/Playnite/Database/Collections/LiteDBFileReaderV7.cs | 541 | /// </summary> | COMMENT |
| LOW | …ce/Playnite/Database/Collections/LiteDBFileReaderV7.cs | 561 | /// Define how many transactions can be open simultaneously | COMMENT |
| LOW | source/Playnite/Common/SafeFileEnumerator.cs | 161 | COMMENT | |
| LOW | source/Playnite/Common/TGASharpLib.cs | 301 | Other_253, | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 321 | public enum TgaColorMapEntrySize : byte | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 621 | { | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 921 | COMMENT | |
| LOW | source/Playnite/Common/TGASharpLib.cs | 1141 | COMMENT | |
| LOW | source/Playnite/Common/TGASharpLib.cs | 1161 | { | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 1901 | } | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 2121 | { | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 2701 | COMMENT | |
| LOW | source/Playnite/Common/TGASharpLib.cs | 2721 | COMMENT | |
| LOW | source/Playnite/Common/TGASharpLib.cs | 2821 | /// </summary> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3081 | } | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3241 | /// <summary> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3261 | /// determine the number of bytes contained in field 7.</para> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3281 | /// of the following formats:</para> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3561 | #region Properties | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3581 | /// it should contain the name of the person who created the image (author). If the field is not | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3601 | /// lines must be null. | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3621 | /// copied. By using this area, you are guaranteed an unmodified region for date and time | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3641 | { | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3661 | } | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3681 | /// “Software ID” field above. The SHORT contains the version number as a binary | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3701 | /// the time the image is saved. The format is in A:R:G:B where ‘A’ (most significant byte) | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3721 | /// <para>SHORT 0: Pixel Ratio Numerator(pixel width)</para> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3741 | /// precision necessary. An uncorrected image (an image with no gamma) should have the value 1.0 as | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3781 | /// Bytes 490-493 - This field is a 4-byte field containing a single offset value. This is an | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3801 | /// <para>Pre-multiplied Alpha Example: Suppose the Alpha channel data is being used to specify the | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3821 | /// <para>1) To make random access of compressed images easy.</para> | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 3841 | /// representation possible. The postage stamp image must be stored in the same format as the normal | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 4081 | TgaString zeroStrTerminator = TgaString.ZeroTerminator; | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 4141 | /// The next four bytes(bytes 4-7, the second LONG) contain an offset from the | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 4281 | /// Checking by <see cref="TgaString.XFileSignatute"/>. | COMMENT |
| LOW | source/Playnite/Common/TGASharpLib.cs | 4581 | /// Make <see cref="TGA"/> from <see cref="Stream"/>. | COMMENT |
| LOW | …rce/Playnite/Common/Extensions/BitmapIconExtensions.cs | 101 | COMMENT | |
| LOW | source/Playnite/Properties/AssemblyInfo.cs | 21 | // to COM components. If you need to access a type in this assembly from | COMMENT |
| LOW | source/Playnite/Localization/LocalizationKeys.cs | 1 | /// | COMMENT |
| LOW | source/Playnite/Localization/LocalizationKeys.cs | 21 | /// Filter Active | COMMENT |
| LOW | source/Playnite/Localization/LocalizationKeys.cs | 41 | /// Invalid Data | COMMENT |
| 430 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | …ools/PlayniteInstaller/Properties/Settings.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …ols/PlayniteInstaller/Properties/Resources.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | source/Tests/TestApp/Properties/Settings.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | source/Tests/TestApp/Properties/Resources.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …Playnite.FullscreenApp/Properties/Settings.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …laynite.FullscreenApp/Properties/Resources.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …ce/Playnite.DesktopApp/Properties/Settings.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| HIGH | …e/Playnite.DesktopApp/Properties/Resources.Designer.cs | 3 | // This code was generated by a tool. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| CRITICAL | source/Playnite/ViewModels/SearchViewModel.cs | 257 | AdditionalInfo.Add(item.Game.ReleaseDate.Value.Year.ToString()); | CODE |
| CRITICAL | source/Playnite/App/PlayniteApplication.cs | 333 | var cultName = System.Globalization.CultureInfo.CurrentUICulture.Name.Replace('-', '_'); | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | source/PlayniteSDK/IWebView.cs | 377 | /// value to have reasonably robust defense against some classes of cross-site request | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | source/Playnite/WebView/WebViewBase.cs | 13 | public class CustomResourceRequestHandler : CefSharp.Handler.ResourceRequestHandler | CODE |
| LOW | source/Playnite/WebView/WebViewBase.cs | 112 | public class CustomRequestHandler : CefSharp.Handler.RequestHandler | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | source/Tools/Playnite.Toolbox/Program.cs | 140 | logger.Warn($"Don't forget to update manifest file with relevant information."); | CODE |