diff --git a/Duplicati/WebserverCore/Dto/V2/TestFilterRequestDto.cs b/Duplicati/WebserverCore/Dto/V2/TestFilterRequestDto.cs
new file mode 100644
index 000000000..df5b703d6
--- /dev/null
+++ b/Duplicati/WebserverCore/Dto/V2/TestFilterRequestDto.cs
@@ -0,0 +1,43 @@
+// Copyright (C) 2026, The Duplicati Team
+// https://duplicati.com, hello@duplicati.com
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a 
+// copy of this software and associated documentation files (the "Software"), 
+// to deal in the Software without restriction, including without limitation 
+// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+// and/or sell copies of the Software, and to permit persons to whom the 
+// Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in 
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+// DEALINGS IN THE SOFTWARE.
+
+namespace Duplicati.WebserverCore.Dto.V2;
+
+/// <summary>
+/// DTO for testing filesystem filters
+/// </summary>
+public class TestFilterRequestDto
+{
+    /// <summary>
+    /// The paths to evaluate against the filters
+    /// </summary>
+    public string[]? Paths { get; set; }
+
+    /// <summary>
+    /// The source paths (roots) which are unconditionally included
+    /// </summary>
+    public string[]? Sources { get; set; }
+
+    /// <summary>
+    /// The filter strings to evaluate
+    /// </summary>
+    public string[]? Filters { get; set; }
+}
diff --git a/Duplicati/WebserverCore/Dto/V2/TestFilterResponseDto.cs b/Duplicati/WebserverCore/Dto/V2/TestFilterResponseDto.cs
new file mode 100644
index 000000000..803b7172f
--- /dev/null
+++ b/Duplicati/WebserverCore/Dto/V2/TestFilterResponseDto.cs
@@ -0,0 +1,78 @@
+// Copyright (C) 2026, The Duplicati Team
+// https://duplicati.com, hello@duplicati.com
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a 
+// copy of this software and associated documentation files (the "Software"), 
+// to deal in the Software without restriction, including without limitation 
+// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+// and/or sell copies of the Software, and to permit persons to whom the 
+// Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in 
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+// DEALINGS IN THE SOFTWARE.
+
+namespace Duplicati.WebserverCore.Dto.V2;
+
+/// <summary>
+/// DTO for the result of testing a single filesystem path against filters
+/// </summary>
+public record TestFilterResponseItem
+{
+    /// <summary>
+    /// The path that was evaluated
+    /// </summary>
+    public string Path { get; set; } = "";
+
+    /// <summary>
+    /// Whether the path is included by the filters
+    /// </summary>
+    public bool Included { get; set; }
+
+    /// <summary>
+    /// The string representation of the filter that matched, if any
+    /// </summary>
+    public string? MatchedFilter { get; set; }
+}
+
+/// <summary>
+/// DTO for the response of testing filesystem filters
+/// </summary>
+public record TestFilterResponseDto : ResponseEnvelope<TestFilterResponseItem[]>
+{
+    /// <summary>
+    /// Creates a success response with the test results
+    /// </summary>
+    /// <param name="data">The data to include</param>
+    /// <returns>The response DTO</returns>
+    public static TestFilterResponseDto Create(TestFilterResponseItem[] data)
+        => new TestFilterResponseDto()
+        {
+            Success = true,
+            Error = null,
+            StatusCode = "OK",
+            Data = data
+        };
+
+    /// <summary>
+    /// Creates an error response
+    /// </summary>
+    /// <param name="error">The error message</param>
+    /// <param name="statusCode">The status code</param>
+    /// <returns>The response DTO</returns>
+    public static TestFilterResponseDto CreateError(string error, string statusCode)
+        => new TestFilterResponseDto()
+        {
+            Success = false,
+            Error = error,
+            StatusCode = statusCode,
+            Data = null
+        };
+}
diff --git a/Duplicati/WebserverCore/Endpoints/V2/TestFilters.cs b/Duplicati/WebserverCore/Endpoints/V2/TestFilters.cs
new file mode 100644
index 000000000..b7b951291
--- /dev/null
+++ b/Duplicati/WebserverCore/Endpoints/V2/TestFilters.cs
@@ -0,0 +1,102 @@
+// Copyright (C) 2026, The Duplicati Team
+// https://duplicati.com, hello@duplicati.com
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a 
+// copy of this software and associated documentation files (the "Software"), 
+// to deal in the Software without restriction, including without limitation 
+// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+// and/or sell copies of the Software, and to permit persons to whom the 
+// Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in 
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+// DEALINGS IN THE SOFTWARE.
+
+using Duplicati.Library.Utility;
+using Duplicati.Library.Common.IO;
+using Duplicati.WebserverCore.Abstractions;
+using Duplicati.WebserverCore.Dto.V2;
+using Microsoft.AspNetCore.Mvc;
+using Duplicati.Library.Interface;
+
+namespace Duplicati.WebserverCore.Endpoints.V2;
+
+public class TestFilters : IEndpointV2
+{
+    private static readonly string LOGTAG = Library.Logging.Log.LogTagFromType<TestFilters>();
+
+    public static void Map(RouteGroupBuilder group)
+    {
+        group.MapPost("/filesystem/test-filter", ([FromBody] TestFilterRequestDto request) => Execute(request))
+            .RequireAuthorization();
+    }
+
+    private static TestFilterResponseDto Execute(TestFilterRequestDto request)
+    {
+        try
+        {
+            return TestFilterResponseDto.Create(Evaluate(request).ToArray());
+        }
+        catch (Exception ex)
+        {
+            Library.Logging.Log.WriteErrorMessage(LOGTAG, "TestFilters", ex, "An error occurred while testing filters");
+            return ex is UserInformationException uex
+                ? TestFilterResponseDto.CreateError(uex.Message, uex.HelpID)
+                : TestFilterResponseDto.CreateError(ex.Message, "InternalError");
+        }
+    }
+
+    private static IEnumerable<TestFilterResponseItem> Evaluate(TestFilterRequestDto request)
+    {
+        var filter = FilterExpression.Deserialize(request.Filters ?? Array.Empty<string>());
+        var enumeratefilter = filter;
+
+        FilterExpression.AnalyzeFilters(filter, out var includes, out var excludes);
+        if (includes && !excludes)
+            enumeratefilter = FilterExpression.Combine(filter, new FilterExpression("*" + System.IO.Path.DirectorySeparatorChar, true));
+
+        var sourceArray = request.Sources ?? Array.Empty<string>();
+        var sources = new HashSet<string>(sourceArray, Utility.ClientFilenameStringComparer);
+
+        foreach (var path in request.Paths ?? Array.Empty<string>())
+        {
+            if (path == null) continue;
+
+            // If the path is exactly one of the sources, it's always included.
+            if (sources.Contains(path))
+            {
+                yield return new TestFilterResponseItem
+                {
+                    Path = path,
+                    Included = true,
+                    MatchedFilter = null
+                };
+                continue;
+            }
+
+            // Check if the path is under any of the source folders
+            var isUnderSource = sourceArray
+               .Any(source => string.Equals(Util.AppendDirSeparator(path), Util.AppendDirSeparator(source), Utility.ClientFilenameStringComparison) ||
+                    Utility.IsPathBelowFolder(path, source));
+
+            // Do not return paths that are not part of the source selection
+            if (!isUnderSource)
+                continue;
+
+            var isIncluded = FilterExpression.Matches(enumeratefilter!, path, out var match);
+            yield return new TestFilterResponseItem
+            {
+                Path = path,
+                Included = isIncluded,
+                MatchedFilter = match?.ToString()
+            };
+        }
+    }
+}
diff --git a/Duplicati/WebserverCore/Services/SystemInfoProvider.cs b/Duplicati/WebserverCore/Services/SystemInfoProvider.cs
index 324203186..d98e99d09 100644
--- a/Duplicati/WebserverCore/Services/SystemInfoProvider.cs
+++ b/Duplicati/WebserverCore/Services/SystemInfoProvider.cs
@@ -59,6 +59,7 @@ public class SystemInfoProvider(IApplicationSettings applicationSettings, Connec
         "v2:system:temp-disk-space",
         "v1:subscribe:remotecontrol",
         "v1:ipc:controller",
+        "v2:filesystem:test-filter"
 
         // "v1:subscribe:scheduler",
     ];