diff --git a/src/UglyToad.PdfPig/Parser/CatalogFactory.cs b/src/UglyToad.PdfPig/Parser/CatalogFactory.cs
index 9f272f88..2fb7c602 100644
--- a/src/UglyToad.PdfPig/Parser/CatalogFactory.cs
+++ b/src/UglyToad.PdfPig/Parser/CatalogFactory.cs
@@ -20,7 +20,7 @@
             }
         }
 
-        public static Catalog Create(IndirectReference rootReference, DictionaryToken dictionary, 
+        public static Catalog Create(IndirectReference rootReference, DictionaryToken dictionary,
             IPdfTokenScanner scanner,
             bool isLenientParsing)
         {
@@ -64,8 +64,6 @@
             return new Catalog(dictionary, pages, pageTree);
         }
 
-#if NETSTANDARD2_0_OR_GREATER
-
         private static PageTreeNode ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing, PageCounter pageNumber)
         {
             bool isPage = CheckIfIsPage(nodeDictionaryInput, parentReferenceInput, isRoot, pdfTokenScanner, isLenientParsing);
@@ -79,11 +77,11 @@
 
             //If we got here, we have to iterate till we manage to exit
 
-            var toProcess         = new Queue<(PageTreeNode thisPage, IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, List<PageTreeNode> nodeChildren)>();
-            var firstPage         = new PageTreeNode(nodeDictionaryInput, referenceInput, false, null);
-            var setChildren       = new List<Action>();
+            var toProcess = new Queue<(PageTreeNode thisPage, IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, List<PageTreeNode> nodeChildren)>();
+            var firstPage = new PageTreeNode(nodeDictionaryInput, referenceInput, false, null);
+            var setChildren = new List<Action>();
             var firstPageChildren = new List<PageTreeNode>();
-            
+
             setChildren.Add(() => firstPage.WithChildren(firstPageChildren));
 
             toProcess.Enqueue((thisPage: firstPage, reference: referenceInput, nodeDictionary: nodeDictionaryInput, parentReference: parentReferenceInput, nodeChildren: firstPageChildren));
@@ -162,69 +160,5 @@
                 return isPage;
             }
         }
-
-#endif
-
-        // Keep the algorithm below from throwing a StackOverflow exception. 
-        // It probably should be refactored to not be recursive
-        private const ushort MAX_TREE_DEPTH = 1024;
-
-        private static PageTreeNode ProcessPagesNode(IndirectReference reference, DictionaryToken nodeDictionary, IndirectReference parentReference, bool isRoot, IPdfTokenScanner pdfTokenScanner, bool isLenientParsing, PageCounter pageNumber, int depth = 0)
-        {
-            depth++;
-
-            if (depth > MAX_TREE_DEPTH) { throw new PdfDocumentFormatException($"Tree exceeded maximum depth of {MAX_TREE_DEPTH}, aborting."); }
-
-            var isPage = false;
-
-            if (!nodeDictionary.TryGet(NameToken.Type, pdfTokenScanner, out NameToken type))
-            {
-                if (!isLenientParsing) { throw new PdfDocumentFormatException($"Node in the document pages tree did not define a type: {nodeDictionary}."); }
-
-                if (!nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken _)) { isPage = true; }
-            }
-            else
-            {
-                isPage = type.Equals(NameToken.Page);
-
-                if (!isPage && !type.Equals(NameToken.Pages) && !isLenientParsing) { throw new PdfDocumentFormatException($"Node in the document pages tree defined invalid type: {nodeDictionary}."); }
-            }
-
-            if (!isLenientParsing && !isRoot)
-            {
-                if (!nodeDictionary.TryGet(NameToken.Parent, pdfTokenScanner, out IndirectReferenceToken parentReferenceToken)) { throw new PdfDocumentFormatException($"Could not find parent indirect reference token on pages tree node: {nodeDictionary}."); }
-
-                if (!parentReferenceToken.Data.Equals(parentReference)) { throw new PdfDocumentFormatException($"Pages tree node parent reference {parentReferenceToken.Data} did not match actual parent {parentReference}."); }
-            }
-
-            if (isPage)
-            {
-                pageNumber.Increment();
-                var newPage = new PageTreeNode(nodeDictionary, reference, true, pageNumber.PageCount).WithChildren(EmptyArray<PageTreeNode>.Instance);
-                return newPage;
-            }
-            
-            if (!nodeDictionary.TryGet(NameToken.Kids, pdfTokenScanner, out ArrayToken kids))
-            {
-                if (!isLenientParsing) { throw new PdfDocumentFormatException($"Pages node in the document pages tree did not define a kids array: {nodeDictionary}."); }
-               
-                kids = new ArrayToken(EmptyArray<IToken>.Instance);
-            }
-
-            var nodeChildren = new List<PageTreeNode>();
-
-            foreach (var kid in kids.Data)
-            {
-                if (!(kid is IndirectReferenceToken kidRef)) { throw new PdfDocumentFormatException($"Kids array contained invalid entry (must be indirect reference): {kid}."); }
-
-                if (!DirectObjectFinder.TryGet(kidRef, pdfTokenScanner, out DictionaryToken kidDictionaryToken)) { throw new PdfDocumentFormatException($"Could not find dictionary associated with reference in pages kids array: {kidRef}."); }
-
-                var kidNode = ProcessPagesNode(kidRef.Data, kidDictionaryToken, reference, false, pdfTokenScanner, isLenientParsing, pageNumber, depth);
-
-                nodeChildren.Add(kidNode);
-            }
-
-            return new PageTreeNode(nodeDictionary, reference, false, null).WithChildren(nodeChildren);
-        }
     }
 }