diff --git a/server/TracyWorker.cpp b/server/TracyWorker.cpp
index 33cc0594..51414863 100644
--- a/server/TracyWorker.cpp
+++ b/server/TracyWorker.cpp
@@ -22,6 +22,7 @@
 #include "../common/TracyProtocol.hpp"
 #include "../common/TracySystem.hpp"
 #include "TracyFileRead.hpp"
+#include "TracyFilesystem.hpp"
 #include "TracyFileWrite.hpp"
 #include "TracySort.hpp"
 #include "TracyTaskDispatch.hpp"
@@ -7299,4 +7300,28 @@ ZoneExtra& Worker::RequestZoneExtra( ZoneEvent& ev )
     }
 }
 
+void Worker::CacheSource( const StringRef& str )
+{
+    assert( str.active );
+    assert( m_checkedFileStrings.find( str ) == m_checkedFileStrings.end() );
+    m_checkedFileStrings.emplace( str );
+    auto file = GetString( str );
+    if( SourceFileValid( file, GetCaptureTime() ) )
+    {
+        // Possible duplication of pointer and index strings
+        if( m_data.sourceFileCache.find( file ) == m_data.sourceFileCache.end() )
+        {
+            FILE* f = fopen( file, "rb" );
+            fseek( f, 0, SEEK_END );
+            const auto sz = ftell( f );
+            fseek( f, 0, SEEK_SET );
+            auto src = (char*)m_slab.AllocBig( sz+1 );
+            fread( src, 1, sz, f );
+            src[sz] = '\0';
+            fclose( f );
+            m_data.sourceFileCache.emplace( file, MemoryBlock{ src, uint32_t( sz+1 ) } );
+        }
+    }
+}
+
 }
diff --git a/server/TracyWorker.hpp b/server/TracyWorker.hpp
index c5ab3c00..0aa76d55 100644
--- a/server/TracyWorker.hpp
+++ b/server/TracyWorker.hpp
@@ -304,6 +304,8 @@ private:
 
         unordered_flat_map<uint64_t, uint64_t> codeAddressToLocation;
         unordered_flat_map<uint64_t, Vector<uint64_t>> locationCodeAddressList;
+
+        unordered_flat_map<const char*, MemoryBlock, charutil::Hasher, charutil::Comparator> sourceFileCache;
     };
 
     struct MbpsBlock
@@ -714,6 +716,8 @@ private:
     StringLocation StoreString( const char* str, size_t sz );
     const ContextSwitch* const GetContextSwitchDataImpl( uint64_t thread );
 
+    void CacheSource( const StringRef& str );
+
     tracy_force_inline Vector<short_ptr<ZoneEvent>>& GetZoneChildrenMutable( int32_t idx ) { return m_data.zoneChildren[idx]; }
 #ifndef TRACY_NO_STATISTICS
     tracy_force_inline Vector<GhostZone>& GetGhostChildrenMutable( int32_t idx ) { return m_data.ghostChildren[idx]; }
@@ -803,6 +807,8 @@ private:
     FrameImagePending m_pendingFrameImageData = {};
     unordered_flat_map<uint64_t, SymbolPending> m_pendingSymbols;
     unordered_flat_set<uint64_t> m_pendingSymbolCode;
+    unordered_flat_set<StringRef, StringRefHasher, StringRefComparator> m_pendingFileStrings;
+    unordered_flat_set<StringRef, StringRefHasher, StringRefComparator> m_checkedFileStrings;
 
     uint32_t m_pendingStrings;
     uint32_t m_pendingThreads;