diff --git a/core/fpdftext/cpdf_textpage.cpp b/core/fpdftext/cpdf_textpage.cpp
index c310cac..4bda087 100644
--- a/core/fpdftext/cpdf_textpage.cpp
+++ b/core/fpdftext/cpdf_textpage.cpp
@@ -112,6 +112,22 @@
   return count / (end - start);
 }
 
+bool IsControlChar(const PAGECHAR_INFO& charInfo) {
+  switch (charInfo.m_Unicode) {
+    case 0x2:
+    case 0x3:
+    case 0x93:
+    case 0x94:
+    case 0x96:
+    case 0x97:
+    case 0x98:
+    case 0xfffe:
+      return charInfo.m_Flag != FPDFTEXT_CHAR_HYPHEN;
+    default:
+      return false;
+  }
+}
+
 bool IsHyphenCode(wchar_t c) {
   return c == 0x2D || c == 0xAD;
 }
@@ -204,6 +220,12 @@
   return right <= left;
 }
 
+CFX_Matrix GetPageMatrix(const CPDF_Page* pPage) {
+  const FX_RECT rect(0, 0, static_cast<int>(pPage->GetPageWidth()),
+                     static_cast<int>(pPage->GetPageHeight()));
+  return pPage->GetDisplayMatrix(rect, 0);
+}
+
 }  // namespace
 
 PDFTEXT_Obj::PDFTEXT_Obj() {}
@@ -223,40 +245,17 @@
 PAGECHAR_INFO::~PAGECHAR_INFO() {}
 
 CPDF_TextPage::CPDF_TextPage(const CPDF_Page* pPage, bool rtl)
-    : m_pPage(pPage), m_rtl(rtl) {
+    : m_pPage(pPage), m_rtl(rtl), m_DisplayMatrix(GetPageMatrix(pPage)) {
+  Init();
+}
+
+CPDF_TextPage::~CPDF_TextPage() = default;
+
+void CPDF_TextPage::Init() {
   m_TextBuf.SetAllocStep(10240);
-  const FX_RECT rect(0, 0, static_cast<int>(pPage->GetPageWidth()),
-                     static_cast<int>(pPage->GetPageHeight()));
-  m_DisplayMatrix = pPage->GetDisplayMatrix(rect, 0);
-}
-
-CPDF_TextPage::~CPDF_TextPage() {}
-
-bool CPDF_TextPage::IsControlChar(const PAGECHAR_INFO& charInfo) {
-  switch (charInfo.m_Unicode) {
-    case 0x2:
-    case 0x3:
-    case 0x93:
-    case 0x94:
-    case 0x96:
-    case 0x97:
-    case 0x98:
-    case 0xfffe:
-      return charInfo.m_Flag != FPDFTEXT_CHAR_HYPHEN;
-    default:
-      return false;
-  }
-}
-
-void CPDF_TextPage::ParseTextPage() {
-  m_bIsParsed = false;
-  m_TextBuf.Clear();
-  m_CharList.clear();
-  m_pPreTextObj = nullptr;
   ProcessObject();
 
   m_bIsParsed = true;
-  m_CharIndex.clear();
   const int nCount = CountChars();
   if (nCount)
     m_CharIndex.push_back(0);
@@ -529,8 +528,7 @@
 
 CPDF_TextPage::TextOrientation CPDF_TextPage::FindTextlineFlowOrientation()
     const {
-  if (m_pPage->GetPageObjectCount() == 0)
-    return TextOrientation::kUnknown;
+  DCHECK_NE(m_pPage->GetPageObjectCount(), 0);
 
   const int32_t nPageWidth = static_cast<int32_t>(m_pPage->GetPageWidth());
   const int32_t nPageHeight = static_cast<int32_t>(m_pPage->GetPageHeight());
@@ -1338,7 +1336,7 @@
 }
 
 bool CPDF_TextPage::IsSameTextObject(CPDF_TextObject* pTextObj1,
-                                     CPDF_TextObject* pTextObj2) {
+                                     CPDF_TextObject* pTextObj2) const {
   if (!pTextObj1 || !pTextObj2)
     return false;
 
@@ -1394,7 +1392,7 @@
 bool CPDF_TextPage::IsSameAsPreTextObject(
     CPDF_TextObject* pTextObj,
     const CPDF_PageObjectHolder* pObjList,
-    CPDF_PageObjectHolder::const_iterator iter) {
+    CPDF_PageObjectHolder::const_iterator iter) const {
   int i = 0;
   while (i < 5 && iter != pObjList->begin()) {
     --iter;
diff --git a/core/fpdftext/cpdf_textpage.h b/core/fpdftext/cpdf_textpage.h
index 5b82776..b4e11d1 100644
--- a/core/fpdftext/cpdf_textpage.h
+++ b/core/fpdftext/cpdf_textpage.h
@@ -81,7 +81,6 @@
   CPDF_TextPage(const CPDF_Page* pPage, bool rtl);
   ~CPDF_TextPage();
 
-  void ParseTextPage();
   bool IsParsed() const { return m_bIsParsed; }
   int CharIndexFromTextIndex(int TextIndex) const;
   int TextIndexFromCharIndex(int CharIndex) const;
@@ -118,8 +117,8 @@
 
   enum class MarkedContentState { kPass = 0, kDone, kDelay };
 
+  void Init();
   bool IsHyphen(wchar_t curChar) const;
-  bool IsControlChar(const PAGECHAR_INFO& charInfo);
   void ProcessObject();
   void ProcessFormObject(CPDF_FormObject* pFormObj,
                          const CFX_Matrix& formMatrix);
@@ -134,8 +133,9 @@
   Optional<PAGECHAR_INFO> GenerateCharInfo(wchar_t unicode);
   bool IsSameAsPreTextObject(CPDF_TextObject* pTextObj,
                              const CPDF_PageObjectHolder* pObjList,
-                             CPDF_PageObjectHolder::const_iterator iter);
-  bool IsSameTextObject(CPDF_TextObject* pTextObj1, CPDF_TextObject* pTextObj2);
+                             CPDF_PageObjectHolder::const_iterator iter) const;
+  bool IsSameTextObject(CPDF_TextObject* pTextObj1,
+                        CPDF_TextObject* pTextObj2) const;
   void CloseTempLine();
   MarkedContentState PreMarkedContent(PDFTEXT_Obj pObj);
   void ProcessMarkedContent(PDFTEXT_Obj pObj);
@@ -160,7 +160,7 @@
   CFX_Matrix m_perMatrix;
   const bool m_rtl;
   bool m_bIsParsed = false;
-  CFX_Matrix m_DisplayMatrix;
+  const CFX_Matrix m_DisplayMatrix;
   std::vector<CFX_FloatRect> m_SelRects;
   std::vector<PDFTEXT_Obj> m_LineObj;
   TextOrientation m_TextlineDir = TextOrientation::kUnknown;
diff --git a/fpdfsdk/fpdf_text.cpp b/fpdfsdk/fpdf_text.cpp
index 9c16958..03ef0d3 100644
--- a/fpdfsdk/fpdf_text.cpp
+++ b/fpdfsdk/fpdf_text.cpp
@@ -50,7 +50,6 @@
   CPDF_ViewerPreferences viewRef(pPDFPage->GetDocument());
   auto textpage =
       pdfium::MakeUnique<CPDF_TextPage>(pPDFPage, viewRef.IsDirectionR2L());
-  textpage->ParseTextPage();
 
   // Caller takes ownership.
   return FPDFTextPageFromCPDFTextPage(textpage.release());