diff --git a/CMakeLists.txt b/CMakeLists.txt
index ee5d38774c..8fd8fa0077 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1109,9 +1109,9 @@ endif()
 
 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL)
   # Install the man pages.
-  install(FILES libpng.3 libpngpf.3
+  install(FILES manuals/libpng.3
           DESTINATION ${CMAKE_INSTALL_MANDIR}/man3)
-  install(FILES png.5
+  install(FILES manuals/png.5
           DESTINATION ${CMAKE_INSTALL_MANDIR}/man5)
   # Install the pkg-config files.
   if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
diff --git a/Makefile.am b/Makefile.am
index eed986c2b8..e2e28e4e97 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -91,7 +91,7 @@ TESTS =\
 endif
 
 # man pages
-dist_man_MANS= libpng.3 libpngpf.3 png.5
+dist_man_MANS= manuals/libpng.3 manuals/png.5
 
 # generate the -config scripts if required
 binconfigs= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
diff --git a/Makefile.in b/Makefile.in
index 44b6936b7d..239afd1e4f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -812,7 +812,7 @@ BUILT_SOURCES = pnglibconf.h
 
 
 # man pages
-dist_man_MANS = libpng.3 libpngpf.3 png.5
+dist_man_MANS = manuals/libpng.3 manuals/png.5
 EXTRA_SCRIPTS = libpng-config libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
 bin_SCRIPTS = @binconfigs@
 
diff --git a/README.md b/README.md
index 2fbde72691..bf54bbb2fd 100644
--- a/README.md
+++ b/README.md
@@ -104,19 +104,14 @@ filter heuristics, have since been removed.
 Files included in this distribution
 -----------------------------------
 
-    ANNOUNCE      =>  Announcement of this version, with recent changes
-    AUTHORS       =>  List of contributing authors
+    ANNOUNCE.md   =>  Announcement of this version, with recent changes
+    AUTHORS.md    =>  List of contributing authors
     CHANGES       =>  Description of changes between libpng versions
-    INSTALL       =>  Instructions to install libpng
-    LICENSE       =>  License to use and redistribute libpng
-    README        =>  This file
-    TODO          =>  Things not implemented in the current library
-    TRADEMARK     =>  Trademark information
+    LICENSE.md    =>  License to use and redistribute libpng
+    README.md     =>  This file
+    TODO.md       =>  Things not implemented in the current library
+    TRADEMARK.md  =>  Trademark information
     example.c     =>  Example code for using libpng functions
-    libpng.3      =>  Manual page for libpng (includes libpng-manual.txt)
-    libpng-manual.txt  =>  Description of libpng and its functions
-    libpngpf.3    =>  Manual page for libpng's private functions (deprecated)
-    png.5         =>  Manual page for the PNG format
     png.c         =>  Basic interface functions common to library
     png.h         =>  Library function and interface declarations (public)
     pngpriv.h     =>  Library function and interface declarations (private)
@@ -165,6 +160,11 @@ Files included in this distribution
         testpngs/     =>  Test images
         tools/        =>  Various tools
         visupng/      =>  VisualPng, a Windows viewer for PNG images
+    manuals/      =>  Manuals
+        libpng-install.txt  =>  Instructions to install libpng
+        libpng-manual.txt   =>  Description of libpng and its functions
+        libpng.3      =>  Manual page for libpng (includes libpng-manual.txt)
+        png.5         =>  Manual page for the PNG format
     projects/     =>  Project files and workspaces for various IDEs
         owatcom/      =>  OpenWatcom project
         visualc71/    =>  Microsoft Visual C++ 7.1 workspace
diff --git a/libpngpf.3 b/libpngpf.3
deleted file mode 100644
index b7557ca27e..0000000000
--- a/libpngpf.3
+++ /dev/null
@@ -1,24 +0,0 @@
-.TH LIBPNGPF 3 "September 12, 2024"
-.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.44
-(private functions)
-
-.SH SYNOPSIS
-\fB#include \fI"pngpriv.h"
-
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer
-\fP\fImaintained\fP\fB, now that the private function prototypes are hidden in
-\fP\fIpngpriv.h\fP\fB and not accessible to applications. Look in
-\fP\fIpngpriv.h\fP\fB for the prototypes and a short description of each
-function.
-
-.SH DESCRIPTION
-The functions previously listed here are used privately by libpng and are not
-available for use by applications.  They are not "exported" to applications
-using shared libraries.
-
-.SH "SEE ALSO"
-.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
-
-.SH AUTHORS
-Cosmin Truta, Glenn Randers-Pehrson
diff --git a/INSTALL.txt b/manuals/libpng-install.txt
similarity index 100%
rename from INSTALL.txt
rename to manuals/libpng-install.txt
diff --git a/libpng-manual.txt b/manuals/libpng-manual.txt
similarity index 100%
rename from libpng-manual.txt
rename to manuals/libpng-manual.txt
diff --git a/libpng.3 b/manuals/libpng.3
similarity index 100%
rename from libpng.3
rename to manuals/libpng.3
diff --git a/png.5 b/manuals/png.5
similarity index 100%
rename from png.5
rename to manuals/png.5