diff --git a/README.md b/README.md
index eeabe17..8db5a30 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 ## Caesium CommandLineTools
-###### caesium-clt - v0.16.0-beta (build 20211023)
+###### caesium-clt - v0.17.0-beta (build 20221001)
 
 ###### REQUIREMENTS
-* [libcaesium](https://github.com/Lymphatus/libcaesium) >= 0.6.0
+* [libcaesium](https://github.com/Lymphatus/libcaesium) >= 0.9.2
 
 ###### Included libraries
 * [optparse](https://github.com/skeeto/optparse)
@@ -11,8 +11,8 @@
 ----------
 
 ###### TESTED PLATFORMS
-* Mac OS X Big Sur (v10.15)
-* Ubuntu 20.04
+* macOS Monterey (v12.6)
+* Ubuntu 22.04
 * Windows 10
 
 ----------
diff --git a/README.zh-CN.md b/README.zh-CN.md
index ad46a6f..af7da6f 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -1,8 +1,8 @@
 ## Caesium 命令行工具
-###### caesium-clt - v0.16.0-beta (build 20211023)
+###### caesium-clt - v0.17.0-beta (build 20221001)
 
 ###### 依赖
-* [libcaesium](https://github.com/Lymphatus/libcaesium) >= 0.6.0
+* [libcaesium](https://github.com/Lymphatus/libcaesium) >= 0.9.2
 
 ###### 已包含的库
 * [optparse](https://github.com/skeeto/optparse)
@@ -11,8 +11,8 @@
 ----------
 
 ###### 已通过测试的平台
-* Mac OS X Big Sur (v10.15)
-* Ubuntu 20.04
+* macOS Monterey (v12.6)
+* Ubuntu 22.04
 * Windows 10
 
 ----------
@@ -80,6 +80,7 @@ $ caesiumclt -q 0 -RS -o ~/output/ ~/Pictures
 ----------
 
 ###### 变更日志
+* 0.17.0-beta - libcaesium bump
 * 0.16.0-beta - Using libcaesium Rust library
 * 0.15.2-beta - Fixed Windows -RS bug
 * 0.15.1-beta - Fixed rename bug on Windows + "Compressing..." message
diff --git a/src/helper.c b/src/helper.c
index e855977..24155e2 100644
--- a/src/helper.c
+++ b/src/helper.c
@@ -65,7 +65,7 @@ cclt_options parse_arguments(char **argv, C_CSParameters *options) {
                     options->optimize = true;
                 } else {
                     options->jpeg_quality = quality;
-                    options->png_level = parse_png_quality(quality);
+                    options->png_quality = quality;
                     options->webp_quality = quality;
                     options->gif_quality = quality;
                 }
diff --git a/src/helper.h b/src/helper.h
index 0af9b33..63cd15b 100644
--- a/src/helper.h
+++ b/src/helper.h
@@ -37,11 +37,13 @@ typedef enum overwrite_policy {
 typedef struct C_CSParameters {
     bool keep_metadata;
     unsigned int jpeg_quality;
-    unsigned int png_level;
+    unsigned int png_quality;
     bool png_force_zopfli;
     unsigned int gif_quality;
     unsigned int webp_quality;
     bool optimize;
+    int width;
+    int height;
 } C_CSParameters;
 
 extern bool c_compress(const char *i, const char *o, struct C_CSParameters params);
diff --git a/src/main.c b/src/main.c
index 0ac711f..6db24bb 100755
--- a/src/main.c
+++ b/src/main.c
@@ -36,11 +36,13 @@ int main(int argc, char *argv[])
     C_CSParameters compress_options = {
             false,
             80,
-            3,
+            80,
             false,
             20,
             60,
-            false
+            false,
+            0,
+            0
     };
 	//Set them according to command line parameters
 	options = parse_arguments(argv, &compress_options);
diff --git a/src/utils.c b/src/utils.c
index 35fd1d5..f2f45dc 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -157,7 +157,7 @@ int mkpath(const char *pathname) {
     parent[sizeof(parent) - 1] = '\0';
     for (p = parent + strlen(parent); *p != '/' && p != parent; p--);
     *p = '\0';
-    /* try make parent directory */
+    /* try to make parent directory */
     if (p != parent && mkpath(parent) != 0) {
         return -1;
     }
@@ -237,15 +237,6 @@ bool file_exists(const char *file_path) {
     return (stat(file_path, &buffer) == 0);
 }
 
-int strndx(const char *string, const char search) {
-    char *pointer = strchr(string, search);
-    if (pointer == NULL) {
-        return -1;
-    } else {
-        return (int) (pointer - string);
-    }
-}
-
 overwrite_policy parse_overwrite_policy(const char *overwrite_string) {
     if (strcmp(overwrite_string, "none") == 0) {
         return none;
@@ -359,20 +350,4 @@ char *strsep(char **stringp, const char *delim)
     return begin;
 }
 
-#endif
-
-int parse_png_quality(int quality) {
-    if (quality >= 1 && quality <= 39) {
-        return 1;
-    } else if (quality >= 40 && quality <= 49) {
-        return 2;
-    } else if (quality >= 50 && quality <= 59) {
-        return 3;
-    } else if (quality >= 60 && quality <= 69) {
-        return 4;
-    } else if (quality >= 70 && quality <= 79) {
-        return 6;
-    } else {
-        return 7;
-    }
-}
\ No newline at end of file
+#endif
\ No newline at end of file
diff --git a/src/utils.h b/src/utils.h
index cc8c457..2afafe9 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -36,14 +36,10 @@ int mkpath(const char *pathname);
 
 bool file_exists(const char* file_path);
 
-int strndx(const char* string, char search);
-
 overwrite_policy parse_overwrite_policy(const char* overwrite_string);
 
 void print_to_console(FILE* buffer, int verbose, const char* format, ...);
 
-int parse_png_quality(int quality);
-
 #ifdef _WIN32
 char *str_replace(char *orig, char *rep, char *with);
 char *strsep(char **stringp, const char *delim);