diff --git a/README.MD b/README.MD
index 771248c..35fb28b 100644
--- a/README.MD
+++ b/README.MD
@@ -39,7 +39,8 @@ Global install to have the CLI accessible from everywhere on your operating syst
 npm install -g turbo-json.js # install globaly
 ```
 
-No installation needed when using `npx`.
+No installation needed when using [npx](https://www.npmjs.com/package/npx).
+
 ```bash
 npx turbo-json.js [options]
 ```
diff --git a/misc/empty_obj_and_array/empty_array.json b/misc/empty_obj_and_array/empty_array.json
new file mode 100644
index 0000000..fe51488
--- /dev/null
+++ b/misc/empty_obj_and_array/empty_array.json
@@ -0,0 +1 @@
+[]
diff --git a/misc/empty_obj_and_array/empty_obj.json b/misc/empty_obj_and_array/empty_obj.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/misc/empty_obj_and_array/empty_obj.json
@@ -0,0 +1 @@
+{}
diff --git a/misc/special_char_jsons/normal_array.json b/misc/special_char_jsons/normal_array.json
new file mode 100644
index 0000000..414daa0
--- /dev/null
+++ b/misc/special_char_jsons/normal_array.json
@@ -0,0 +1,3 @@
+[
+  "hello"
+]
diff --git a/misc/special_char_jsons/russian_array.json b/misc/special_char_jsons/russian_array.json
new file mode 100644
index 0000000..8476fbe
--- /dev/null
+++ b/misc/special_char_jsons/russian_array.json
@@ -0,0 +1,3 @@
+[
+  "Лорем ипсум долор сит амет"
+]
diff --git a/src/cli.js b/src/cli.js
index 2581f12..ff4d470 100755
--- a/src/cli.js
+++ b/src/cli.js
@@ -24,7 +24,12 @@ program
     'Check if output JSON is a valid JSON',
     false
   )
-  .option('-q, --quiet', 'Quiet mode, no logs are outputed', true)
+  .option('-q, --quiet', 'Quiet mode, no logs are outputed', false)
+  .option(
+    '-b, --buffer-size <number>',
+    'Size of the buffer containing the maximum data kept in memory at any time',
+    1000
+  )
   .action(async (directory, options) => {
     await combineJson(directory, options)
   })
diff --git a/src/combine-json.js b/src/combine-json.js
index e6cea27..52da229 100755
--- a/src/combine-json.js
+++ b/src/combine-json.js
@@ -16,8 +16,6 @@ const {
   logFailedOutputValidityCheck,
 } = require('./log')
 
-const BUFFER_SIZE = 1000
-
 async function combine({
   inputFiles,
   inputDirPath,
@@ -25,6 +23,7 @@ async function combine({
   validateInput,
   validateOutput,
   quiet,
+  bufferSize,
 }) {
   createOutputArrayFile(outputFilePath)
   const numberOfFiles = inputFiles.length
@@ -41,7 +40,7 @@ async function combine({
 
       const { isArray, startPosition, empty } = jsonRootType({
         fd: inputFileFd,
-        bufferSize: BUFFER_SIZE,
+        bufferSize: bufferSize,
       })
 
       let stopPosition = undefined
@@ -49,11 +48,12 @@ async function combine({
       if (isArray) {
         stopPosition = closingArrayIndex({
           fd: inputFileFd,
+
           position:
-            fileSize(inputFile) - BUFFER_SIZE > 0
-              ? fileSize(inputFile) - BUFFER_SIZE
+            fileSize(inputFile) - bufferSize > 0
+              ? fileSize(inputFile) - bufferSize
               : 0,
-          bufferSize: BUFFER_SIZE,
+          bufferSize: bufferSize,
         })
       }
 
@@ -132,6 +132,7 @@ async function combineJson(
     validateInput = false,
     validateOutput = false,
     quiet = false,
+    bufferSize = 1000,
   }
 ) {
   const { inputDirPath, filesName } = inputFilesAndDir({ inputDir })
@@ -144,6 +145,7 @@ async function combineJson(
     validateInput,
     validateOutput,
     quiet,
+    bufferSize,
   })
 }
 
diff --git a/src/json-root-type.js b/src/json-root-type.js
index f801d8e..4ea6160 100644
--- a/src/json-root-type.js
+++ b/src/json-root-type.js
@@ -22,7 +22,6 @@ function findClosingArrayIndex({ fd, buffer, position }) {
 
 function closingArrayIndex({ fd, position, bufferSize = 1000 }) {
   let buffer = new Int8Array(bufferSize)
-
   return findClosingArrayIndex({ fd, buffer, position })
 }
 
diff --git a/src/log.js b/src/log.js
index b9a7c52..67637db 100644
--- a/src/log.js
+++ b/src/log.js
@@ -5,7 +5,7 @@ const logSuccessfullWrite = (fileName, index, numberOfFiles) => {
     chalk.green(
       'file: ' +
         chalk.blue.underline.bold(fileName) +
-        ` has been added! index: ${index}, number of files: ${numberOfFiles}`
+        ` has been added! index: ${index}/${numberOfFiles}`
     )
   )
 }