diff --git a/pages/download_as_binary.html b/pages/download_as_binary.html
new file mode 100644
index 00000000..63df4be3
--- /dev/null
+++ b/pages/download_as_binary.html
@@ -0,0 +1,68 @@
+<h1>Download base64 or dataURL - as binary file.</h1>
+Base64 or dataURL:<br>
+<textarea id="base64" rows="5" cols="50" placeholder="Paste here the base64 or dataURL"></textarea>
+<br>
+filename.extension: <input id="filename" type="text" placeholder="filename.extension" onclick="this.focus();this.select();">
+<button onclick="download_as_binary()">Download as binary...</button>
+<br>
+<br>
+<div id="download_link"></div>
+<script>
+//Function for checking, without throw error, is str base64-encoded or not. return true/false.
+function isBase64(str) {
+    try {
+        return btoa(atob(str)) == str;
+    } catch (err) {
+        return false;
+    }
+}
+
+function is_dataURL(str){
+	return (str.indexOf('data:')!==-1 && str.indexOf('base64,')!==-1 && isBase64(str.split('base64,')[1]));
+}
+
+function download_as_binary(){
+	var result_div = document.getElementById('download_link');						//get div with result link
+	result_div.innerHTML = '';														//clear this
+	
+	var textarea = document.getElementById('base64');								//get textarea
+	var maybe_base = textarea.value;												//get value from this
+	var filename = document.getElementById('filename').value || undefined;			//set filename or undefined
+	if(typeof filename==='undefined'){												//if still undefined
+		//generate random filename
+		var len = 20;/*<--String Length ...*/for(var s = "", rem = 100000000, n = Math.random()*10*rem; s.length < len;){rem=10*rem%n; s+= (rem%10!==0)?rem.toString(36).replace(".", "").substr(0, len-s.length):"";}//document.write("<br>", 's.length: ', s.length, 's: ', s);
+		filename = s;
+	}
+	filename = filename+((filename.indexOf('.')==-1)?'.bin':'');					//if filename was generated
+	
+	if(maybe_base===''){
+		result_div.innerHTML = 'Empty textarea';
+		return false;
+	}else if(maybe_base.trim()===''){
+		result_div.innerHTML = 'Empty trimmed textarea';
+		return false;		
+	}
+	if(is_dataURL(maybe_base)){
+		maybe_base = maybe_base.split(',')[1];
+	}
+	var attempt = 0;
+	
+	while(true){
+		if(attempt>=2){					//trimmed textarea value - not base64
+			//break;					//exit from cycle
+			result_div.innerHTML = 'Trimmed textarea value - not base64.';
+			return false;				//exit from function
+		}else if(isBase64(maybe_base) && attempt<2){	//try without trim textarea value
+			var result = 'Download <a href="data:application/octet-stream;base64,'+maybe_base+'" download="'+filename+'">'+filename+'</a>';
+			result_div.innerHTML = result;
+			break;
+		}else if(is_dataURL(maybe_base)){
+			maybe_base = maybe_base.split(',')[1];
+		}else{
+			result_div.innerHTML = 'Base64 not found in textarea value. Try trim this...';
+			maybe_base = maybe_base.trim();
+			attempt++;
+		}
+	}
+}
+</script>
\ No newline at end of file
diff --git a/scripts/img2base64.js b/scripts/img2base64.js
index 66af6805..032c9ea5 100644
--- a/scripts/img2base64.js
+++ b/scripts/img2base64.js
@@ -60,7 +60,7 @@ var _loader=$('#inputFileToLoad')[0];
 
 function updateImage(loader) {
   _loader = loader;
-  var file = _loader.files[0];
+  var file = _loader.files[0];			//After selection file, the filename available in - file.name; filetype in - file.type.
   var reader = new FileReader();
   reader.onloadend = function() {
     var res = reader.result;
@@ -72,7 +72,8 @@ function updateImage(loader) {
           $('.output').find('img').attr('src', 'error');
           $('#info').css('color','red');
         } else {
-          $('#result').text('[xmg='+res.substring(res.indexOf(',')+1)+']');
+//          $('#result').text('[xmg='+res.substring(res.indexOf(',')+1)+']');			//old code with bb-code xmg
+          $('#result').text('[file name="'+file.name+'" type="'+file.type+'"]'+res.substring(res.indexOf(',')+1)+'[/file]'); //bb-code file, with filename and mime-type, like in karasiq-nanoboard.
           $('.output').find('img').attr('src', res);
           $('#info').css('color','black');
         }
@@ -118,7 +119,7 @@ function updateImage(loader) {
           $('#result').text('error');
         } else {
           $('#info').css('color','black');
-          $('#result').text('[xmg='+dataURL.substring(dataURL.indexOf(',')+1)+']');
+          $('#result').text('[xmg='+dataURL.substring(dataURL.indexOf(',')+1)+']');		//saving backward compatibility with old zipJPEGs and bb-code xmg.
         }
       };
       var shrd = canvas.toDataURL();
diff --git a/scripts/nanoclient.js b/scripts/nanoclient.js
index 53cb024f..bfe64fba 100644
--- a/scripts/nanoclient.js
+++ b/scripts/nanoclient.js
@@ -1,3 +1,12 @@
+//Function for checking, without throw error, is str base64-encoded or not. return true/false.
+function isBase64(str) {
+    try {
+        return btoa(atob(str)) == str;
+    } catch (err) {
+        return false;
+    }
+}
+
 function numSuffix(numStr) {
   if (numStr.endsWith('11')) return 's';
   if (numStr.endsWith('1')) return '';
@@ -93,9 +102,96 @@ function addPost(post, appendFunc, hasShowButton, short) {
         }, _post_delete_timeout);
       }));
   appendFunc(d);
+  
+  //This code need function isBase64(str), and this function in beginning of this script
+  var post_content = escapeTags(Base64.decode(post.message));
+  //console.log(post_content);
+
+  //detect files
+  if(post_content.indexOf('[file')!==-1){												//if bb-code "file" found
+	var files_array = post_content.split('[file');										//split by file
+	//console.log('files_array', files_array);											//show array in console
+	for(i=1;i<files_array.length;i++){													//for each element up to array length
+		//console.log('files_array[i]', files_array[i]);									//show element
+		var maybe_base = files_array[i].split('"]')[1].split('[/file]')[0];					//split by '"]', and "[/file]" to get base64
+		if(isBase64(maybe_base)){																//check is base64
+			//console.log('base64!');																//if yes - show notification in console
+			//console.log('base64! maybe_base: ', maybe_base);										//with base64
+																										//and try to replace file to download link...
+			var split_by_base = post_content.split(maybe_base);										//split post by this base64
+			var before_base = split_by_base[0];														//here contains previous part of post and filename with filetype
+			var split_by_file = before_base.split('[file');											//split by '[file'. In the second element must be filename and filetype.
+
+			var check_filename_regexp = /^[-\w^&'@{}[\],$=!#().%+~ ]+$/;							//regexp to test is filename correct?
+
+			var part = 1;																			//first part of array is 1 must contains filename and filetype
+			var filename = split_by_file[part].split('name="')[1].split('"')[0];						//set filename by splitting this by 'name="' and '"'
+			//console.log('filename', filename);														//show this
+			var filetype = split_by_file[part].split('type="')[1].split('"')[0];						//set filetype by splitting this by 'type="' and '"'
+			//console.log('filetype', filetype);														//show filetype
+
+			
+			while(true){																			//cycle without end
+				//if(typeof split_by_file[part+1]=='undefined'){break;}									//if no any element - break
+				if(!check_filename_regexp.test(filename)){												//if no filename there
+					part++;																					//check next part of splitted post
+					filename = split_by_file[part].split('name="')[1].split('"')[0];						//get filename
+					//console.log('filename', filename);														//show this
+					filetype = split_by_file[part].split('type="')[1].split('"')[0];						//get filetype
+					//console.log('filetype', filetype);														//show this.
+					continue;																				//and continue cycle without running next code...
+				}
+				
+				//exception for post 946d50e33c413a93d7c963424e0846d9, where is code contains "[file"
+				if(filename==="'+file.name+'" && filetype === "'+file.type+'"){ 					//if filename and filetype as in the code
+					part++;																				//check next part of splitted string
+					filename = split_by_file[part].split('name="')[1].split('"')[0];					//get filename
+					//console.log('filename', filename);													//show this
+					filetype = split_by_file[part].split('type="')[1].split('"')[0];					//get filetype
+					//console.log('filetype', filetype);													//show this
+					continue;																			//and continue cycle, without running next code...
+				}
+				
+				else{																				//else, if not code and filename exist and valid...
+				//	console.log(																		//show checking results
+				//		"(check_filename_regexp.test(filename))",
+				//		(check_filename_regexp.test(filename)),
+				//		"(filename==='+file.name+' && filetype === '+file.type+')",
+				//		(filename==='+file.name+' && filetype === '+file.type+'),
+				//		'part', part
+				//	);
+					break;																				//and break from cycle...
+				}
+			}
+			//when filename and filetype is valid...
+
+			//build link to download this file.
+			var html_link = '<a href="data:'+filetype+';base64,'+maybe_base+'" download="'+filename+'">['+filename+']</a>'
+			//and add link to download this as binary,
+			//with green base64 encoded PNG image to this link.
+			+'<a href="/pages/download_as_binary.html" target="_blank"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/\
+			9hAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABCElEQVQ4jZ3TMUoDQRjF8V+SRURExQN4Ai+gFkkjegqxsQwSQcQiMGgrIugJvEB6beIRcgUPIBoExSJY7MRk\
+			18kG/WBZ9r3v/75hZqcmVcEBLrESlSG6gvtyay0BL+ANiyXnE6uCr2mxnpifJWBRy8piKiClzfSqmv8d8KcVTDYx2MBafJ5mBDTxilfBcznxEIMKWPQGOE\
+			ot6QLXFfC47tAdfzR+5D5aHuQ/z1YF3BYmQqNgT0KWsT0PzgOCfS0v+j6mQh6xhJ3Yd4PjAhysa2nW0cNmITZvPMMpztEpT45ML8NI6uxz4OqXXqxRJr9p\
+			u/GSjMbGDKA+9d7DMEMHtziZM61c72h/A3foMuoBqRh/AAAAAElFTkSuQmCC"></a>';
+
+			//console.log('html_link', html_link);																				//show this link...
+			
+			post_content = post_content.split('[file name="'+filename+'" type="'+filetype+'"]'+maybe_base+'[/file]').join(html_link);	//and replace bb-code file to this link.
+
+			//console.log('post_content: ', post_content);																				//show results...
+		}else{																								//not base64 in the middle of [file][/file]
+			//console.log('not base64', maybe_base);															//do nothing
+		}
+		//and continue replace files to links in all post, splitted by file-tag, again and again...
+	}
+	//console.log('post_content: ', post_content);																//show post in the end and continue script
+  }//or continue script without replacing...
+
   var inner = $('<div>')
     .addClass('post-inner')
-    .html(applyFormatting(escapeTags(Base64.decode(post.message))))
+//    .html(applyFormatting(escapeTags(Base64.decode(post.message))))											//old code
+    .html(applyFormatting(post_content))																		//<--- HERE using replaced contend of post
     .appendTo(d);
   detectPlacesCommands(inner);
   d.find('img').click(function(){
@@ -107,7 +203,7 @@ function addPost(post, appendFunc, hasShowButton, short) {
   if (imgcnt > 0) {
     for (var i = 0; i < imgcnt; i++) {
       var img = imgs[i];
-      if (img.src.startsWith('data:image/jpeg;base64,UEsDB')) {
+      if (img.src.startsWith('data:image/jpeg;base64,UEsDB')) {//if PK at first - then zip						//saving backward compatibility with old zipJPEGs
         $(img).replaceWith($('<a download=file'+(i+1)+'.zip href='+img.src.replace('image/jpeg','application/zip')+'>[file'+(i+1)+'.zip]</a>'));
       }
     }