diff --git a/theBrain/Format-TheBrainNotesYouTubeThumbnail.ps1 b/theBrain/Format-TheBrainNotesYouTubeThumbnail.ps1
new file mode 100644
index 0000000..0be9663
--- /dev/null
+++ b/theBrain/Format-TheBrainNotesYouTubeThumbnail.ps1
@@ -0,0 +1,78 @@
+<#
+.SYNOPSIS
+  Format YouTube thumbnails in TheBrain Notes by replacing local image URLs
+  withto web URLs.
+
+.DESCRIPTION
+  Scan for YouTube thumbnail URLs in the Notes.md files located under the Brain
+  data folder, then back up and modify the Notes.md files to retrieve the
+  YouTube thumbnails from the YouTube API instead of using local storage.
+
+.PARAMETER None
+
+.INPUTS
+  None.
+
+.OUTPUTS
+  None
+
+.EXAMPLE
+  PS C:\> .\Format-TheBrainNotesYouTubeThumbnail.ps1
+
+.NOTES
+  Version:        1.0.0
+  Author:         chriskyfung
+  License:        GNU GPLv3 license
+#>
+
+#Requires -Version 2.0
+
+# Enable Verbose output
+[CmdletBinding()]
+
+$ErrorActionPreference = "Stop"
+
+# Look up the Notes.md files that locate under the Brain data folder and contain the YouTube thumbnail URLs.
+$BrainFolder = . "$PSScriptRoot\Get-TheBrainDataDirectory.ps1"
+$SubFolders = Get-ChildItem -Directory -Path $BrainFolder -Exclude 'Backup'
+$BackupFolder = Join-Path $BrainFolder 'Backup'
+
+$Filename = 'Notes.md'
+$FilenameWithoutExtension = [System.IO.Path]::GetFileNameWithoutExtension($Filename)
+$FileExtension = [System.IO.Path]::GetExtension($Filename)
+
+Write-Host 'Scanning YouTube thumbnail URLs in Brain Notes...'
+
+$MatchInfo = Get-ChildItem -Path $SubFolders -Filter $Filename -Recurse | Select-String '\[\!\[(?<ALT>.*)\]\(\.data\/md-images\/(?<IMAGEFILE>.+)\.jpg(?<width>.*)\)\]\(https:\/\/youtu.be\/(?<VIDEOID>.+?)\)' -List
+
+# For each matching result
+Write-Host 'Backing up and modifying Brain Notes...'
+ForEach ($Match in $MatchInfo) {
+  $FilePath = $Match.Path | Convert-Path # FilePath of the Notes.md file
+  $ParentFolder = Split-Path -Path $FilePath -Parent # Path of the parent folder
+  $BackupLocation = $ParentFolder.Replace($BrainFolder, $BackupFolder)
+  # Backup the Notes.md file
+  $Timestamp = (Get-Item $FilePath).LastWriteTime.ToString('yyyyMMdd_HHmmss')
+  $BackupFilename = "$FilenameWithoutExtension-$Timestamp$FileExtension~"
+  $BackupPath = Join-Path $BackupLocation $BackupFilename
+  Copy-Item -Path $FilePath -Destination (New-Item -ItemType File -Force -Path $BackupPath) -Force
+  # Backup the md-image file
+  $LocalImageFile = $Match.Matches[0].Groups['IMAGEFILE'].Value
+  $LocalImagePath = Convert-Path "$ParentFolder/.data/md-images/$LocalImageFile.jpg"
+  $BackupImagePath = $LocalImagePath.Replace($BrainFolder, $BackupFolder)
+  Move-Item -Path $LocalImagePath -Destination (New-Item -ItemType File -Force -Path $BackupImagePath) -Force
+  Write-Verbose "Created --> '$BackupPath'"
+  # Amend the link of the YouTube thumbnail with UTF8 encoding
+  $Pattern = $Match.Matches.Value
+  $AltText = $Match.Matches[0].Groups['ALT'].Value
+  $VideoId = $Match.Matches[0].Groups['VIDEOID'].Value
+  $NewString = '[![{0}](https://img.youtube.com/vi/{1}/maxresdefault.jpg)](https://www.youtube.com/watch?v={1})' -f $AltText, $VideoId
+  (Get-Content $FilePath -Encoding UTF8).Replace($Pattern, $NewString) | Set-Content $FilePath -Encoding UTF8
+  Write-Verbose "Modified --> '$FilePath'"
+}
+
+Write-Host ('Finished: {0} file(s) found' -f $MatchInfo.Length) # Output the number of files found
+
+$MatchInfo | Format-Table Path | Out-Host # Output the path of the files found
+
+Return
diff --git a/theBrain/Resize-TheBrainNotesYouTubeThumbnail.ps1 b/theBrain/Resize-TheBrainNotesYouTubeThumbnail.ps1
index 1b026ed..96c2888 100644
--- a/theBrain/Resize-TheBrainNotesYouTubeThumbnail.ps1
+++ b/theBrain/Resize-TheBrainNotesYouTubeThumbnail.ps1
@@ -1,9 +1,9 @@
 <#
 .SYNOPSIS
-  Resize YouTube thumbnails down to 30% in theBrain Notes
+  Resize YouTube thumbnails in TheBrain Notes.
 
 .DESCRIPTION
-  Scan all Markdown files in the user's Brain data directory, and apends `#$width=30p$`
+  Scan all Markdown files in the user's Brain data directory, and apends `#$width=50p$`
   to the image URL of embedded YouTube thumbnails within the Markdown files, and backs
   up the original notes to the Backup folder before changing the Markdown file content.
 
@@ -19,7 +19,7 @@
   PS C:\> .\Resize-TheBrainNotesYouTubeThumbnail.ps1
 
 .NOTES
-  Version:        2.0.0
+  Version:        2.1.0
   Author:         chriskyfung
   License:        GNU GPLv3 license
   Original from:  https://gist.github.com/chriskyfung/ff65df9a60a7a544ff12aa8f810d728a/
@@ -32,6 +32,16 @@
 
 $ErrorActionPreference = "Stop"
 
+<#
+.PARAMETERS
+  Depending on the $ImageType parameter, it either finds the default YouTube
+  thumbnails or the resized ones. If the $ImageType is 'resized', it also takes
+  into account the $CurrentWidth parameter to find thumbnails of a specific width.
+#>
+$ImageType = 'default'  # [ValidateSet('default', 'resized')]
+$CurrentWidth = 30  # [ValidateRange(1,100)]
+$NewWidth = 50  # [ValidateRange(1,100)]
+
 # Look up the Notes.md files that locate under the Brain data folder and contain the YouTube thumbnail URLs.
 $BrainFolder = . "$PSScriptRoot\Get-TheBrainDataDirectory.ps1"
 $SubFolders = Get-ChildItem -Directory -Path $BrainFolder -Exclude 'Backup'
@@ -42,10 +52,15 @@ $FilenameWithoutExtension = [System.IO.Path]::GetFileNameWithoutExtension($Filen
 $FileExtension = [System.IO.Path]::GetExtension($Filename)
 
 Write-Host 'Scanning YouTube thumbnail URLs in Brain Notes...'
-$MatchInfo = Get-ChildItem -Path $SubFolders -Filter $Filename -Recurse | Select-String '\/(hq|maxres)default.jpg\)' -List
+
+if ($ImageType -eq 'default') {
+  $MatchInfo = Get-ChildItem -Path $SubFolders -Filter $Filename -Recurse | Select-String '\/(hq|maxres)default.jpg\)' -List
+} else {
+  $MatchInfo = Get-ChildItem -Path $SubFolders -Filter $Filename -Recurse | Select-String ('\/(hq|maxres)default.jpg#\$width={0}p\$\)' -f $CurrentWidth) -List
+}
 
 # For each matching result
-Write-Information 'Backing up and modifying Brain Notes...'
+Write-Host 'Backing up and modifying Brain Notes...'
 ForEach ($Match in $MatchInfo) {
   $FilePath = $Match.Path | Convert-Path # FilePath of the Notes.md file
   $ParentFolder = Split-Path -Path $FilePath -Parent # Path of the parent folder
@@ -57,12 +72,16 @@ ForEach ($Match in $MatchInfo) {
   Write-Verbose "Created --> '$BackupPath'"
   # Amend the link of the YouTube thumbnail with UTF8 encoding
   $Pattern = $Match.Matches.Value
-  $NewString = $Pattern.Replace(')', '#$width=30p$)')
+  if ($ImageType -eq 'default') {
+  $NewString = $Pattern.Replace(')', '#$width={0}p$)' -f $NewWidth)
+  } else {
+    $NewString = $Pattern.Replace('#$width=30p$)', '#$width={0}p$)' -f $NewWidth)
+  }
   (Get-Content $FilePath -Encoding UTF8).Replace($Pattern, $NewString) | Set-Content $FilePath -Encoding UTF8
   Write-Verbose "Modified --> '$FilePath'"
 }
 
-Write-Host 'Finished: ' $MatchInfo.Length 'file(s) found' # Output the number of files found
+Write-Host ('Finished: {0} file(s) found' -f $MatchInfo.Length) # Output the number of files found
 
 $MatchInfo | Format-Table Path | Out-Host # Output the path of the files found