How to Find Duplicate Files in Synology NAS? | Remove Duplicate Photos in Synology Storage

Struggling with storage overload on your Synology NAS? 😩 Discover how to find duplicate files in Synology NAS using quick and effective manual and automated methods! Whether you're on Windows 10 or Windows 11, duplicate files like photos 📸, videos 🎬, and documents 📂 can clog your system and waste valuable space. ==================================================== 🔗 How to Map Synology NAS to Windows PC? 🖥️ Before finding duplicates, you need to map Synology NAS to your system: 🔸 Open File Explorer. 🔸 Click "This PC" → "Map network drive". 🔸 Choose a drive letter (e.g., Z:). 🔸 Enter Synology path: \\[YourNASName]\[SharedFolder]. 🔸 Check Reconnect at sign-in. 🔸 Enter your NAS credentials ✅ Now your NAS is part of your Windows 10/11 file system! 📁 Method 1: Using File Explorer 🗂️ Steps: 🔸 Navigate to the mapped Synology drive. 🔸 Open folders manually and sort files by name, size, or date. 🔸 Compare duplicates side-by-side. 🧠 Limitations: ❌ Time-consuming 💻 Method 2: Using PowerShell ⚡ Steps: Open PowerShell as admin. Use this command: $folderPath = "E:\Files" $files = Get-ChildItem -Path $folderPath -Recurse | Where-Object { -not $_.PSIsContainer } $hashes = $files | Get-FileHash -Algorithm MD5 $duplicates = $hashes | Group-Object -Property Hash | Where-Object { $_.Count -gt 1 } foreach ($group in $duplicates) { $firstFile = $group.Group[0].Path # Keep the first file $duplicateFiles = $group.Group[1..($group.Count - 1)] # All but the first file foreach ($duplicate in $duplicateFiles) { Write-Host "Deleting duplicate file: $($duplicate.Path)" Remove-Item -Path $duplicate.Path -Force # Delete the duplicate } } Write-Host "Duplicate removal complete." Change the "E:\Files" Location to your Actual Folder location. Limitations: ❌ Complex for non-tech users 🧾 Method 3: Using a Batch File 🛠️ Steps: Create a .bat file with a script like: @echo off :: === EDIT THIS PATH === set "target=E:\Files" REM Change to your target folder :: === MAIN SCRIPT === title Duplicate File Remover - SAFE MODE echo Scanning for duplicates in: "%target%" echo. echo [SAFETY CHECK] Duplicates will be listed first. No files will be deleted yet. echo Press Ctrl+C to cancel if the target path is wrong. echo. pause :: Step 1: List duplicates (no deletion) powershell -NoProfile -ExecutionPolicy Bypass -Command "$hash=@{}; Get-ChildItem -LiteralPath '%target%' -Recurse -File -ErrorAction SilentlyContinue | ForEach-Object { $md5=(Get-FileHash $_.FullName -Algorithm MD5).Hash; if($hash.ContainsKey($md5)){Write-Host ('DUPLICATE: ' + $_.FullName + ' (Original: ' + $hash[$md5] + ')')}else{$hash[$md5]=$_.FullName}}" echo. echo ============================================ set /p confirm="Type 'YES' (without quotes) to delete ALL listed duplicates: " if /i "%confirm%" neq "YES" ( echo Operation cancelled. No files were deleted. pause exit /b ) :: Step 2: Delete duplicates echo. echo DELETING DUPLICATES... echo. powershell -NoProfile -ExecutionPolicy Bypass -Command "$hash=@{}; Get-ChildItem -LiteralPath '%target%' -Recurse -File -ErrorAction SilentlyContinue | ForEach-Object { $md5=(Get-FileHash $_.FullName -Algorithm MD5).Hash; if($hash.ContainsKey($md5)){Remove-Item -LiteralPath $_.FullName -Force; Write-Host ('DELETED: ' + $_.FullName)}else{$hash[$md5]=$_.FullName}}" echo. echo OPERATION COMPLETED. Check above for deleted files. pause Run the file and manually check files.txt for duplicates. Limitations: ❌ Basic text output 🧹 Why SysTools Duplicates Finder is the Best Solution? 🔍 ✅ Automatically scans your entire NAS ✅ Supports all file types – photos, docs, media ✅ Quickly remove multiple duplicate files in just clicks! 🚀 ==================================================== Quick Links: Software Page: https://www.systoolsgroup.com/duplica... How Software Works: https://www.systoolsgroup.com/duplica... Purchase Software (Full Version): https://www.systoolsgroup.com/buy/?id... E-mail: [email protected] For Help: support.systoolsgroup.com Visit our popular social media platforms to learn more about us & our products: Facebook:   / systools   X (Twitter): https://x.com/systools Instagram:   / systools   LinkedIn:   / systools   ==================================================== SysTools® and its logos are trademarks or registered trademarks of SysTools Software. Any other trademarks appearing in this video are the property of their respective owners. 🔔 Like, Share & Subscribe for more tech solutions! #HowToFindDuplicateFilesInSynologyNAS #SynologyFindDuplicatePhotos #SynologyStorageAnalyzerDuplicatesDelete #RemoveDuplicateFilesNAS #DuplicateFinderWindows10 #DuplicateFilesSynology #SysToolsDuplicatesFinder #NASStorageCleanup #DeleteDuplicateFilesSynology