Add Suffix to Filenames

Append a custom suffix string to the end of filenames before the file extension.

How It Works & Processing Standards

Append a custom suffix string to the end of filenames before the file extension.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 100MB
  • Mobile max file size: 40MB

Add Suffix to Filenames is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Add Suffix to Filenames

  1. 1
    Upload FilesChoose files to modify.
  2. 2
    Enter SuffixType custom suffix (e.g. "_approved").
  3. 3
    Download OutputDownload updated files.

Common Use Cases

  • Tagging photos or documents with status markers like "_edited" or "_final"
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