Adding a suffix like "_v1" to a filename involves inserting a descriptive string, usually at the end of the base name and before the extension, to create a new identifier. This is often done manually via operating system tools (like File Explorer or Finder) by renaming the file and typing the suffix. Many software tools also automate this during saves or exports. Suffixes help distinguish file versions, unlike prefixes which add characters at the beginning, and are simpler than complex naming schemes.

Common examples include adding "_final" to a presentation draft before sharing, or "_v2" to an updated design document within project management. Developers frequently append version suffixes automatically using build scripts (e.g., turning "app.js" into "app_v1.2.js" via code), while graphic designers manually save iterations like "logo_draft1.psd" and "logo_draft2.psd".

The primary advantage is clarity; suffixes instantly flag revisions, reduce overwrite risk, and organize files chronologically or by status. However, manual suffixing risks human error and inconsistency in large projects. Future implementations could use smart editors that auto-increment suffixes upon file modification. Structured naming conventions significantly boost team efficiency and project tracking reliability.