Why WeChat Doesn’t Actually Duplicate Files and How to Clean Up Storage Safely

A blogger posted a Python script that supposedly removes duplicate WeChat files quickly, arguing that WeChat stores each forwarded file separately and thus consumes a lot of storage.

In reality, WeChat uses hard‑link technology: the same file sent to multiple contacts is stored only once, and the apparent (1), (2) suffixes are merely to avoid filename conflicts.

The shared script simply looks for filenames containing such suffixes and deletes them, which can break message links and potentially delete important data.

WeChat’s official team warned that the script is ineffective for storage reduction and may cause adverse effects, advising users not to try it.

To free up space, WeChat provides built‑in cleaning options: open Me → Settings → General → Storage and clear cache, manage large files in chat records, disable automatic media download, and enable deep cleaning if available.

These steps safely reduce storage usage without risking data loss.