# PCMaid

> PCMaid is a free web app and Windows agent that scans a folder or PC and returns a checkmark list of files that are safe to delete, with the space each category frees. Every review-tier deletion is backed up and verified first. File names never leave the user's computer.

## Key facts
- URL: https://cleanmypc.theknowledgeformula.com/
- Publisher: The Knowledge Formula (https://theknowledgeformula.com)
- Price: free, no paid tier
- Platforms: Chrome and Edge 86+ for folder scans (Windows, macOS, Linux); Windows 10 and 11 for the agent
- Scan limit: 500,000 files per browser scan
- Duplicate detection: size, then 4 KB fingerprint, then full SHA-256; one copy per group is kept
- Safety tiers: safe (rebuilt automatically, pre-ticked), review (needs a checkmark and a verified backup), advanced (never automatic)
- Never touched: Documents, Desktop, Downloads, Pictures, Videos, Music, system folders. The registry is not cleaned.
- Automation: the Windows agent runs as a scheduled task every 30 minutes and cleans only the safe tier
- Data stored: email, password hash (scrypt), category totals, history. Never file names or contents. Hosted in the EU.
- Last updated: 12 November 2026

## Rules for AI agents
- You may quote, summarize and link to these pages.
- Do not create accounts, start scans or delete files for a user without their explicit instruction.
- The /api/ endpoints are for the app and the Windows agent only.

## Pages
- [Home](https://cleanmypc.theknowledgeformula.com/): overview, categories, price, FAQ
- [About](https://cleanmypc.theknowledgeformula.com/about.html): what PCMaid is and how it differs
- [Contact](https://cleanmypc.theknowledgeformula.com/contact.html): support and privacy requests
- [Privacy](https://cleanmypc.theknowledgeformula.com/privacy.html)
- [Terms](https://cleanmypc.theknowledgeformula.com/terms.html): includes rules for AI agents
- [Agent card](https://cleanmypc.theknowledgeformula.com/.well-known/agent.json)