That said, always download CCleaner from the to avoid fake or bundled adware. Piriform (now owned by Avast) has addressed past security incidents, and current versions are safe for regular use. Final Verdict For Windows 10 users who want one free tool to clean junk, manage startup items, and maintain privacy, CCleaner Free remains a solid choice. It’s best used manually every few weeks, not as an always-on solution. Combine it with Windows Defender (built‑in antivirus) and periodic disk defragmentation (for HDDs only), and your Windows 10 PC will stay lean and responsive for years.
★★★★☆ (4/5) Loses one star due to upgrade prompts and the need for careful settings customization. Would you like a quick step‑by‑step guide on safely using CCleaner Free for the first time on Windows 10? ccleaner free windows 10