Saving valid proxies into .txt or .csv formats for easy use in other software.

A high-quality proxy checker (like HieuCT or its equivalents) typically includes:

The ability to check hundreds of proxies simultaneously to save time.

If you cannot verify the HieuCT source, consider reputable alternatives like the ProxyScrape Desktop App or browser-based tools that require no download. Key Features to Look For

Executable files ( .exe ) inside .rar archives can carry malware. It is highly recommended to scan any downloaded file with antivirus software before execution.

Gauge latency (ping) and response times, which are critical for tasks like web scraping or SEO. Downloading "HieuCT.rar" and Safety

A live console that updates as each proxy is tested. Safe Usage Best Practices

Online Proxy Checker - Free Browser-Based Proxy Testing Tool