Computer Tricks and Secrets

Short answer: the most useful websites are the free tools that quietly save you time, for converting files, editing images, learning skills, and staying private. Rather than an outdated list of 101 half-dead links, here is a curated set that actually works today, grouped by what you need to do. Bookmark the ones that fit your life. Files and documents iLovePDF and Smallpdf , merge, split, compress and convert PDFs. CloudConvert , convert almost any file type to another. TinyPNG , shrink images without visible quality loss. Images and design Photopea , a free browser Photoshop alternative. remove.bg , delete an image background instantly. Canva , easy graphics and social posts. Unsplash and Pexels , free high-quality photos. Learning and knowledge Khan Academy , free courses on almost everything. freeCodeCamp , learn to code free. Internet Archive , free books, media and the Wayback Machine. Wolfram Alpha , computational answers and math help. Productivity ...

Short answer: To learn everything about a website, chain a few free tools together: WHOIS for ownership, BuiltWith for the tech stack, Similarweb for traffic, the Wayback Machine for history, PageSpeed Insights for performance, and a DNS checker for its records. Each one answers a different question, and together they give you the full picture. Whenever I land on an unfamiliar site, whether I am vetting a company, researching a competitor, or just curious who is behind something, I run through the same quick investigation. Here is the exact toolkit I reach for and what each one tells me. Who owns this website and how do I contact them? Start with a WHOIS lookup. who.is queries domain registrar databases and returns the registration date, registrar, name servers, and, where it is not hidden behind privacy protection, contact details. These days most registrars mask personal data under privacy shields, so do not be surprised if you see a proxy. The registration and expiry dates alo...