About Supertools

Supertools is a collection of 83 free online tools built for developers, writers, designers, and everyday creators. Every tool works directly in your browser — no downloads, no sign-ups, no hidden fees.

Why We Built This

We got tired of hunting down dozens of single-purpose websites every time we needed to format JSON, generate a password, calculate loan interest, or test a regex. Most "free tool" sites are loaded with trackers, watermarks, and paywalls. Supertools puts everything in one clean, fast, private place.

What Makes Supertools Different

No sign-up required. Every tool works immediately. No accounts, no email verification, no "create a free account to continue" pop-ups. Just open the tool and use it.

Privacy-first. Tools that process data do so in your browser when possible. AI-powered tools use our secure API with industry-standard encryption. We don't sell or share your data.

AI-powered when it helps. Over 25 tools use our AI engine to help you write better code, generate content, fix grammar, and solve problems faster. Free users get daily credits — Pro users get unlimited access.

Ad-supported and accessible. Most tools are completely free, supported by non-intrusive ads. A Pro subscription removes ads and unlocks unlimited AI usage.

Our Tool Categories

Finance tools: Loan calculator, ROI calculator, salary converter, and more. Developer tools: JSON formatter, Base64 encoder, regex tester, cron parser, JWT decoder, and others. AI tools: Resume rewriter, code explainer, SQL builder, prompt enhancer, and 20+ more. Writing tools: Grammar checker, case converter, word counter, paraphrasing. Design tools: Color picker, CSS grid generator, gradient creator. Plus utilities like password generator, QR code maker, world clock, and PDF merger.