Stack Online Tools

Stack Online Tools offers an extensive collection of over 100 free online utilities designed to enhance productivity and efficiency across various domains. Organized into categories such as text processing (case converter, word counter, diff checker), encoding & security (Base64, hashes, QR codes), data/JSON handling, code and development helpers (formatters, minifiers, regex tester), SEO and marketing tools (meta-tag generator, URL slug creator), and image/media utilities, it brings a wide range of tasks together in one place.

Built for speed—with most tools loading in under a second—it emphasizes privacy by handling the majority of processing on the client side and collecting minimal data. No account is required to use the core utilities, commercial use is allowed, and the project is maintained by a team dedicated to making essential online tools accessible to everyone.