About Corexo
Corexo is a free collection of small, focused online tools for developers and for everyday tasks. JSON formatting, hashing, regex testing, color conversion, percentage and loan calculations, encoders, generators — each tool does one job and does it quickly. There is no account, no paywall, and no installation. You open a page, use the tool, and close the tab.
What Corexo is
Corexo exists because the small tools developers reach for every day are often buried under ads, sign-up walls, or bloated interfaces. Our goal is the opposite: a tool you can land on from a search result, use in seconds, and trust. Every utility is designed to be fast to load, simple to understand, and immediately useful — whether you are formatting an API response, decoding a token, or working out a discount.
Privacy by design
Almost every tool on Corexo runs entirely in your browser. The text, JSON, passwords, regex patterns, or numbers you enter are processed on your own device and are not sent to any server. There is no login, so there is no account data to leak. We think a tool you use with sensitive input should not quietly ship that input somewhere — so ours does not. The few details on what third parties (such as our hosting provider and advertising) may see are spelled out plainly in our Privacy Policy.
How Corexo stays free
Corexo is free to use and intended to stay that way. The site is supported by unobtrusive advertising through Google AdSense, which covers hosting and maintenance. The tools work fine with a content-blocker enabled — the ads pay the bills, but they never get in the way of the tool itself.
Who runs Corexo
Corexo is built and operated by Ai-Crafters, a Sole Proprietorship registered with the Philippine Department of Trade and Industry (DTI Business Name Registration). Ai-Crafters works on digital tools, automation, and AI projects, and Corexo is its public collection of free utilities. Full legal and contact details are available on the Imprint page.
Suggestions and feedback
New tools and improvements are added over time, and feedback shapes what comes next. If a tool has a bug, behaves unexpectedly, or you would like to see a utility that is not here yet, get in touch through the Contact page or write to [email protected]. Real reports from people using the tools are the most useful input we get.