Developer builds 116 browser-based tools that process data entirely offline

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A developer launched 123MiniApps, a collection of 116 small utility tools — including a JSON formatter, image converter, and PDF generator — after growing frustrated with ad-heavy, account-gated alternatives for simple tasks. Every tool runs entirely within the browser, meaning no user data is ever sent to an external server, a claim users can verify themselves via the browser's Network tab. The project was built using native browser APIs such as the Canvas API and Web Crypto API, avoiding third-party libraries and server-side processing. All 116 pages were generated using Python build scripts and a shared component toolkit, ensuring consistent design and making it straightforward to add new tools. The site is available for free at 123miniapps.online, and the developer says he is actively seeking user feedback on which tools are most useful and what is missing.

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