Hey Product Hunt community! 👋

I'm Chris, an independent developer from the Netherlands, and I built MayOnlineTools.

Like many of you, I got completely tired of bloated online converters: websites drowning in deceptive ads, 30-second countdown timers, subscription paywalls for basic math, and worst of all—uploading sensitive source code, JSON payloads, personal photos, or credentials to unknown cloud servers.

I wanted something clean, ultra-low latency, and genuinely private. So I built MayOnlineTools on a strict architectural guarantee: 🔒 100% Client-Side Execution — Zero server computation, zero tracking telemetry, and zero user data ever leaving your browser sandbox.

Here's what you can explore today:

• 144+ Interactive Utilities: Full suites for Calculators (Math & Finance), Converters (JSON, YAML, SQL DDL to TypeScript/Zod, SVG, Base64), and Developer Tools (.htaccess, CSP, Subnets, Regex).

• ⛓️ Pinned Tool Chain: Chain multiple text, regex, and data transformations into automated multi-step pipelines. • 🤖 Local AI Studio: Real open-source neural models running directly on your own graphics card via WebGPU (OpenAI Whisper Speech-to-Text in 5 languages, Qwen2.5 Code & General Assistant, MODNet Background Remover, DistilBART Summarizer, and BERT 5-star sentiment analysis). Once cached, they run 100% offline with 0 MB network transfer!

• 📚 49 Master Engineering Runbooks: In-depth production cheat sheets and optimization guides for Linux sysadmins, Docker, Windows, and modern API security.

Everything is completely free, runs without an account, and is built using Astro, Vue 3, and Tailwind CSS.

I'd love your honest feedback:

How does the WebGPU Local AI performance feel on your device/GPU?
Are there any daily developer tools or converters you find yourself missing that I should add next?
Any and all feedback, feature requests, or constructive criticism are warmly welcome — I am continuously improving the platform and want to make this the best, fastest, and most reliable private toolkit on the web!

Thank you so much for checking it out and for supporting me! 🚀