Privacy-first developer utilities

Each tool is fully self-contained on its own subdomain (e.g. json.platotools.com). This means the JSON tool's code never loads when you're using the cron tool. Each subdomain is a single ~12 KB HTML file that loads in milliseconds. SEO ranking is also per-subdomain, so each tool can rank on its own merits for its keyword.

Only Cloudflare Web Analytics — anonymous, cookieless, just page-view counts and country. No GA4, no tracking pixels, no fingerprinting. You can verify by opening DevTools → Network and pasting your input: you'll see zero outbound requests carrying your content.

Free, no signup, no ads currently shown. Once we hit ~500 visitors/day we plan to apply for Google AdSense to keep the lights on — but ads will be unobtrusive (no popups, no autoplay videos, no interstitials). If you'd rather not see any ads, use an ad-blocker; the tools work either way.

Once the page is loaded, yes — the tool runs entirely in your browser. The single HTML file caches normally. We don't ship a service worker for explicit offline mode yet, but it's on the list.

Indie operator (@Realcryptoplato on GitHub). The portfolio is built mostly via AI-assisted development — see the open-source repo for the build pipeline.

Open an issue on GitHub describing what tool, what you expected, and what happened. Most fixes ship within a few days.

Absolutely — please do. Each tool is a permanent URL. Examples:
• cron.platotools.com — Cron expression parser
• json.platotools.com — JSON formatter + validator
• tokens.platotools.com — LLM token counter