About ToolsVault

ToolsVault is a curated collection of 60+ free, browser-based utility tools — JSON formatters, hash generators, color converters, calculators, text utilities, and more — built for developers and everyday users who care about speed and privacy.

Why this site exists

Most online utility tools route your input through a server. That's a problem when the input is sensitive: a JWT belonging to a real user session, an API response with customer data, an internal config file, or a password you're about to use. Every tool here was rebuilt to run entirely in your browser using web standards like the Web Crypto API, TextEncoder/TextDecoder, and the native JSON parser. Nothing you paste, type, upload, or generate is sent to a server, logged, or stored.

What "client-side" actually means

• No accounts. No sign-up, no email gate, no email captures of any kind.
• No telemetry on your input. The text/files/values you put into a tool are processed by JavaScript in your tab and discarded when you close it.
• Standard analytics only. We use Google Analytics for page-view counts and Google AdSense for ads. Both are documented in the Privacy Policy.
• Open behavior. Open browser DevTools → Network tab on any tool page. You'll see no outgoing requests when you use the tool — only the initial page load.

How the tools are built

The site is built with Astro 6 (static site generation), React for the interactive widgets, and Tailwind CSS. It's deployed as a fully static site on Netlify, which means there's no backend handling your data — there is no backend at all, beyond a single endpoint used for the SEO checker tool that fetches public meta tags from a URL you provide.

What the site is not

• It is not a SaaS product. There's no paid tier, no waitlist, no upsell.
• It does not sell your data. There's no data to sell.
• It is not affiliated with the original tool authors of any standard (JSON, JWT, etc.) — these are interpretations of public specs.

Get in touch

Bug reports, feature requests, or feedback are welcome. See the Contact page.