About DevUtils

Privacy-first developer tools that run entirely in your browser. No servers, no tracking, no data collection.

What is devutils.sh?

DevUtils is a collection of free, privacy-first developer tools designed for developers, SREs, and security professionals. Every tool runs 100% client-side in your browser using JavaScript - your data never touches our servers.

Whether you need to decode a JWT token, format JSON, generate hashes, or analyze SSL certificates, DevUtils provides instant results without compromising your privacy. No accounts, no tracking, no data collection - just tools that work.

All tools are free forever, with no paywalls or feature restrictions. We believe essential developer utilities should be accessible to everyone.

Why We Built This

As developers, we frequently use online tools to decode tokens, format data, and analyze certificates. But there was always a nagging concern: where is this data being processed, and is it being retained?

When you paste a JWT token into an online decoder, does it get logged? When you upload an SSL certificate to check its expiration, where does that data go? Most tools don't make this clear, and many do send your data to their servers.

This is particularly concerning when working with sensitive data - API keys, authentication tokens, production certificates, or proprietary JSON structures. Even if a service claims not to log data, there's no way to verify it.

The solution? Build tools that process everything client-side. No server-side processing means no data transmission, no logging, no retention - your data stays in your browser where it belongs.

DevUtils was born from this need for trustworthy, transparent developer tools that respect your privacy by design.

Our Principles

Privacy by Design

Every tool is designed to process data entirely in your browser. No servers, no APIs, no data transmission. Your data never leaves your device - not even by accident.

Always Free

All tools are free forever. No accounts required, no paywalls, no feature restrictions, no "premium" tiers. Developer tools should be accessible to everyone.

No Tracking

No analytics, no tracking pixels, no cookies (except essential ones), no fingerprinting. We don't know what tools you use or what data you process, and we like it that way.

Transparent

We're upfront about how every tool works. All processing is client-side, visible in your browser's developer tools. No hidden server calls, no sneaky API requests - you can verify everything yourself.

Fast & Offline-Capable

No server round-trips means instant results. Once a page loads, it works offline. Perfect for air-gapped environments, trains, planes, or just when your internet is flaky.

About the Creator

DevUtils is created and maintained by Bijaya Budhathoki, a developer who believes that privacy should be the default, not a premium feature.

If you have feedback, feature requests, or bug reports, feel free to reach out via the contact information on bijayabudhathoki.com.

Technology

DevUtils is built with modern web technologies to ensure fast performance and reliability:

  • Astro - Static site generation for optimal performance
  • React - Interactive UI components with client-side hydration
  • Tailwind CSS - Clean, consistent design system
  • Cloudflare Pages - Fast, global CDN hosting
  • Client-side libraries - crypto-js, jsrsasign, jose for cryptographic operations

The entire site is statically generated and served via CDN. No backend, no databases, no server-side processing - just static HTML, CSS, and JavaScript.