Stack Online Tools – Developer Utilities

Productivity and developer tools with JSON formatter, text converters, password generator, SEO tools, and calculators.

Stack Online Tools is an all-in-one Chrome productivity extension that brings together essential developer tools, text utilities, SEO helpers, and content creator tools in one clean, easy-to-use interface. Instead of installing multiple extensions or jumping between websites, Stack Online Tools gives you instant access to the most commonly used online tools, directly from your browser toolbar. Designed for developers, marketers, writers, designers, SEO professionals, and everyday users, this extension helps you work faster, cleaner, and smarter. Key Features & Tool Categories Developer & Code Utilities JSON Formatter & Validator – format, beautify, and validate JSON instantly JSON to YAML / YAML to JSON Converter Base64 Encoder & Decoder URL Encoder & Decoder HTML, CSS & JavaScript Minifier HTML to Markdown / Markdown to HTML Converter Robots.txt Generator for SEO and crawling rules Perfect for anyone looking for developer utilities, code formatter tools, or a fast JSON formatter Chrome extension. Text & Content Tools Text Case Converter (uppercase, lowercase, title case, camel case, snake case, kebab case) Word Counter & Character Counter URL Slug Generator Text Repeater Text Reverser Remove Duplicate Lines Line Counter & List Randomizer Ideal for content creators, writers, SEO specialists, and bloggers. Security & Password Tools Secure Password Generator (custom length & rules) Password Strength Checker Useful for developers, admins, and anyone who needs strong, secure passwords quickly. Image & File Converters PNG to JPG / JPG to PNG Converter PDF to JPG / JPG to PDF (opens secure web tool when needed) Calculators & Generators Age Calculator Percentage Calculator Random Name Generator Random Address Generator Why Choose Stack Online Tools? ✔ All-in-one productivity toolkit ✔ Lightweight & fast Chrome extension ✔ Privacy-first — most tools run locally in your browser ✔ No sign-up required ✔ Clean, modern, distraction-free UI ✔ Replaces multiple single-purpose extensions Whether you’re looking for developer tools, online converters, SEO tools, or a reliable Chrome productivity extension, Stack Online Tools has you covered. Who Is This Extension For? Developers & programmers SEO professionals & digital marketers Content creators & writers Web designers Students & everyday Chrome users