StackDevTools
Free online tools for developers and creators
StackDevTools launched on October 18, 2025 with 2 votes. The site was still online in September 2026, 1 year on.
What it does
StackDevTools is a free online platform offering tools like JSON Formatter, Text Diff Checker, JSON to YAML/XML Converter, Case Converter, and Age Difference Calculator — making coding and daily tasks simple, fast, and reliable.
StackDevTools offers free, instant browser-based tools for developers. Format JSON, convert data, generate slugs, compare text, and more. No sign-up required
You built a React app, made an API call, and immediately hit "Access to fetch has been blocked by CORS policy." This guide explains exactly what that error means and… Async await is the feature that finally made asynchronous JavaScript feel manageable. Before it existed, I spent more… Webhooks are one of those concepts that sounds more complicated than it is. Once you understand what they… When you see a padlock icon in your browser’s address bar, an SSL certificate is behind it. SSL… Docker is one of those tools that experienced developers consider essential and beginners find mysterious. The concept is… Markdown is one of the most practical things a…from stackdevtools.com
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Source: Product Hunt launch ↗
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