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About this app
JSON Viewer Editor — A Fast JSON Toolkit A fast, privacy-first JSON viewer and editor built for developers and data-focused users. View, edit, validate, and format JSON — completely offline. View & Edit JSON • Code editor with syntax highlighting • Collapsible tree view for easy navigation • Create new files or edit existing ones • Copy or share instantly Import JSON Easily • Paste from clipboard with instant validation • Load JSON from any URL or API endpoint • Built-in templates: API response, config, mock data • Start from scratch with empty files Powerful JSON Tools • Validate — detect syntax errors instantly • Format — beautify with clean indentation • Minify — compress JSON for production • Escape — escape or unescape strings Format Conversion • JSON ⇄ YAML • JSON ⇄ XML • Ideal for API testing and data transformation File Management • Save and organize multiple JSON files • …
App details
What you can learn from JSON Viewer & Editor
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 6 screenshots above are JSON Viewer & Editor's answers to those questions — they're public, they're real, and they made it through Apple's review.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
Take what works into your own screenshots
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