JSON Editor Online vs. JSONedit vs. PostCSS vs. django-mysql Comparison Chart

​JSON Editor Online is a versatile tool designed for viewing, editing, formatting, repairing, comparing, querying, transforming, validating, and sharing JSON data. It offers multiple editing modes, text, tree, and table, to accommodate various user preferences. It supports large JSON files up to 512 MB and provides functionalities such as JSON Schema validation, JSON-to-CSV conversion, and offline usage. Users can load and save JSON data through various methods, including clipboard operations, drag-and-drop, disk storage, and URLs. The tool also features a "Smart JSON Formatting" option for more compact and readable JSON presentations. While the free version includes ads, subscription options are available for an ad-free experience and additional features like private cloud document storage. ​

PostCSS is a versatile tool that transforms CSS using JavaScript plugins, enabling a wide range of functionalities such as linting, supporting variables and mixins, transpiling future CSS syntax, and inlining images. It serves as a framework for developing CSS tools and can be utilized to create template languages similar to Sass and LESS. The core of PostCSS comprises a CSS parser that generates an abstract syntax tree, a set of classes that form the tree, a CSS generator that produces a CSS line for the object tree, and a code map generator for CSS changes. Plugins operate on the object tree, analyzing and modifying it before PostCSS generates a new CSS string reflecting these changes. Notable plugins include Autoprefixer, which adds vendor prefixes, and Stylelint, a modern CSS linter that enforces consistent conventions and avoids errors in stylesheets. PostCSS is employed by industry leaders such as Wikipedia, Twitter, Alibaba, and JetBrains.