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A free browser-based tool to convert any code snippet into a stunning shareable image. Pick a syntax theme, choose a gradient background, and export a 2× retina PNG in under a minute — no signup required.

A free browser-based JSON flattener. Paste deeply nested JSON, get flat dot-notation key-value pairs in seconds. Supports unflattening, custom delimiters, and array handling. 100% client-side.

Learn what RRULE strings are, how the RFC 5545 iCalendar recurrence format works, and how to use RRULE Generator to build and debug recurring event rules instantly — no syntax memorisation required.

A free browser tool lets you generate pulse and shimmer CSS skeleton loading placeholders for cards, lists, profiles, articles, and tables — customize colors, speed, and border radius, then copy the zero-dependency HTML and CSS.

Free online JSON to .env converter — paste a JSON object and get a ready-to-use .env file in seconds. Supports nested key flattening, smart quoting, copy to clipboard, and .env → JSON reverse conversion. 100% client-side, no data uploaded.

Generate a valid Chrome Extension Manifest V3 JSON file instantly. Learn how to use the free Chrome Extension Manifest Generator to pick permissions, configure content scripts, and set up a service worker — no signup needed.

A free browser tool that converts any JSON object to Python dataclasses, TypedDict definitions, or Pydantic v2 models in one click. No login, no install — paste JSON, copy Python.

Free online HTML form builder — add fields, configure validation, preview the rendered form, and copy semantic HTML5 markup in seconds. No signup, 100% client-side.

Generate correct srcset and sizes HTML attributes instantly. Preview browser image selection at every viewport width, copy a production-ready img tag, and ship faster — all client-side, no upload needed.

A free visual tool that constructs Linux find commands from a form. Set file type, name, size, mtime, permissions, and exec actions — copy the ready command in one click. No flag memorisation needed.

ESLint 9 dropped the old .eslintrc format. Learn what changed, why flat config is better, and how to generate a working eslint.config.js for React, Next.js, Vue, or Node.js in under a minute.

Learn exactly how every SQL JOIN type works — INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOIN — with Venn diagrams, sample data, and copy-ready SQL. Completely free and runs in your browser.