Change Case

Easily change case: case converter, uppercase converter, capital letters to lowercase anywhere. Simple & private.

This lightweight utility lets you instantly adjust the capitalization of any content right in your browser. From UPPERCASE headings to lowercase body text, and from camelCase for scripts to snake_case for variables, it handles everything with 15+ built-in styles. No internet required, no account setup — just focus on your writing. 🚀 Three Ways to Transform 1️⃣ Popup — open the toolbar, paste or type content, then choose a style. The converted result appears instantly, ready to copy or undo. 2️⃣ Right‑Click — highlight text on any page and apply a format directly in the same field. For non‑editable selections, the result is copied automatically. 3️⃣ Keyboard Shortcuts — assign your favourite styles to hotkeys and switch between them without lifting your hands from the keyboard. 📋 Supported Styles ▸ UPPERCASE — for strong headings ▸ lowercase — for standard paragraphs ▸ Title Capitalization — first letter of each main word ▸ Sentence style — capital after periods ▸ camelCase — for JavaScript / JSON ▸ PascalCase — for C#, .NET ▸ snake_case — for Python ▸ kebab‑case — for URL slugs ▸ CONSTANT_CASE — for constants ▸ Dot.case — for configuration keys ▸ Train‑Capitalization — for headers ▸ Invert Capitalization — swap upper and lower ▸ Random Capitalization — unpredictable mix The tool works equally well as an uppercase converter and a lowercase converter, adapting to any writing task. ⚡ One Extension, Endless Possibilities You can change case uppercase for headlines, change to lower case to fix accidental caps, change letter case in emails, or change lower case to upper case for emphasis. Need to change to upper case quickly? A single click does it. You can change caps to lower case after copying from a PDF, perform word change case with a right‑click, or change upper case to lower when resetting formatting. Even use change case online – but all processing is local, so it works offline. You can change text case across a whole document, change text to lower case for consistency, and cover every case for change you encounter. Whether you change case text on a webpage or change case word by word, the extension adapts. And you can change upper to lower case in bulk without any hassle. ✨ Beyond Basic Conversion This is more than a case converter – it handles capital letters effortlessly. You can convert case from old documents, get case converted output instantly, and use lower to upper case conversion for titles. A quick to uppercase switch makes headings pop. The built‑in uppercase converter, lowercase converter, and upper case converter eliminate manual reformatting. You can even convert capital letters to lowercase with a single command, turn caps to lowercase for clean text, and rely on a dedicated caps converter for mixed formatting errors. To make it small after accidental caps lock, just pick lowercase. And to convert to uppercase for a strong headline, select the matching style. 💻 Built for Real Work The extension integrates seamlessly into your daily routine. It works on every website – Gmail, social media, Google Docs, online forms, code editors – without any registration or internet connection once installed. The auto light/dark theme follows your system settings, and a built‑in character counter helps you track length. With customizable hotkeys, you can assign your favourite formats to any key combination for ultimate speed. 📌 Who Benefits? ➤ Writers and editors — polish drafts with consistent capitalization ➤ Programmers — switch between naming conventions in seconds ➤ Marketers — format ad copy and social posts effortlessly ➤ Students — fix essay formatting before submission ➤ Anyone who works with text — save time on repetitive manual changes 💡 Tips for Power Users • Combine the popup with right‑click actions to edit multiple paragraphs at once. • Use the character counter to monitor document length while you modify text. • Assign Alt+5–9 to less common styles for even faster workflows. • Highlight a single term to transform just that one word without affecting surrounding content. 🧩 Always Ready, Always Private Everything runs locally on your device. No text is ever uploaded, stored, or shared. The tool uses only the permissions necessary to modify text on pages you choose. There are no ads, no accounts, and no data collection of any kind. ❓ Quick Answers 🔹 Does it work offline? Yes – all processing is local, no internet required. 🔹 Is it really free? Completely free, with no hidden costs or premium plans. 🔹 Can I convert only selected text? Absolutely, use the right‑click menu or popup. 🔹 What about non‑Latin alphabets? It fully supports accented and special Latin characters. Install this utility now and enjoy effortless text transformation right where you type.