Convert Case

Convert text in your browser between UPPER CASE, lower case and more

Tired of retyping text just to change the case? Select text anywhere in your browser, right-click, and convert it instantly - no copy-pasting to external tools. Convert Case is a fast, lightweight text case changer with 16 conversions, keyboard shortcuts, automatic clipboard copy, and full UI translations in 15 languages. Change case directly in your browser - select, right-click, done. Works on regular web pages, Google Docs, Reddit, and more. Writing conversions: UPPER CASE, lower case, Title Case, Sentence case, Capitalized Case, No Accents Developer conversions: camelCase, PascalCase, snake_case, CONSTANT_CASE, param-case (slugify), dot.case, path/case Utility conversions: Alternating Case, Inverse Case, No Case (plain lowercase words) Features: - Change case in place via right-click context menu - Keyboard shortcuts for quick access (Alt+U, Alt+L, Alt+C, Alt+A) - or set your own - Copy After Conversion - automatically copies converted text to the clipboard - Automatic proper noun casing in Title Case, Sentence case, and Capitalized Case - thousands of names, places, brands, and acronyms are recognised and cased correctly (Paris, IBM, Abu Dhabi, iOS) - toggle off or add your own custom terms in Settings - Counts submenu with live character, word, sentence, and line counts for the current selection - Configurable Title Case options (ignore words like "the", "and", "of") Works with: Google Docs (Shift+right-click or keyboard shortcut), Reddit, Disqus, WYSIWYG editors, TinyMCE, and iframe-based content. Privacy: All conversions are performed locally on your device. Convert Case does not collect, transmit, or store any user data. Languages: English, British English, Deutsch, Ελληνικά, Español, Filipino, Français, हिन्दी, Magyar, Italiano, Polski, Português, Slovenščina, Türkçe, Українська. Automatically follows your browser's language; can be overridden in Settings. Changelog: - 2.3.0 - New "Proper Nouns" setting replaces Ignored Words and Correct Words; toggle auto-correction of built-in proper nouns and abbreviations on or off, and add your own custom terms whose casing overrides the built-in list. Existing Correct Words are migrated automatically; Ignored Words are retired (add the word in your preferred casing to the new list instead) - 2.2.0 - Translated into 15 languages (English, British English, German, Greek, Spanish, Filipino, French, Hindi, Hungarian, Italian, Polish, Portuguese, Slovenian, Turkish, Ukrainian); follows your browser's language automatically, with an override in Settings - 2.1.0 - Automatic proper noun casing in Title Case, Sentence case, and Capitalized Case (names, places, brands, acronyms); accented characters now transliterate properly when slugifying (café → cafe, straße → strasse); new Counts submenu showing live character, word, sentence, and line counts for the current selection - 2.0.0 - New developer conversions (camelCase, PascalCase, CONSTANT_CASE, param-case, snake_case, dot.case, path/case), new utility conversions (Capitalized Case, Alternating Case, Inverse Case, No Accents, No Case), ignored words and correct words settings, autosave - 1.6.0 - Support for Google Docs - 1.5.2 - Fixed conversions not working on existing tabs after first install - 1.5.1 - Added keyboard shortcuts link to context menu - 1.5.0 - Additional keyboard shortcuts and refreshed info/settings UI - 1.4.1 - Reliability updates - 1.4.0 - Bug fixes and optimisation - 1.3.0 - New icon - 1.2.1 - Disqus and Slate Editor fixes - 1.2.0 - Support for Disqus and more iframe-based content - 1.1.0 - Support for Reddit and WYSIWYG editors - 1.0.10 - Fixed automatic copy after conversion not working - 1.0.9 - Settings page for title case options and keyboard shortcuts - 1.0.8 - Reliability updates - 1.0.7 - Title Case conversion and Slugify option - 1.0.0 - Initial release