Convert text between lower, UPPER, Capitalized, Title, Sentence, Alternating, and Inverse case from a popup or the right-click context menu. Live character and word statistics help you sanity-check long blocks before you copy the result.
TIP
Save your Title Case exception words once in settings; they apply to both the popup and context menu.
Getting started
- Install Convert Case and open the toolbar popup, or select text on any page.
- Paste or type text in the popup textarea.
- Click a case button (lower, UPPER, Capital, Title, Sentence, aLtErN).
- Copy the converted text, or use the context menu to replace a selection in place.
Popup workflow
The popup shows a stats bar (characters, characters without spaces, words, and whitespace count) above a large textarea. Seven conversion modes are available on the button grid:
| Button | Result |
|---|---|
| lower | all lowercase |
| UPPER | ALL UPPERCASE |
| Capital | First letter of each word capitalized |
| Title | Title Case with configurable small-word exceptions |
| Sentence | Sentence case across multiple sentences |
| aLtErN | Alternating character case |
Use Clear to reset the textarea and Copy to send the result to the clipboard. Expand Settings and Exceptions to edit Title Case skip words, reset to defaults, or save.
Context menu
Right-click selected text on a normal webpage and choose Convert Case. Sub-items include lowercase, UPPERCASE, Capitalized Case, Title Case, Sentence case, aLtErNaTiNg CaSe, and iNVERSE cASE (menu only; not on the popup grid).
The extension replaces the selection inside inputs, textareas, or contenteditable regions. If the first attempt fails on a dynamic editor, it retries after a short delay.
Title case exceptions
Title Case keeps common short words lowercase (a, an, the, and, of, via, etc.) unless they start a phrase. Customize the skip list in settings; values sync through chrome.storage.sync as titleExceptions so they follow you across signed-in Chrome profiles.
INFO
The first word of a selection is always capitalized in Title Case, even if it appears in your exception list.
Features
- Seven case modes: Lower, upper, capitalized, title, sentence, alternating, and inverse (via menu).
- Context menu: Convert selected text in place on any page.
- Title exceptions: Custom lowercase words in Title Case except at sentence start.
- Live statistics: Characters, words, and whitespace counts.
- Copy and clear: One-click clipboard copy with feedback.
- Synced settings: Title exceptions persist in
chrome.storage.sync.
Privacy
Title exception words sync via Chrome Sync. Converted text is processed locally; nothing is sent to Quintaphon servers.
See the Apps & Extensions Policy and Privacy Policy for company-wide details.
Need help?
Reload the page if context-menu conversion fails; some custom editors block insertion. Restricted pages (Chrome Web Store, chrome://, etc.) may not allow content scripts.
Contact us via the support page if you need more assistance.