Private Text Case Converter

UPPER. lower. Title.

camelCase too. Probably.

Input
Output
Input: 0 chars · Output: 0 chars
No upload
Works offline
No tracking

Need case conversion offline? The offline bundle handles unlimited text with no limits. $49 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Drop your text into the editor. Works with any length.
02
Convert
Choose your case: UPPER, lower, Title, Sentence, aLtErNaTiNg, or camelCase. One click.
03
Copy
Converted text is ready to copy. Paste it wherever you need it.
// Why this is different

Your text stays on your device.

fwip converts text case entirely in your browser. No server, no upload, no tracking. Your text never leaves your machine.

fwip works differently. The processing engine runs entirely in your browser. Your text is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Use it free in your browser. Own it offline for $15. No subscription. Yours.
// How fwip compares

fwip vs the rest.

fwipConvertCase.netGrammarlyTextFixer
Upload requiredNoNoNoNo
Account requiredNoNoYesNo
Price$15 / toolFree (ad-supported)$30/mo ($360/yr)Free (ad-supported)
Files leave deviceNeverYesYesYes
Works offlineYesNoNoNo
Batch processingOffline bundleNoNoNo
// Questions

Frequently asked.

How do I change text to uppercase?▾
Paste your text into fwip and click UPPERCASE. All characters are converted instantly. Copy the result.
What case types are available?▾
UPPERCASE, lowercase, Title Case (capitalises each word), Sentence case (capitalises first letter of each sentence), camelCase, snake_case, and alternating case.
Is my text uploaded when I convert it?▾
No. The conversion happens entirely in your browser using JavaScript. Your text never leaves your device.
Can I convert text case on my phone?▾
Yes. fwip works on any device with a browser — phone, tablet, or desktop. No app needed.
What is Title Case?▾
Title Case capitalises the first letter of each word. It's used for headings, titles, and proper nouns. fwip handles common exceptions like 'and', 'the', 'of' when appropriate.
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