About CaseWren
CaseWren is a free collection of 147 online text tools: case converters, fancy fonts, text analysis, encoders, cleanup utilities, random generators, and image & document converters.
Private by design
Every tool runs locally in your browser. Your text, images, PDFs and Word documents are never uploaded to any server - the tools keep working even if you go offline after the page loads.
Fast and uncluttered
No sign-up, no pop-ups, no usage caps. Every tool works the moment the page opens, transforms as you type, and copies or downloads in one click.
Bilingual
The interface and every tool page are fully bilingual in English and Chinese - switch anytime from the header.
Always growing
Missing a tool? Suggest it - the most requested tools get built first.