QuillBot Paraphraser

QuillBot Paraphraser is the flagship tool of QuillBot's comprehensive AI writing suite and one of the most widely used writing tools on the internet, with over 35 million users and a 4.7-star Chrome extension rating from 5 million installs. At its core, QuillBot rephrases text while preserving original meaning, functioning like an intelligent sentence-level thesaurus that understands context. Users choose from 10+ paraphrasing modes: Standard, Fluency, Formal, Simple, Creative, Academic, Expand, Shorten, Humanize, and Custom, to reshape tone and structure for any purpose. A Synonym Slider controls the degree of vocabulary change from subtle refinements to sweeping rewrites. Clicking any word reveals AI-powered synonym suggestions for granular editing. QuillBot supports paraphrasing in 20+ languages, accepts everything from single sentences to full document uploads, and tracks structural changes with before-and-after comparison statistics. Beyond paraphrasing, QuillBot has grown into a complete writing platform: Grammar Checker for error correction, Plagiarism Checker against billions of sources, AI Detector for identifying AI-generated content, Summarizer for condensing long texts, Citation Generator (APA, MLA, Chicago), Translator for 20+ languages, AI Chat, AI Image Generator, PDF Editor, Speech-to-Text, Text-to-Speech, AI Website Builder, and more. Whether you are a student rewriting an essay, a content writer refreshing blog posts, a professional polishing communications, or a non-native speaker improving fluency, QuillBot gives you complete control over how your writing sounds without changing what it means.