Pencilo — AI Writing Assistant | Grammar, Rewrite & Translate

Fix grammar, rewrite in 11 tones, summarize, and translate to 20+ languages — all inline, right where you write.

Pencilo — Your AI Writing Assistant for Every Tab Write better, everywhere. Pencilo fixes grammar, rewrites text, summarizes content, and translates — all inline, without leaving the page. Fix Grammar Select any text, right-click, and get instant grammar and spelling corrections applied directly in place. No copy-pasting needed. Rewrite in 11 Tones Rephrase your text to match the right voice: Neutral · Friendly · Professional · Concise · Funny · Polite · Empathetic · Persuasive · Confident · Assertive · Direct Summarize Condense long text into clear, concise summaries in one click. Translate to 20+ Languages Translate selected text into English, Spanish, French, German, Italian, Portuguese, Chinese, Japanese, Korean, Russian, Arabic, Hindi, Turkish, Dutch, Swedish, Polish, Greek, Czech, Hungarian, Serbian, and more. Works Right Where You Write Pencilo detects editable fields — Gmail, LinkedIn, Notion, Google Docs, Slack, and thousands more — and replaces text inline. No switching tabs, no popups to manage. Right-Click Context Menu Select text anywhere on the web, right-click, and access all features directly from the context menu. Undo & Redo Changed your mind? Instantly undo or redo any edit inside the Pencilo popup. Free to Start, Pro to Unlock Privacy-First Pencilo processes your text securely via API. Your data is never stored or used for training.