Halo

A writing assistant for any web page. Rewrite, fix grammar, change tone, summarize, or generate, right where you type.

Halo is a writing assistant that works on any web page. Highlight text, or use the dot in a field's corner, then rewrite, fix grammar, change tone, summarize, shorten, lengthen, reformat, or generate something new from a prompt. The result drops right back into place. Write better wherever you already work: Gmail, Google Docs, LinkedIn, X, Notion, your CMS, support replies, and any text field on the web. What you can do: • Improve: tighten the writing and the flow • Fix grammar: clean up spelling, grammar, and punctuation • Change tone: professional, casual, confident, friendly, direct, or empathetic • Summarize, make it shorter, or make it longer • Reformat with clear structure • Generate from a prompt, then refine the result with a follow-up instruction • Reference a Project so Halo writes with your context and brand Sign in with Google, Apple, or email to use your Halo account across the extension, the Mac app, and iPhone. Free actions work right away. Generate and web research are part of Halo Pro. Halo is a writing partner, not a crutch. It helps you say what you mean, in your words. Get the Mac and iPhone apps at writewithhalo.com.