PI Humanize & Fix Grammar

Humanize text with PI Labs Premium, or fix grammar free with on-device AI. Works directly in text fields.

Humanize your writing and fix grammar directly in the text field. No switching tabs or pasting your draft into another app. PI Humanize & Fix Grammar gives you two actions: free grammar correction with Chrome's on-device AI, and natural writing edits with PI Labs Premium. ✍️ FIX GRAMMAR FOR FREE Correct grammar, spelling, punctuation and capitalization while keeping your meaning, language and tone. On-device grammar correction needs no account or subscription. • Tap the grammar button at the field's corner. • Press Alt+G. • Select text, right-click and choose "PI Humanize & Fix Grammar". Highlight part of a field to fix only that selection. With nothing highlighted, the button and Alt+G fix the whole field. ✨ HUMANIZE WITH PI LABS PREMIUM Make stiff or robotic writing sound more natural. Humanize simplifies jargon, trims filler and improves sentence flow while preserving your meaning and factual claims. It also removes semicolons and em dashes from prose, while preserving literal code, links and file paths. • Tap the smaller Humanize circle above the grammar button. • Or press Alt+H. • Highlight text to humanize just that part, or leave nothing selected to humanize the whole field. Humanize requires an active PI Labs Premium plan and Google sign-in through the extension. Open settings, choose Continue with Google and connect the account that holds your plan. Premium is checked online before each Humanize request, whichever AI engine you select. 🔒 CHOOSE WHERE YOUR TEXT IS PROCESSED On-device grammar correction processes your text on your computer and works offline after the model is downloaded. Select the built-in engine explicitly if you want grammar correction to stay on-device. You can also connect a local AI server or your own cloud API key in settings. PI Labs Premium includes access to the PI Labs cloud engine without a separate provider key. Cloud requests send the text you choose to process to the selected provider, whose terms apply. Automatic mode can fall back between configured engines. For Premium members, it normally tries PI Labs first. A measured or previously successful engine can take priority. The popup and settings show which grammar engine is active. ⚡ COMPARE YOUR ENGINES Measure engines sends a fixed test sentence through the engines you have set up. Compare response times and returned corrections, then let Automatic try the fastest successful engine first. You can also select an engine yourself. 🌐 WRITE WHERE YOU ALREADY WORK Use it in emails, social posts, support tickets, review comments, chat apps and forms. It supports standard text inputs, textareas and many rich-text editors, including fields inside embedded frames. Password fields are ignored. Some sites, editors and browser-protected pages may restrict access or replacement. ↩️ KEEP CONTROL OF YOUR EDITS Replacements use the browser's editing pipeline where supported, so Ctrl+Z can restore your original text. If you change a field while a request is running, the extension leaves your newer edits alone. 📋 SELECT TEXT YOU CAN'T EDIT Select text on a page and use the grammar context menu or a shortcut. If the text isn't editable, the result is copied to your clipboard when clipboard access is available. Alt+H requires Premium here too. ⚙️ MAKE IT FIT YOUR WORKFLOW • Show or hide both floating buttons. • Adjust the delay after you stop typing. • Set the minimum text length before the buttons appear. • Disable the extension on individual sites. • Keep using shortcuts when the floating buttons are hidden. ℹ️ BEFORE YOU START On-device AI requires a compatible Chrome version, supported hardware and a one-time model download. Availability depends on your browser and device. Cloud engines require an internet connection and the relevant account or API key. Humanize always requires online verification of an active PI Labs Premium plan. Start writing, choose Grammar or Humanize, and apply the result in the same field.