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Tech riderRev. 12 Oct 2026

Proofly

Ch 557.1of 88Grammar checkers
  1. 1Runs onBrowser, Linux, Mac, Windows
  2. 2CostsFree plan
  3. 3Browser extensionYes
  4. 4Style suggestionsYes
4 lines stated Written from the maker's own pages: github.com
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The Proofly homepage

Overview

Proofly is ranked #55 of 88 in grammar checkers on Specifiction. It runs on Browser extension, Linux, macOS, Windows. There is a free plan.

Proofly plans and pricing

All plans
Free Free Free forever · no subscriptions github.com · 12 Oct 2026

Compared on grammar checkers

Free plan
Yesgithub.com
Browser extension
Yesgithub.com
Style suggestions
Yesgithub.com

Facts

Purpose
Proofly is a Chrome extension for writing assistance, proofreading, and grammar correction that processes text on-device.github.com · 12 Oct 2026
Corrections
It checks spelling, grammar, punctuation, capitalization, prepositions, and missing words.github.com · 12 Oct 2026
Languages
It supports the languages provided by Chrome’s built-in Gemini Nano model.github.com · 12 Oct 2026
Editing tools
It offers inline suggestions, auto-correct and manual modes, a sidebar, keyboard shortcuts, and undo/redo.github.com · 12 Oct 2026
Customization
Users can configure correction types, highlight colors, underline styles, and keyboard shortcuts.github.com · 12 Oct 2026
Integrations
It works with input fields, textareas, and contenteditable elements, and includes a right-click context menu and Chrome side panel.github.com · 12 Oct 2026
Privacy
The maker says Proofly does not collect or transmit user data and processes proofreading locally; the AI model must be downloaded initially.github.com · 12 Oct 2026
Security
The project describes minimal Chrome permissions, a strict content security policy, Shadow DOM isolation, and bundled assets.github.com · 12 Oct 2026
Offline use
Proofly works offline after the initial AI model download, which the privacy policy says is about 22 GB.github.com · 12 Oct 2026
Requirements
Proofly requires Chrome 141 or later and a device capable of running Chrome’s built-in AI models; the README lists Windows 10/11, macOS 13+, and Linux.github.com · 12 Oct 2026
Availability
The README describes Chrome Web Store installation as coming soon and gives instructions for manual installation from a GitHub release.github.com · 12 Oct 2026
Support
The maker directs users to GitHub Issues for bug reports and feature requests and GitHub Discussions for questions.github.com · 12 Oct 2026
Project status
The maker’s retrospective describes the project as alpha and says it had not yet been battle-tested extensively.github.com · 12 Oct 2026

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Where it ranks on Specifiction

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Sources