Proofly review

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Proofly is a free, open-source Chrome extension for proofreading text directly in browser fields. It checks spelling, grammar, punctuation, capitalization, preposition usage, and missing words across input fields, textareas, and contenteditable elements. The product is aimed at people who want configurable writing checks inside Chrome without a subscription or server-side processing. Its on-device approach uses Chrome’s Built-in AI APIs, with writing processed on the device rather than sent to Proofly servers.

Proofly’s strongest area is control over how checking works. Users can choose manual or automatic checking, configure correction types, and assign custom keyboard shortcuts. Inline correction suggestions keep fixes close to the text, while the issues sidebar provides a broader view of detected problems. These options make the extension suitable for writers who want more control than a single always-on correction mode provides, while still covering common proofreading categories in browser-based writing.

The main trade-off is scope. Proofly is focused on Chrome and does not provide a broader platform or integration footprint, so it is less suitable for people who need proofreading across multiple browsers, applications, or ecosystems. Chrome 141 or later is required, along with a device capable of running Chrome’s built-in AI models. The AI model also requires an initial download before offline use. Choose Proofly for free, private, configurable proofreading within Chrome; choose an alternative if cross-platform coverage or wider integrations matter more.

Proofly pros and cons

• Where it wins
  • Checks spelling, grammar, punctuation, capitalization, and missing words
  • Runs on-device with manual or automatic checking modes
  • Offers inline suggestions, an issues sidebar, and custom shortcuts
• Where it doesn't
  • Works only as a Chrome extension
  • Requires Chrome 141 or later
  • Needs a capable device and an initial AI model download

Proofly fact sheet, pricing and score →

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Last updated 7 Oct 2026 · How we research and update