Proofly
Proofly: A free Chrome extension for configurable spelling, grammar, and punctuation checks. Ranked #60 of 88 in Grammar Checkers by our editors (3.0/10); pricing: Free plan; best for free Chrome proofreading with configurable checks.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forFree Chrome proofreading with configurable checks
- Free planYes
- Paid fromFree
- Facts checked21 Sep 2026
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
Our verdict on Proofly
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.
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Proofly pricing
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Proofly fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Browser extension | Yes |
| Desktop app | Not verified |
| Mobile app | Not verified |
| Style suggestions | Yes |
| Tone detection | Not verified |
| Languages supported | Not verified |
| Deployment | Browser extension |
| Platforms | Chrome extension |
| Compliance & security | GDPR |
| Support | Community |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | github.com |
| Facts checked | 21 Sep 2026 |
Alternatives to Proofly
- GrammarlyA broad writing assistant with strong grammar, tone, rewriting, and AI coverage.9.4
- LanguageToolA broad multilingual checker with open-source and self-hosting options.9.2
- Microsoft EditorA strong Microsoft 365 writing assistant with focused platform coverage.9.0
See all Proofly alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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