15 Best Free Grammar Checkers 2026 | Expertly Reviewed & Tested

Whether you're writing a college essay, crafting a blog post, or drafting a professional email, grammar errors can undermine your credibility in seconds. The good news? You don't need to spend a dime to write flawlessly. We tested dozens of grammar checking tools and hand-picked the 15 absolute best free grammar checkers available right now in 2026 — evaluating each one on accuracy, real-time suggestions, interface quality, browser integration, and how much value their free tier actually delivers.

Before diving in, it's worth understanding the bigger picture: grammar checkers are increasingly powered by AI in 2026, making them far more capable than the old-school red-underline spellcheckers of the past. Tools like the ones listed here connect deeply with your writing workflow, catching not just typos but tone issues, passive voice, redundancy, clarity gaps, and even plagiarism. If you want your content to rank higher on Google, tools that improve readability and writing quality directly support your content marketing and SEO strategy.

Why Grammar Checkers Matter for SEO & Content in 2026

A grammar checker isn't just about avoiding embarrassing typos — it's a powerful layer of quality control that directly impacts how readers, clients, and search engines perceive your content.

Google's ranking algorithms in 2026 have grown more sophisticated than ever at evaluating content quality. While Google hasn't explicitly stated that grammar errors cause direct ranking penalties, poor readability directly correlates with higher bounce rates — and bounce rate is a key user-experience signal. When readers encounter grammatical chaos, they leave. And when they leave, rankings drop.

According to a Grammarly study on writing quality, professionals who make fewer grammar mistakes are promoted faster and earn higher salaries. For content marketers and bloggers, error-free writing translates directly to higher trust, longer dwell time, and ultimately better conversions. Pair a grammar checker with a solid understanding of on-page SEO techniques and you have a winning formula for content that truly performs in 2026.

Beyond SEO, grammar checkers also save enormous amounts of time during editing, reduce the need for expensive proofreaders, and help non-native English speakers communicate with confidence. With AI writing tools now integrated into almost every major platform, using a grammar checker has never been easier — or more important.

How We Tested & Reviewed Each Tool

Our 2026 testing methodology was rigorous and updated to reflect the latest tool versions. We ran each grammar checker through a standardized set of 12 writing samples spanning academic writing, casual blog content, business emails, technical documentation, and creative fiction. For each tool, we evaluated:

• Accuracy — How many genuine grammar, spelling, punctuation, and style errors did it catch? Did it produce false positives?
• Depth of Suggestions — Did it go beyond spell-checking to offer style, tone, clarity, and conciseness improvements?
• Browser & App Integration — Does it work seamlessly inside Google Docs, Microsoft Word, Gmail, or as a browser extension?
• Free Tier Generosity — How much value does the free version deliver before hitting a paywall?
• User Interface — Is it intuitive and non-intrusive, or cluttered and confusing?
• Speed — Does real-time checking lag, or does it keep up with your typing?
• AI Capabilities — Has the tool upgraded its AI engine in 2026 to offer smarter, more context-aware suggestions?

We also consulted real user reviews on platforms like G2 and Capterra to validate our hands-on findings.

The 15 Best Free Grammar Checkers Reviewed

1. Grammarly ⭐⭐⭐⭐⭐ — Editor's Pick 2026

Rating: 4.9/5 | Best For: All users — students, bloggers, professionals

Grammarly is the gold standard of grammar checkers in 2026 — and its latest AI update makes it more powerful than ever. The free version catches grammar, spelling, punctuation errors, and misused words in real time, while now offering enhanced tone detection and context rewriting even on the free tier. Its browser extension integrates seamlessly with Gmail, Google Docs, LinkedIn, Twitter, WordPress, and virtually every text field on the web.

In 2026, Grammarly introduced improved sentence-level AI that understands nuanced writing contexts far better than previous versions. The Grammarly editor is clean, distraction-free, and color-coded for clarity. Many professional SEO writers use it before publishing — learn more about how great writing ties into improving content readability for SEO.

✅ Pros:

• Most accurate error detection of any free tool in 2026
• Works on almost every website via browser extension
• Clean, intuitive, regularly updated interface
• Real-time suggestions with improved AI context in 2026
• Strong free tier with no word limits

❌ Cons:

• Advanced features (plagiarism check, full tone rewriter) require paid plan
• Can be overly aggressive with style suggestions
• No offline mode

2. QuillBot Grammar Checker ⭐⭐⭐⭐⭐ — Best for Paraphrasing

Rating: 4.8/5 | Best For: Students and academic writers

QuillBot's Grammar Checker is unique because it doesn't just fix errors — it integrates directly with QuillBot's AI paraphrasing engine, making it one of the best tools for writers who want to both correct and rephrase their text in one workflow. In 2026, QuillBot has upgraded its grammar detection model, making it noticeably more accurate on complex academic sentence structures.

The interface is minimalist and fast. QuillBot is especially popular with students and academic writers. It also offers a summarizer, citation generator, and translator — making it a complete AI writing suite in 2026. For a detailed breakdown, check out our full QuillBot Review & Complete Guide.

✅ Pros:

• Combines grammar check + paraphrasing in one workflow
• 2026 AI upgrade improves academic sentence accuracy
• Clear, plain-language explanations for every suggestion
• Free plan is very generous with no word limit

❌ Cons:

• Paste-and-check model (not fully real-time inline)
• Browser extension still less robust than Grammarly's

3. Hemingway Editor ⭐⭐⭐⭐½

Rating: 4.6/5 | Best For: Bloggers, content marketers, web writers

The Hemingway Editor takes a radically different approach to grammar checking. Instead of flagging typos, it focuses entirely on making your writing bold, clear, and direct. It color-codes your sentences by problem type:

In 2026, the browser version remains completely free with no account required. For bloggers and content marketers targeting readability-driven SEO, Hemingway is still an essential companion. Pair it with our guide on how to optimize your blog posts for SEO to truly maximize performance.

✅ Pros:

• Dramatically improves readability scores
• Free browser version, no signup needed
• Readability grade score included
• Excellent for content writers targeting web audiences

❌ Cons:

• Doesn't catch spelling or grammar errors per se
• No real-time browser extension for inline checking
• Desktop app requires one-time purchase

4. LanguageTool ⭐⭐⭐⭐⭐ — Best Multilingual Option

Rating: 4.7/5 | Best For: Non-English writers, multilingual teams, privacy-conscious users

LanguageTool is the most powerful open-source grammar checker in the world, supporting over 30 languages including English, German, Spanish, French, Portuguese, Polish, Dutch, and more. In 2026, LanguageTool has significantly upgraded its neural network model, delivering noticeably sharper detection of context-sensitive errors even in the free tier.

The browser extension integrates with Google Docs, Gmail, and most text fields. Its detection of homophones and commonly confused words is impressive on the free plan. If you're building a multilingual content strategy, also check out our guide on international SEO for beginners.

✅ Pros:

• Supports 30+ languages — best multilingual option in 2026
• Open-source and privacy-friendly (self-hosting available)
• Excellent browser extension with Google Docs support
• 2026 neural upgrade improves context-sensitive error detection

❌ Cons:

• Free plan limits text to 20,000 characters per check
• Fewer style suggestions than Grammarly for English writing

5. ProWritingAid ⭐⭐⭐⭐½ — Deepest Analysis

Rating: 4.5/5 | Best For: Authors, long-form content writers, academic researchers

ProWritingAid is one of the most comprehensive writing analysis tools available. The free tier allows you to check documents up to 500 words and get a surprisingly deep report covering over 20 different writing dimensions — grammar, style, overused words, sentence length variation, pacing, clichés, and more.

It integrates with Microsoft Word, Google Docs, Scrivener, and the browser. In 2026, ProWritingAid has added AI-powered rewrite suggestions to its free tier, making it an even stronger option for long-form writers. If you're also focused on improving keyword density without overstuffing, this level of writing analysis helps you write more naturally and rank better.

✅ Pros:

• 20+ detailed writing reports — most thorough analysis available
• 2026 update adds AI rewrite suggestions to free tier
• Integrates with Word, Scrivener, and Google Docs
• Contextual thesaurus and style guide included

❌ Cons:

• Free plan capped at 500 words per check
• Interface has a steeper learning curve than competitors

6. Ginger Software ⭐⭐⭐⭐

Rating: 4.3/5 | Best For: ESL writers, non-native English speakers

Ginger Software is a solid all-in-one writing tool that offers grammar and spell checking alongside a sentence rephraser, text-to-speech, and translation in 60+ languages. In 2026, Ginger has refreshed its UI and improved its mobile app, making it a top pick for writers on the go.

Ginger is particularly strong at correcting errors based on the full context of a sentence rather than just word-by-word analysis — making it far better at catching homophones and context-dependent errors. It's also a smart choice for non-native English speakers who need both correction and rephrasing support.

✅ Pros:

• Context-sensitive error correction — excellent for complex sentences
• Sentence rephraser included on free plan
• Translation in 60+ languages
• 2026 UI refresh improves mobile experience

❌ Cons:

• Free plan has daily usage limits
• Less accurate than Grammarly on nuanced English style

7. Reverso ⭐⭐⭐⭐

Rating: 4.4/5 | Best For: Language learners, multilingual content writers

Reverso is most famous as a translation tool, but its grammar checker is genuinely impressive — and completely free. It checks English, French, Spanish, German, Italian, and several other languages. What sets Reverso apart is its integration with real-world example sentences from authentic published texts, making it particularly educational for language learners.

In 2026, Reverso has expanded its contextual examples database significantly, offering richer usage context for corrections. The tool is browser-based with no account required.

✅ Pros:

• Free, no account required, no word limit
• Excellent multilingual support with real-world examples
• 2026 update expands contextual examples database
• Fast, lightweight, works on any device

❌ Cons:

• No real-time browser extension for inline checking
• Less detailed than Grammarly for English-only power users

8. Scribens ⭐⭐⭐⭐

Rating: 4.2/5 | Best For: Students learning grammar rules, English/French writers

Scribens is an underrated gem that checks grammar, spelling, and style for both English and French — completely free, with no character limit on the browser-based version. What makes Scribens stand out in 2026 is the quality of its explanations: when it flags an error, it explains the grammatical rule behind it, making it an educational tool as much as a correction tool.

It offers a browser extension (Chrome and Firefox) for real-time checking. A text statistics section gives you word count, sentence count, average word length, and reading level. Understanding the 10 most important SEO metrics will help you see exactly how content quality affects your visibility.

✅ Pros:

• No character limit on browser version
• Detailed grammatical rule explanations for every error
• English and French support
• Free browser extension for Chrome and Firefox

❌ Cons:

• UI feels dated compared to 2026 AI-native tools
• Limited to English and French only

9. Microsoft Editor ⭐⭐⭐⭐

Rating: 4.4/5 | Best For: Microsoft Office users, corporate professionals

Microsoft Editor has made significant strides in 2026, now powered by Microsoft's Copilot AI infrastructure. The free browser extension (Chrome and Edge) provides real-time grammar, spelling, punctuation, and basic style suggestions across the web — including Gmail, Google Docs, LinkedIn, and WordPress. If you're already in the Microsoft ecosystem (Word, Outlook), Editor is built right in with zero setup.

In 2026, the free tier of Microsoft Editor has been substantially improved, with Copilot-assisted clarity and conciseness suggestions now available without a Microsoft 365 subscription.

✅ Pros:

• Free and natively integrated with Word & Outlook
• 2026 Copilot AI upgrade improves free tier suggestions
• Supports 20+ languages
• No separate account needed — uses existing Microsoft account

❌ Cons:

• Full Copilot AI writing features still require Microsoft 365
• Can be less precise than Grammarly on nuanced English errors

10. Writer.com Grammar Checker ⭐⭐⭐⭐

Rating: 4.3/5 | Best For: Marketing teams, brand content writers

Writer's Grammar Checker is a free browser-based tool built with business content in mind. In 2026, Writer has expanded its free grammar checker with improved AI that's particularly sharp at catching passive voice, wordiness, tonal inconsistencies, and corporate jargon.

Paste in your text and get instant, clear corrections with professional, business-focused suggestions. Writer's philosophy aligns perfectly with essential content optimization practices — making it ideal for agencies and brand teams.

✅ Pros:

• Professional, business-focused AI suggestions
• 2026 update sharpens jargon and tone detection
• Clean, fast, no-account-required interface
• Catches clarity and conciseness issues very well

❌ Cons:

• Free tool is basic compared to their paid enterprise platform
• No real-time browser extension on free tier

11. Slick Write ⭐⭐⭐⭐

Rating: 4.1/5 | Best For: Data-driven writers, long-form content creators

Slick Write is a completely free, no-account-required writing analysis tool that goes far beyond basic grammar checking. It analyzes your writing for grammar and style issues while also providing detailed statistical breakdowns — word use frequency, sentence variety, transition usage, prepositional phrase frequency, and much more.

The real-time browser version is fully functional and doesn't impose any word limits — making it particularly valuable for long-form content writers. In 2026, Slick Write remains one of the only completely free tools with zero restrictions and zero upsells.

✅ Pros:

• 100% free, no account, no word limits, no upsells
• Rich statistical writing analysis
• Works great for long-form content of any length
• Highly customizable analysis settings

❌ Cons:

• Cluttered, overwhelming interface compared to modern tools
• UI has not been updated significantly in recent years

12. PaperRater ⭐⭐⭐⭐

Rating: 4.0/5 | Best For: Students, academic writers, essay submitters

PaperRater is designed specifically for academic writing. It combines grammar checking with plagiarism detection and an automated grading feature that evaluates your essay on a letter-grade scale. The free plan allows you to check documents up to 3,000 words with both grammar and a plagiarism report in one pass.

In 2026, PaperRater has improved its plagiarism database coverage, making its free plagiarism detection more comprehensive than in previous years.

✅ Pros:

• Free plagiarism detection included — improved in 2026
• Automated essay grading with letter-grade feedback
• Designed specifically for academic writing standards
• Up to 3,000 words on free plan

❌ Cons:

• Not suitable for business or casual writing
• Plagiarism check still less thorough than dedicated paid tools

13. Sapling ⭐⭐⭐⭐

Rating: 4.3/5 | Best For: Customer support teams, business communication writers

Sapling is an AI writing assistant that started out serving customer support teams and has expanded into a full-featured grammar checker for anyone. In 2026, Sapling's AI model has been upgraded to catch a wider range of errors, particularly excelling at comma placement, run-on sentences, and formal business register.

The free browser-based grammar checker is clean, fast, and accurate. Combining Sapling with the insights from our Grammarly Review gives you a dual-layer quality check for all customer-facing communication.

✅ Pros:

• 2026 AI upgrade improves business writing accuracy
• Fast, clean, free browser-based interface
• Great for customer support and client-facing content
• Context-aware suggestions feel natural and professional

❌ Cons:

• Advanced team features and autocomplete library are paid-only
• Smaller user community than Grammarly or LanguageTool

14. GrammarCheck.me ⭐⭐⭐½

Rating: 3.9/5 | Best For: Occasional users, quick one-off checks

GrammarCheck.me is the most frictionless grammar checker on this list. No account, no extension, no limits — just paste your text and click the button. It runs on LanguageTool's engine under the hood, which means its detection accuracy is solid and kept up-to-date with LanguageTool's 2026 AI improvements.

For writers who want a tool they can share with non-technical collaborators or use on any device without installation, GrammarCheck.me remains the go-to option in 2026 for zero-friction checking.

✅ Pros:

• Zero friction — no account, no install, no word limits
• Benefits from LanguageTool's 2026 AI upgrades
• Works on any device with a browser
• Perfect for sharing with non-technical users

❌ Cons:

• Basic feature set only — no style analysis, no reports
• No real-time checking or browser extension

15. DeepL Write ⭐⭐⭐⭐½ — AI-Powered 2026

Rating: 4.5/5 | Best For: Writers who want AI-quality rewrites, expanding language support

DeepL Write has been one of the fastest-growing grammar tools of the past two years, and its 2026 version is genuinely impressive. In 2026, DeepL Write has expanded its language support beyond English and German to include French, Spanish, Italian, Portuguese, and Dutch — making it a much more versatile option than before.

What sets DeepL Write apart is the naturalness of its output. Unlike some grammar checkers that produce stilted corrections, DeepL's 2026 AI suggestions read like something a skilled human editor would write — fluid, professional, and context-sensitive. For a full breakdown, check out our comprehensive DeepL Review & Step-by-Step Guide.

✅ Pros:

• Exceptionally natural AI grammar and style suggestions
• 2026 expansion adds French, Spanish, Italian, Portuguese, Dutch
• Full sentence rewrites alongside grammar correction
• Fast, clean interface with generous free tier

❌ Cons:

• No real-time browser extension for inline checking yet
• Some advanced rewrite features still behind paywall

Side-by-Side Comparison Table

How to Choose the Right Grammar Checker

Not all grammar checkers are created equal — and the "best" one depends entirely on how and where you write. Here's a quick decision framework for 2026:

For students & academic writers: Go with QuillBot (best overall for academic work), PaperRater (if you need plagiarism detection and grading), or ProWritingAid (for deep analysis of long papers).

For bloggers & content marketers: Use Grammarly for real-time error catching and Hemingway Editor for readability optimization. Running both gives you complete coverage and the best possible on-page content quality.

For multilingual writers: LanguageTool is unbeatable for non-English content in 2026. DeepL Write is now a strong second with 6 supported languages.

For Microsoft Office users: Microsoft Editor is natively integrated, Copilot-powered, and completely free — no extra installation needed.

For business & professional communication: Grammarly or Writer are the top choices for maintaining a professional, consistent, on-brand tone.

For non-native English speakers: Ginger Software or Reverso — both offer multilingual support and sentence rephrasing to help bridge language gaps.

For fiction & creative writing: ProWritingAid leads the pack in 2026, with reports specifically designed for narrative pacing, dialogue, and genre-specific style benchmarks.

💡 Pro Tip for 2026: The most effective strategy is layering tools. Write with Grammarly active for real-time correction → paste into Hemingway Editor to optimize readability → run through LanguageTool for a multilingual final check. All three are free, and together they cover virtually every grammar and readability need. For even more quality control, learn how to do a full SEO audit of your website to ensure content quality is just one part of your overall optimization strategy.

Grammar, Readability & SEO: The Hidden Connection

There's a common misconception that SEO is purely technical — keywords, backlinks, metadata, and page speed. But content quality, of which grammar and readability are critical components, plays an enormous role in how well your pages rank and how long visitors stay on them in 2026.

Here's the direct chain of impact:

Better grammar → Better readability → Lower bounce rate → Higher dwell time → Stronger ranking signals → Better rankings

Google's Helpful Content System in 2026 specifically evaluates whether content demonstrates expertise, authoritativeness, and trustworthiness (E-E-A-T). Poorly written, error-laden content signals low quality and low effort — exactly what Google's algorithms are designed to filter out. With AI-generated content flooding the web, well-crafted, human-quality writing stands out more than ever.

Readability also directly affects conversion rates. According to research from the Nielsen Norman Group, concise, scannable web copy significantly outperforms complex, dense writing for user engagement. When you write clearly — using active voice, short sentences, and precise word choices — you don't just please readers; you please search engines too.

For content creators looking to level up their entire SEO game in 2026, a grammar checker is just the beginning. Pair it with a solid understanding of:

• How to write SEO-friendly meta descriptions
• Proper heading tag structure (H1–H6)
• URL structure best practices for SEO
• How to track SEO performance with analytics
• On-Page SEO Checklist: The Complete Guide

🏆 Our Final Verdict for 2026

After extensive testing of the latest 2026 versions, Grammarly remains the single best free grammar checker for most users — it's accurate, versatile, and integrates everywhere. But "best" is always context-dependent:

The smartest 2026 approach? Use Grammarly as your daily driver, Hemingway Editor before publishing, and LanguageTool if you write in multiple languages. All three are free, and together they cover virtually every grammar and readability need a writer could have.

Remember: in 2026, great writing is not just about avoiding mistakes — it's about communicating clearly, building E-E-A-T trust signals, and creating content that both readers and search engines love.

📌 Related Resources from BrightSEOTools

• What Is On-Page SEO? The Complete Beginner's Guide
• How to Optimize Your Blog Posts for SEO
• Best AI Tools: Complete Guide with Pros & Cons
• SEO for Beginners: The Ultimate Step-by-Step Guide
• Check Your Website's Free SEO Score
• How AI Is Changing SEO in 2026
• Best Free AI Tools to Use Daily

10 Frequently Asked Questions 

What is the best completely free grammar checker with no word limits in 2026? 

In 2026, the best unlimited free grammar checkers are Grammarly (free tier, no word limit on real-time checking), Hemingway Editor (browser version, unlimited), and Slick Write (fully free, no limits). GrammarCheck.me and Scribens also offer unlimited checking in their browser-based versions. With AI advancements in 2026, Grammarly and DeepL Write have significantly improved their free-tier accuracy, making them stronger than ever for everyday writing needs.

Is Grammarly still free and worth using in 2026? 

Yes, Grammarly remains free and is still one of the most powerful grammar checkers in 2026. The free plan catches grammar, spelling, punctuation, and basic style issues in real time. In 2026, Grammarly has further enhanced its AI engine with improved tone detection and context-aware suggestions even on the free tier. The paid plan unlocks advanced features like plagiarism detection and full sentence rewrites — but the free version handles 80%+ of most writers' everyday needs.

Can I use a free grammar checker inside Google Docs in 2026? 

Absolutely. In 2026, several tools offer seamless Google Docs integration. Grammarly, LanguageTool, Microsoft Editor, and ProWritingAid all provide browser extensions or native add-ons that work directly inside Google Docs. Grammarly's Chrome extension overlays real-time suggestions in your document, while LanguageTool offers a dedicated Google Docs add-on from the Google Workspace Marketplace. Microsoft Editor has also improved its Google Docs compatibility significantly in 2026.

Do grammar checkers help with SEO rankings in 2026? 

Yes, and the connection is stronger than ever in 2026. With Google's continued refinement of its Helpful Content System and E-E-A-T signals, well-written, error-free content is a stronger ranking factor than it was in previous years. Grammar checkers improve writing quality, which directly reduces bounce rates, increases dwell time, and strengthens user experience signals — all of which feed into Google's 2026 ranking algorithms. Tools like Hemingway Editor also improve readability scores, which correlate strongly with higher engagement and better rankings.

Which grammar checker is best for non-native English speakers in 2026? 

In 2026, the top grammar checkers for non-native English speakers are LanguageTool (supports 30+ languages with AI-powered context-aware correction), Ginger Software (offers rephrasing and translation in 60+ languages), and DeepL Write (now expanded to support French, Spanish, Italian, Portuguese, and Dutch alongside English and German in 2026). Reverso also remains a strong option, combining grammar checking with real-world usage examples that help learners understand why corrections are made. All offer generous free tiers.

Are free grammar checkers accurate enough for professional use in 2026? 

In 2026, free grammar checkers are more accurate than ever thanks to advances in large language model (LLM) technology. For most professional writing — emails, reports, blog posts, and social media — free tools like Grammarly, Microsoft Editor, and LanguageTool are absolutely accurate enough. However, for highly specialized content such as legal documents, medical writing, or technical academic papers, combining a free AI grammar checker with human proofreading is still recommended, as even the most advanced AI tools can miss domain-specific nuances.

What is the difference between a grammar checker and an AI writing assistant in 2026? 

In 2026, the line between grammar checkers and AI writing assistants has blurred significantly. Traditional grammar checkers focused on fixing errors in existing text. Modern AI writing assistants — including the 2026 versions of Grammarly, QuillBot, and DeepL Write — now offer full sentence rewrites, tone transformation, content generation, style matching, and plagiarism detection alongside grammar correction. The key difference is that a grammar checker reacts to what you write, while an AI writing assistant actively co-writes and reshapes your content.

Can I use multiple grammar checkers together for better results in 2026? 

Yes, and combining tools is a widely recommended strategy among professional content creators in 2026. A popular workflow is: (1) Write with Grammarly active for real-time error correction, (2) paste the finished draft into Hemingway Editor to optimize readability and cut complexity, and (3) run a final pass through LanguageTool for multilingual or context-sensitive checks. Since all three offer robust free tiers in 2026, this three-layer approach delivers comprehensive coverage at zero cost — covering grammar accuracy, readability, and contextual correctness.

Do AI grammar checkers work well for creative writing in 2026? 

In 2026, AI grammar checkers have become significantly better at distinguishing intentional stylistic choices from genuine errors in creative writing. ProWritingAid leads the pack for fiction and creative writing, offering genre-specific reports on pacing, dialogue, repeated phrases, and narrative flow. Grammarly's 2026 update introduced a creative writing mode that reduces false positives on literary devices like sentence fragments and unconventional punctuation. Most tools now allow users to set their writing style (academic, business, creative) to calibrate suggestion aggressiveness accordingly.

Is it safe to paste sensitive content into free grammar checkers in 2026? 

This is an important consideration in 2026. Most cloud-based grammar checkers process your text on their servers, which means sensitive content such as contracts, personal data, or confidential business information is transmitted over the internet. For sensitive documents, consider using LanguageTool with their self-hosted or privacy-mode option, or Microsoft Editor within your own Microsoft 365 environment where data governance policies apply. In 2026, Grammarly and LanguageTool both updated their privacy policies to offer clearer data handling disclosures — always review these before pasting confidential content.