Grammar checker
Grammar checking tips
- •Enter complete sentences or paragraphs for more accurate grammar analysis.
- •Review the suggested corrections before applying them to your content.
- •Use clear and concise language to improve readability and understanding.
- •Always review the corrected text to ensure it matches your intended meaning.
The basics
What is a grammar checker?
Why a grammar checker matters
Here's the thing most people get backwards about grammar mistakes: they rarely come from not knowing the rule. They come from writing faster than you can proofread, or from editing a sentence halfway through and leaving a fragment of the old version behind. You wrote "the team were reviewing" and then changed "team" to "manager" without updating "were" to "was." You knew the rule. Your fingers just didn't catch up with your revision.
What a grammar checker does
A grammar checker reads your writing and flags the places where it breaks the conventions of standard English, like subject-verb disagreement, misplaced modifiers, comma splices, wrong verb tense, the usual suspects. It doesn't just spell-check; instead, it looks at how your sentences are built and whether they hold together.
What Rext AI provides
For non-native English writers specifically, a grammar checker fills a different gap. Certain error patterns, like article usage or preposition choice, are genuinely difficult to internalize from grammar rules alone because English is inconsistent about them. Rext AI's grammar checker lists each issue with a correction and gives you a corrected version.
How it works
How to use the grammar checker
- 1
Paste in complete thoughts, not fragments
The checker needs sentence structure to evaluate sentence structure; a string of keywords or bullet fragments won't trigger much useful analysis. Full paragraphs work best.
- 2
Read every flagged issue before accepting anything
Grammar tools occasionally misread intentional style choices, like a sentence fragment used for emphasis, as errors. A quick read-through takes seconds and prevents you from losing a deliberate choice.
- 3
Note the issue type, not just the fix
Read the issue type and the suggested correction for each flag, so you learn the pattern, not just fix this one instance. If you keep seeing the same flag across different pieces, that's worth remembering for next time.
- 4
Check that corrections haven't changed your meaning
Grammatically correct isn't always what you meant; read the corrected version with your original intent in mind.
- 5
Do a final read-aloud pass yourself
Even after every flag is resolved, read the corrected text aloud. Grammar checkers catch structural errors; they don't catch clunky rhythm, which your ear picks up far better than any tool.
Features
Key features and capabilities
Issue type and correction
Each flag tells you the issue type, original text, and suggested correction without burying you in grammatical terminology.
Punctuation and style coverage
Beyond core grammar, it catches comma misuse, run-ons, redundant phrasing, and awkward constructions.
Issue count
The total number of issues, shown with the corrected text, so you can judge the state of a draft before diving into the detail.
No word limit that blocks you
Full articles process in one pass, no need to check a paragraph at a time.
Free and unauthenticated
No account and no card needed.
FAQ
Is the grammar checker free?
Yes, Rext AI's grammar checker is free to use, and no account is required.
Does it check spelling too?
Yes, spelling errors are caught alongside grammar and punctuation issues in the same pass and listed under Grammar issues.
Will it flag intentional style choices, like sentence fragments for emphasis?
Occasionally, since a tool can't always tell deliberate style from a genuine mistake. That's why every suggestion needs your review rather than automatic acceptance.
What's the longest text I can check at once?
Full-length articles are fine, but extremely long documents, well beyond a typical blog post, may take slightly longer to process but won't be rejected.
Start with one keyword.
Run it on your own site. Read the sources. Decide with the article in front of you, not a promise.
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