How to check an essay's grammar for free without uploading it
Quick answer
Paste the essay into the DO101 Grammar Checker. Spelling slips, punctuation errors, subject–verb disagreements, confusable words, wordy phrases and passive voice are underlined in place, each with an explanation, and the clear-cut mistakes fix in one click. There is no word limit and no account, and the checking runs in your browser, so your work is not uploaded.
Open the Grammar & Spelling Checker — freeStep by step
- 1Open the Grammar Checker and paste your text.
- 2Work through the underlined issues. Each one explains what is wrong.
- 3Apply one-click fixes to the unambiguous errors, and decide the rest yourself.
- 4Use the filter chips to hide categories — passive voice, say — that do not apply to your writing.
Why it matters that the essay stays on your device
Unpublished coursework, a thesis chapter or a job application is work you would rather not hand to a third-party server. Many checkers upload what you paste and keep it. This one is a rule engine that ships with the page, so there is nothing to send — you can confirm that in your browser's Network tab.
What it catches, and what it does not
It finds mistakes that follow recognisable patterns: misspellings, a/an errors, their/there and its/it's, double negatives, comma splices, doubled words and wordy phrases like "in order to". It is rule-based, so it catches less than tools built on trained language models, and it will occasionally flag something that is correct.
No checker can tell whether your argument holds or whether you have used a real word in the wrong sense. Read your work aloud once as well.
After the grammar check
The Readability Checker tells you whether sentences run long for your audience, the Word Counter keeps you inside the limit, and the Citation Generator formats your references.
Frequently asked questions
Is there a word limit?
No. Paste a whole dissertation chapter if you like.
Can I switch off checks I do not need?
Yes. Every flag can be ignored, and whole categories — passive voice, hedging, long sentences — can be hidden with the filter chips.
Is it as good as Grammarly?
It catches less, honestly. What it offers instead is unlimited free checking, an explanation for every flag, and text that never leaves your device.
The tool for the job
Catch spelling, grammar, punctuation and wordiness as you type.