Check French spelling, grammar and punctuation free. Every issue underlined where it happens, with the reason attached.
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French grammar checker
French grammar checked with the reason attached
Paste French and every issue is underlined where it happens, labelled spelling, grammar, punctuation or style, with the reason attached. French is written in the Latin alphabet, and agreement of the participle, accents, spacing before ; : ! ? are what a checker has to get right in it. This one shows the rule each time, not just the change, so you can accept the fix, ignore it, or learn from it.
How to check French grammar
Three steps. The third is the one most checkers leave out.
1
Paste or upload the French
Type, paste or drop in a document. French is already selected as the language on this page; the menu above the editor also offers the variants described below. If the text turns out to be something else, the detector says so and you can change it.
2
Read the flags
Every flag is underlined in the text and listed beside it. Spelling and grammar flags are errors; punctuation and style flags are judgements, and the label tells you which is which before you decide.
3
Accept, ignore or read why
Click a flag to see the fix and the rule behind it, then accept it or ignore it. French has rules that speech does not reveal, and the reason is there so the same error is not made twice.
What the checker looks at in French
The parts of French grammar and spelling where a checker has to know the language, not just the words.
AgreementNouns have gender and articles and adjectives agree in gender and number, but the hard part is the past participle: it agrees with the subject after être (elle est partie) and with a preceding direct object after avoir (les lettres que j’ai écrites), and not otherwise. This one rule accounts for a large share of the errors in fluent French.
VerbsEndings that sound identical are spelled differently: -er, -é, -ez, -ais, -ait, -aient. Manger, mangé and mangez all sound the same, and the checker chooses by grammar (after a preposition the infinitive; after avoir the participle; after vous the -ez form).
Spelling and diacriticsé, è, ê, à, ù, ç and the tréma are part of the spelling: a and à, ou and où, du and dû are different words. Capital letters take accents too in careful writing (École, À bientôt), although older typography omitted them.
PunctuationIn France a thin space precedes ; : ! and ?, and guillemets « » enclose quotations with a space inside them; Canadian usage drops the space before ; ! and ?. Numbers use a comma for decimals and a space for thousands.
Capital lettersDays, months, languages and adjectives of nationality are lower case (le français, un écrivain français), while the noun for a person is capitalised (un Français).
Common mistakes in French writing
Five errors French readers notice at once, and what the checker does with each.
The -er / -é / -ez ending
Il faut manger (infinitive after a verb or preposition), il a mangé (participle after avoir), vous mangez (present with vous). They sound identical; the grammar decides.
Participle agreement after avoir
La lettre que j’ai écrite, les erreurs qu’il a faites: the participle agrees with a direct object that comes before it, and only then. J’ai écrit la lettre takes no agreement.
ce / se, ces / ses, c’est / s’est
Ce is a demonstrative, se a reflexive pronoun; ces means these, ses means his or her; c’est is it is, s’est is part of a reflexive past tense. Each pair is fixed by what follows it.
a and à, ou and où
A is the verb avoir; à is the preposition. Ou is or; où is where. The accent is the whole difference.
Missing ne in written negation
Spoken French drops ne (je sais pas), and it leaks into writing. In anything formal the two-part negation ne … pas, ne … jamais, ne … plus is required.
Formal and informal French
Tu and vous change the verb form and the possessive (ton dossier / votre dossier), and vous is expected in almost all written contact with strangers, customers and institutions. Switching mid-message is a real error, not a nuance.
The checker flags a mixed register as style rather than as an error, so the decision stays yours. If a whole text needs to move from one register to the other, the tone changer rewrites it in one pass.
Who checks French here
1
Students in France, Belgium, Switzerland and Canada, where marks are still lost for agreement and for missing accents.
2
Anyone writing to a French customer, agency or administration, where vous and the spacing before punctuation are noticed.
3
Learners who know the rules and want to see which ones they are actually breaking.
French grammar checker FAQs
Is the French grammar checker free?
Yes. Check French without an account, within the per-check and daily word allowances shown beside the editor. Signing in raises them, and Pro removes the guest limits and the ads. The pricing page lists what each plan includes.
Which French does it check?
The picker also offers French (Canada). Quebec French keeps some older forms and its own vocabulary, and the 1990 spelling rectifications (ognon, évènement, nénufar) are accepted in both France and Canada without being compulsory. French is preselected on this page; change the language menu above the editor if the text is a different variant.
Does it correct French spelling as well as grammar?
Yes, and in French the two overlap. Homophones are the French speller’s trap: ce/se, ces/ses/c’est/s’est, a/à, on/ont, son/sont, leur/leurs, tout/tous. Each pair is grammatically distinct, so the checker can tell them apart from the sentence rather than from a word list. Each of these is underlined where it happens, labelled spelling or grammar, with the standard form and the rule beside it.
Will it rewrite my French?
Not unless you ask it to. A check corrects what is wrong and leaves your sentences as you wrote them; every change is a separate flag you accept or ignore. The Improve and Rewrite passes, which do change wording, are separate buttons, and the paraphraser is a separate tool.
Can I check a whole French document?
Yes. Paste the text or drop in a .docx, .pdf or .txt file; the document is checked paragraph by paragraph and the corrected version can be copied or exported. Long documents are checked within the per-check allowance and continue as you scroll.
Is it useful if I am learning French?
That is where the reason attached to each flag earns its keep. Nouns have gender and articles and adjectives agree in gender and number, but the hard part is the past participle: it agrees with the subject after être (elle est partie) and with a preceding direct object after avoir (les lettres que j’ai écrites), and not otherwise. A learner sees which rule was broken, not just the corrected word, and can accept the fix or read why it was raised before deciding.
After the check
Translate the corrected French, change its tone, or shorten it. One plan covers every tool.
Each page opens the checker with that language already selected and explains what it looks for in it. The picker above the editor covers more than seventy languages in all.