Claude Prompt for Correcting a Text

Text correction is one of the most powerful uses of Claude. Whether you are a writer, student, professional, or content creator, spelling, grammar, and syntax errors can harm the credibility of your writing. Claude excels at identifying and correcting these errors thanks to its deep understanding of the French language, including complex agreements, irregular conjugations, and typographical subtleties. Unlike a simple auto-correct tool, Claude understands the context of each sentence, allowing it to detect errors that conventional tools miss: false friends, anglicisms, awkward repetitions, or register inconsistencies. By using a well-structured prompt, you get not only a corrected text but also explanations for each modification, helping you improve your language mastery. This approach turns correction into a continuous learning process tailored to your level and specific needs.

The prompt

Claude

You are a professional proofreader expert in French. Correct the following text by applying these rules:

Spelling: correct all spelling mistakes, including accents and French typography (non-breaking spaces before ; : ! ?)
Grammar: correct agreements (subject-verb, adjectives, past participles), conjugations, and syntax errors
Style: point out repetitions, heaviness, and awkwardness without rewriting the text — suggest alternatives in brackets
Punctuation: correct punctuation and capital letters

For each correction, use this format:

Complete corrected text first
Then a summary table with 3 columns: Original | Correction | Explanation

Do NOT change the meaning or tone of the text. Preserve the author's style.

Text to correct:
[PASTE_YOUR_TEXT_HERE]

Personalize this prompt with Léa

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Why it works

This prompt works because it assigns a precise expert role to Claude and breaks down the task into distinct categories (spelling, grammar, style, punctuation), which structures his analysis. The imposed output format with summary table forces Claude to justify each modification, increasing accuracy and reducing abusive corrections. The explicit instruction to preserve the tone and meaning prevents Claude from rewriting the text according to his own stylistic preferences.

Expected result

You will receive your text fully corrected, ready to use, followed by a table detailing each modification with its grammatical or spelling explanation. Stylistic suggestions will be clearly separated from mandatory corrections, leaving you the final choice on style.

Variants by level

FAQ

Can Claude correct long texts without losing quality?

Claude handles texts up to several thousand words very well. For very long documents (over 10,000 words), it is recommended to split the text into logical sections (chapters, parts) and submit them separately. This allows Claude to maintain consistent attention on each passage and avoid omissions at the end of the text. Specify the general context of the document at the beginning of each section to maintain coherence.

How can I prevent Claude from rewriting my text instead of just correcting it?

The key is to be explicit in your prompt. Use instructions like 'Do not change the meaning or tone' and 'Preserve the author's style.' Ask Claude to clearly separate mandatory corrections (spelling, grammar) from optional stylistic suggestions. If Claude rewrites too much, add: 'Stick to objective errors. Only suggest reformulations if the sentence is grammatically incorrect or ambiguous.'

Does Claude correct French typography (non-breaking spaces, guillemets)?

Yes, as long as you explicitly request it. Claude knows French typographic rules: non-breaking spaces before double punctuation marks (; : ! ?), French guillemets (« »), accented capitals (É, À, Ç), and em dashes for dialogue. Mention 'French typography' in your prompt to activate this check. Note that the rendering of non-breaking spaces then depends on your publishing tool.

How to use this prompt

Copy the prompt with the button above.
Paste it into ChatGPT, Claude or your favorite AI assistant.
Replace the bracketed variables with your details, then refine the result.

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