Free AI Writing Tools Guide: Write, Correct, Rewrite and Summarise Text

AI writing tools are most useful for the writing nobody enjoys: the delicate email to a landlord, the fifth cover letter of the week, the report that needs a summary by this afternoon. Our AI writing tools handle seven of these jobs. You describe what you need or paste your draft, and the tool returns text you can review, edit and use^[1].

This guide explains what each tool does, how the tools differ from each other, and how to get results you can trust.

How these tools work

Unlike most of our tools, which run entirely in your browser, the AI writing tools send the text you enter to an AI model to generate a response. That means two things. First, do not paste passwords, bank details or anything you would not put in an email. Second, always read the result before you use it: AI can misunderstand a request or phrase something in a way you did not intend. You remain the author, and the tool is your assistant.

Write from scratch

AI Email Writer turns a short description into a complete email with a subject line, greeting, body and sign-off. Tell it the purpose, who you are writing to, the points to cover and the tone: professional, friendly, formal or persuasive. It suits follow-ups after meetings or interviews, requests to managers or offices, and customer support replies. List every fact the email must include, such as dates, amounts and names, because the AI cannot guess them. Saying who the reader is ("my manager", "a new client") helps it pick the right tone.

AI Cover Letter Generator writes a three-to-four paragraph letter that connects your experience to what the employer is asking for. Enter the job title and company, summarise your experience, and paste the job description if you have it. Adding the description makes a big difference, because the AI picks out the skills the employer emphasises and addresses them directly. Summarise two or three achievements with numbers in the experience field for a more specific letter.

Fix what you have already written

Email Corrector checks a draft for grammar, spelling, punctuation and awkward phrasing and returns a corrected version. It is not a rewrite: it keeps your structure, points and voice, and only fixes what is wrong. That makes it ideal before sending an important email, and for non-native English speakers who want confidence that a message is correct. Paste the whole email, including the greeting and sign-off, and compare the result with your original to learn from the corrections.

Grammar Improver does the same for any text, and goes a step further by improving clarity and flow. It rewrites clumsy sentences, fixes tense and agreement errors and removes repetition while keeping your meaning. Use it on essays, reports, blog posts and product descriptions. For long documents, work a few paragraphs at a time for more precise results.

Clarity is the goal of both tools. The U.S. government's plain language guide series is a good companion: it explains why short sentences, active voice and familiar words help readers understand you the first time^[3].

Change the tone or the wording

Email Rewriter keeps your message but changes its tone to professional, formal, friendly or concise. It turns an angry reply into a calm one, a long email into a short one, and a casual note into something suitable for HR or a bank. Choose "concise" for status updates and requests to senior people, and "friendly" for colleagues and existing contacts.

AI Paraphraser expresses the same idea in different words, in a standard, formal, casual, creative or simpler style. Use it to smooth your own drafts, simplify technical or legal text for a general audience, or write variations of product descriptions and social posts. Each run can produce different wording, so try a few times and pick the best version. "Simpler" is especially useful for customer-facing text.

Read less, understand more

Text Summarizer condenses articles, reports, papers and long emails into their key points. Choose short for the essentials, medium for a balanced overview, or detailed when supporting points matter. It focuses on the facts and conclusions in the text you provide and does not add outside information. Paste clean text without menus, adverts or comments, and use "detailed" for technical or legal material where nuance matters.

Which tool should you use?

• An email you have not started: AI Email Writer.
• An email you have written: Email Corrector to fix mistakes, Email Rewriter to change the tone.
• A job application: AI Cover Letter Generator.
• An essay, report or post: Grammar Improver.
• Saying something a different way: AI Paraphraser.
• A long text you need to understand quickly: Text Summarizer.

Using AI writing responsibly

Google's guidance on creating helpful, reliable content applies to anything you publish, however it was written: content should be accurate, original and written for people, not for search engines^[2]. AI is good at structure and wording; you supply the facts, the judgement and the final check. For school and university work, follow your institution's rules on AI assistance.

If you write a lot of email, the AI Email Writer is the place to start. Describe what you need in a sentence, and edit the draft it gives you rather than starting from a blank page.