データ月 2026-09

WritePro AI

ライティング

AIライティング

AI writing assistant for emails, blogs, SEO and social media with AI detector and grammar check.

Chromeに追加 ↗

AlphaMoatによると、2026-09時点でChrome拡張機能WritePro AIのユーザー数は247(前月比 +8.8%)、評価は4.9(12件のレビュー)で、9,324件のAIブラウザ拡張機能中2,952位、ライティングでは744件中243位です。

ユーザー数 · 2026-09

247+8.8%

評価

★ 4.912

総合順位(9,324件中)

#2,952

ライティング内の順位

#243/ 744

WritePro AIとは

Chromeウェブストアより

AI writing assistant for emails, blogs, SEO and social media with AI detector and grammar check. WritePro AI: 50+ AI Writing Tools, Free AI Detector & Grammar Check

The AI writing tool that stays open while you work. Get instant help with writing, rewriting, humanizing, summarizing, grammar, emails, SEO, blogs, social media, and more, without leaving your current tab.

No more copy-pasting text. No more switching tabs. WritePro stays right next to your browser, always available and always in context.

50+ AI Writing Tools, One Command Away

Type `/` in the input to browse every available tool. Each command is built for a specific writing task, not just a generic AI prompt.

✓ Writing & Editing

ストアの説明の続きを表示▾

/rewrite: Rewrite text without changing its meaning
/improve: Make your writing clearer, stronger, and more engaging
/humanize: Make AI-generated text sound natural and human
/simplify: Turn complex writing into easy-to-read content
/tone: Change the tone to formal, casual, professional, confident, or friendly
/grammar: Fix grammar, spelling, punctuation, and writing style
/bullets: Convert paragraphs into clean bullet points
/summarize: Summarize long articles, documents, or conversations

✓ Email & Outreach

/email: Generate complete emails from a short prompt
/reply: Write thoughtful replies to any email or message
/coldoutreach: Create personalized cold emails that get responses
/followup: Generate professional follow-up emails in seconds
/subject: Create high-converting email subject lines

✓ Social Media

/linkedin: Create professional LinkedIn posts
/instagram: Generate engaging captions with hashtags
/hooks: Write attention-grabbing hooks for any platform
/thread: Turn one idea into a complete X (Twitter) thread
/dm: Generate natural direct messages
/whatsapp: Write quick and conversational WhatsApp messages

✓ SEO & Content Marketing

/seo: Create SEO-friendly content with natural keyword placement
/headline: Generate high-CTR headlines and titles
/blog: Create blog outlines or complete blog posts
/productdesc: Write persuasive product descriptions

...and 30+ more AI tools for YouTube scripts, cover letters, ad copy, interview preparation, content creation, and much more.

Free AI Content Detector, Built In

Know whether your text reads as AI-written before you publish, submit, or send it.

Paste any text and WritePro gives you a clear 0–100% AI probability score, with the specific sentences that triggered the detection highlighted in red. No separate tool. No subscription. Built directly into the extension.

Sentence-level detection: See exactly which phrases look AI-generated
0–100% AI probability score: Get a clear score with a plain-English verdict
One-click Humanize: Rewrite flagged content without leaving WritePro

Free Grammar Checker, Fixes Errors, Keeps Your Voice

Most grammar tools rewrite your sentences. WritePro's grammar checker fixes only what's wrong.

Every correction is highlighted in green so you can instantly see what changed and why. No surprise rewrites. No style drift. No unwanted changes to your writing.

Fix grammar, spelling, and punctuation errors only
Every correction highlighted in green, nothing hidden
Preserve your tone and writing style exactly as you wrote it

Vision AI, Understands What's on Your Screen

Most AI writing tools only understand text. WritePro can also understand what's on your screen.

Capture a screenshot of an email, WhatsApp chat, LinkedIn conversation, document, website, or article, and Vision AI reads the context to generate accurate, relevant responses without copying and pasting.

Use it to:

Reply to long email conversations instantly
Respond to WhatsApp or LinkedIn messages with full context
Analyze competitor websites and landing pages
Summarize documents, PDFs, and articles on your screen

Works Everywhere You Write

A lightweight floating widget appears on supported websites, so WritePro is always just one click away.

The sidebar stays open while you browse, making it easy to write emails, improve social posts, generate content, or reply to messages without changing tabs.

Built for Privacy

Your conversations, prompts, and chat history are stored locally inside your browser.

No account required. No sign-up. No unnecessary data collection. Your writing stays private.

Free to Start

Free: 20 AI requests every day with access to all 50+ writing tools, AI Content Detector, and Grammar Checker.

Pro: Unlimited AI requests with a single lifetime purchase. No subscriptions. No monthly fees. No renewals.

Why Choose WritePro?

Persistent sidebar: Write without constantly reopening a popup
50+ AI writing tools: Purpose-built commands for every writing task
Built-in AI Content Detector: Check AI probability without leaving the extension
Built-in Grammar Checker: Fix errors while preserving your writing style
Vision AI: Generate replies using on-screen context from screenshots
Floating widget: Access WritePro on every supported website
Local chat history: Revisit previous conversations anytime
Privacy first: Your conversations stay in your browser

Get Started

Install WritePro, click the extension icon, and open the sidebar. That's it.

Start by trying `/rewrite` on your next email, `/blog` for your next article, `/linkedin` for your next post, or check your content with the built-in AI Content Detector and Grammar Checker. WritePro gives you everything you need to write faster, better, and with confidence.