Highlight errors and common issues in your text!
Great writing isn’t just about good ideas — it’s about how clearly, accurately, and professionally those ideas are expressed. Even the best writers make mistakes, especially when writing fast. Typos, unclear sentences, repetitive phrases, punctuation slips, and style inconsistencies can easily slip through and hurt the final quality.
The Free Proofreading Highlighter from AlllinTools helps you catch errors early. It scans your text and highlights grammatical issues, readability concerns, repetitive words, and clarity problems so you can fix them one by one. Instead of guessing what's wrong, you can clearly see what needs improvement.
No installation.
No login.
Just paste → highlight → correct.
Simple, smart, and effective editing.
This tool visually marks issues that weaken writing:
→ You write.
→ The tool highlights.
→ You improve. ✔
Because first impressions count.
🎯 In professional writing
— errors damage credibility
— unclear language confuses clients
— messy errors reduce trust and conversion
📚 In educational writing
— grades suffer
— complex arguments become unclear
📱 In digital content
— readability drops
— engagement falls
— SEO ranking declines
A polished message leads to higher understanding and stronger impact.
Input:
This sentence have problems and it doesn’t look very well writed.
Highlighted Output:
“have” → subject-verb disagreement
“writed” → incorrect verb form
Sentence clarity → suggested rewrite
Better version:
This sentence has several issues and is not written very well.
📚 Students
✍️ Writers & Journalists
💼 Business Professionals
📣 Marketers & Copywriters
🌍 ESL/English Learners
📱 Social Media Creators
Clean writing → better engagement → stronger SEO.
A polished message builds:
✔ Trust
✔ Authority
✔ Confidence
✔ Professional identity
🔐 No uploads — 100% browser-side processing
Perfect for confidential content.
Writing is powerful — but only when it’s clear, correct, and confident. The Proofreading Highlighter by AlllinTools helps you find and fix errors within seconds, transforming your content into polished, professional communication.
✔ Fewer mistakes
✔ Stronger writing
✔ Better understanding
✔ Higher impact
Every word reflects who you are — so make each one count.
✨ Proofreading Highlighter – Only on AlllinTools.com