Online Proofreader

Duplichecker's online proofreader helps writers find and fix grammar, spelling, and punctuation errors in their content quickly and easily.


Words: 0

Characters: 0

4.7 / 5
5.10M+ reviews

Nothing to Check

Add or Upload Content to See Suggestions

Impressive Content Quality

All your writing is flawless


Deep Grammar Check

How Does Duplichecker’s Proofreading Tool Work?

Duplichecker’s proofreading tool uses AI-powered algorithms to spot and correct mistakes in a text and enhance its readability. Its easy-to-use interface makes it a perfect proofreading option for people involved in writing tasks.

The below steps define how this online proofreader works:

  1. Submit Text

  2. Paste text in the given box on this proofreading tool.

  3. Text Analysis

  4. The AI proofreader will scan the text to identify and highlight the grammatical or syntax mistakes.

  5. Correct Mistakes

  6. After identifying the mistakes, it provides you with suggestions to fix them.

  7. Fetch Flawless Text

  8. After correcting the mistakes, you can download the corrected text with a single click.

Make Your Writing More Fluent with Duplichecker’s AI Proofreader

Duplichecker’s AI proofreader makes your writing fluent with its advanced features. Our online tool utilizes smart techniques to catch writing mistakes in your content. Its super-fast algorithms take a couple of seconds to proofread a content of any length. Here are some highlights of our online proofreading tool:

Corrects Grammar Issues Instantly
Grammar, Spelling & Punctuation
100% Free, Unlimited Proofreading

Types of Mistakes Duplichecker’s Online Proofreader Can Detect

The online proofreader by Duplichecker can detect all kinds of writing mistakes. This online proofreading tool can help you fix the following errors.

Spelling Issues

While being fully involved in a writing task, any writer can make spelling mistakes. They may try to overcome these issues independently, but some errors might stay undetected. This online paper proofreader can help them quickly eliminate misspelled words to make the content error-free.

Grammatical Errors

If you are not a native writer of any language, it may look impossible to avoid grammatical errors in your text. But Duplichecker’s free proofreading tool is here to make things easier for you. You can use this tool to detect grammatical mistakes in your content and rectify them with its assistance in no time.

Wrong Punctuation Marks

Punctuation marks play a vital role in written communication, giving the reader an idea of how a text should be read and understood. Using wrong punctuation marks can confuse the readers, as they may never be able to comprehend your text precisely. You can get help from online English proofreading tools to avoid these mistakes. After you submit the text to this tool, it will highlight the wrong punctuation marks and detect instances where you have missed placing them.

Tone and Style Issues

As a writer, you need to follow a consistent tone and style to engage the readers. However, a little distraction can make you end up with inconsistency issues in your writing. You can overcome these mistakes with the help of Duplichecker's free online proofreading tool. This tool will let you know whether or not the sentences in your text are interconnected and easily readable.

Capitalization Errors

There are specific capitalization rules that writers need to know about. If you can’t fix your text's capitalization errors, you can leave this job to an online essay proofreader. The advanced algorithms of this tool will detect such mistakes and help you fix them in a matter of an instance.

Words Choice and Usage

Frequently, the words used in a text are correct in meaning, but their context doesn’t fit. Our proofreading online tool will help you detect such instances in your content and suggest the proper use of better words.

Who Should Use DupliChecker’s Online Proofreading Tool?

Duplichecker’s free proofreading tool is a must-have resource for people involved in writing tasks. The most common beneficiaries of this online free proofreader involve the following:



Educators are responsible for checking assignments turned in by their students. They won't be able to check and grade learners correctly since it requires much focus and precision. Hence, for this reason, they can get assistance from the essay proofreading tools. This will save ample time and allow them to accurately analyze the documents submitted by students.


Book Authors

The book authors need to be extra cautious while jotting down words for their books. If they fail to avoid spelling and grammar mistakes, it may lead them to face a lot of criticism. The avid readers are quite choosy when picking books for reading. You cannot capture their attention in reading your book if it involves several grammar or syntax errors. Therefore, they should use this paper proofreader online to make their extracts free of all writing mistakes.


Journalists & Editors

Journalists and editors are involved in creating and publishing news articles. They must be careful while writing down any information, as news articles should be 100% authentic and accurate. So, flaws in their work can ruin their worth in the eyes of the audience. In addition, the reliability of news articles will also fall. Hence, they can get assistance from an online English proofreading tool to overcome those mistakes. Besides correcting mistakes, this tool will also help them correct sentence structure flaws to enhance the content readability effectively.



The freelancing world has grown exponentially over the past few years. Every day, more and more individuals enter this spectrum to cash out their skills by offering services to businesses. However, you cannot secure good contracts if you lack written communication. To reach out to clients, you must write proposals explaining how you can benefit their companies. Clients won't even want to contact you if your proposals contain childish writing mistakes. The best way to increase your chances of getting noticed in the competitive freelance world is to use proofreading online tools to make your proposals flawless.


Business Professionals

Business professionals often need to write content for emails, presentations, and reports. When working on something that needs to be shared with different company stakeholders, making silly writing mistakes will haunt you badly. Hence, it’s best to use a tool like Duplichecker's free online proofreader to fix flaws in your text effectively. No matter what kind of text you have written, you can get it proofread and fixed with this web-based tool.

Frequently Asked Questions

You should use an online proofreader to make your textual content flawless. While proofreading textual content, you may easily miss out on minor grammar, spelling, and punctuation errors. These silly mistakes can hurt the worth of your work; hence, it’s recommended to utilize an English proofreading utility to make your content squeaky clean from all sorts of errors.

Yes! You can use Duplichecker’s online proofread tool for all kinds of writing tasks, including academic writing. It will polish your academic work, rectify grammatical mistakes, and help you secure an excellent academic grade.

Yes! The AI proofreader available on helps you enhance the fluency of your writing. This tool analyzes the context of your document and provides suggestions to fix the errors it contains accordingly.

No! Duplichecker's free proofreading tool doesn’t store your data. You can use this tool to proofread your documents without worrying about the confidentiality of their data.

As Seen On Bllue Blots eHOW Helum Kansas university OSU
Close Popup