10 Best Proofreading Tools Online 2021 For Error-Free Writing

In this article, I will share some of the best proofreading tools of 2021 that you can use online whenever or wherever you write. Let’s begin.

You’d connect with me if I say writing is a painful job and requires a lot of hard work to produce unique and engaging content. Because, while writing, we never think about the silly grammatical and punctuation errors we make.

However, gone are those days when there’s no one to guide you on your grammatical errors. Today we have a handful of free and paid online proofreading tools to help us get the job done.

Best Proofreading Tools
Best Proofreading Tools

Nevertheless, there are thousands of tools on the web, and it’s an untidy job to check out all the tools which fit your style and business.

To solve this problem, we came up with a detailed article on the top 10 best proofreading tools which you can take into account to make your articles look perfect and professional.

So without wasting any further time, let’s dive right into the article and explore all the tools in detail.

Also, Read | Top 10 Best Plagiarism Checker Tools.

Here is the list of the top 10 online free best proofreading tools of 2021:

Here is the list of best online proofreading tools, which are an excellent fit for content marketers:

Sl. No.Best Proofreading ToolsWebsite
7Slick Writeslickwrite.com
9Spell Check Plusspellcheckplus.com

1. Grammarly – #1 Online Proofreading Tool

Grammarly Proofreading Tool

Started in 2008, Grammarly is one of the renowned and very well-known online best proofreading tools. With the help of Grammarly, you can be a writing tycoon.

There are hundreds of thousands of people already using the tool, and it is sure to help you become a good writer starting from today.

Official Website: Grammarly.com

Not only blog posts or essays, but Grammarly also helps you proofread everything you write on the web. The best part about this tool is, it’s free to use. All you need to do is install the free Grammarly extension in your Chrome or Mozilla browser and let Grammarly do the heavy lifting for you.

I have used several proofreading tools to make my article free from grammatical mistakes, but no other tools in the market are as accurate as Grammarly. I love the user interface and the error suggestion which Grammarly shows.

Although, sometimes, the suggestions indicated by the tool are lame, which can be ignored considering the other features it has to offer.

If you need advanced features like in-depth grammar and punctuation checks, plagiarism detectors, vocabulary enhancement suggestions, then you need to upgrade to Grammarly premium.

Check out our comprehensive, unbiased Grammarly review to get the complete information about the tool.

To create a Grammarly free trial account, you can click here.

Spoiler Alert: Grammarly has a mobile application for Android & iOS, which makes it easy for you to check grammar even on the go.


  • Intuitive user interface.
  • The tool checks over 250+ types of grammar errors.
  • Most accurate grammar suggestion software.
  • Real-time grammar checking all over the web.


  • At times the tool suggests you invalid errors which aren’t really errors.

You may also like to check these best punctuation checker tools.

2. Whitesmoke

The second in our list for the best online proofreading software is WhiteSmoke. The tool is ideal for someone who sucks at grammar.

WhiteSmoke is an all-around tool to make your blog post, essay, or academic paper look picture perfect without any grammatical mistakes.

Official Website: whitesmoke.com

WhiteSmoke doesn’t give you free access to the software; instead, you can try out the 4-day free trial and decide for yourself.

whitesmoke proofreading tool
Best Proofreading Tools

If I talk about the features, you get all the features like ready-made templates to create emails and resumes, web-based grammar and punctuation corrections, desktop and mobile application, translation, spell checker, style checker, and a plagiarism checker.

The tool is super cheap when compared to Grammarly and GingerSoftware. On top of that, if you lock in the 3-year WhiteSmoke license, you’ll be surprised by the pricing structure of the software.

The price you pay for the monthly subscription of the tool is lower than a McDonald’s happy meal. 😀

Spoiler Alert: WhiteSmoke has a mobile application for Android & iOS, which makes it easy for you to check grammar even on the go.


  • Affordable proofreading tool.
  • Support for the extension.
  • Highly accurate – gives fierce competition to Grammarly in suggesting the errors.


  • No free version of the software is available.
  • The plagiarism checker database is small compared to other plagiarism checker tools.

You may also like to check these most beautiful English words.

3. GingerSoftware

GingerSoftware is a fantastic and free online proofreading and grammar checker. The tool is almost identical to Grammarly and WhiteSmoke but has its unique offerings.

With GingerSoftware, you can translate text in over 40+ languages. Additionally, you also get access to the free dictionary, which shows you the detailed meanings of all the words you type into it.

Official Website: gingersoftware.com

The tool is free to use and has a browser extension which checks all the grammar and punctuation errors in real-time once you log in to your Ginger account.

gingersoftware, best proofreading tools
Best Proofreading Tools

The free version is enough for anyone who only writes casual emails or comments on social media. For anyone who is into blogging or freelance writing or someone who needs to submit an essay in school, they need the premium version of the software.

Features like text reader, sentence rephraser, and analyzing your errors are available in the premium plan of the tool.

The GingerSoftware isn’t that accurate in suggesting the errors. Also, in the free version of the tool, you get a minimal set of mistakes to solve, which is a bit disappointing.


  • You get a built-in plagiarism checker.
  • Support for a browser extension to check all the mistakes in real-time.
  • It offers a lot of features in the free version of the software.
  • The tool suggests you related words keeping the sentence context in mind.
  • Ideal for non-English speakers.


  • There’s no desktop app for Mac, unlike you get for Windows OS.
  • The grammar and punctuation checker is a bit inaccurate compared to other tools.
  • Error suggestions in the free version are minimal.
  • It is highly-priced.

You may also like to check these most common punctuation mistakes.

4. PaperRater

Paperrater is your online friend to make your copy, and anything you write on the web looks perfect and elegant. The tool is free to use and utilizes Artificial Intelligence to find out highly accurate errors in your article.

paperrater, proofreading tools
Best Proofreading Tools

Official Website: paperrater.com

If I talk about the features, the tools come with some of the basic features like grammar and punctuation checker, plagiarism checker, real-time error checking, and other advanced features like proper writing instructions, vocabulary builder, and automated scoring.

There’s a paid version of the software, which is made for professional writers, freelancers, or agency owners. With the paid version of the tool, you get some top of the class features like faster processing, file upload (Doc, Docx, TXT, RTF), ad-free, and enhanced plagiarism checker.

The tool also creates beautiful looking reports of your document, which you can directly submit to your clients or in your universities.

It is a super in-depth report which includes a lot of data.

Lastly, you get excellent writing suggestions which are as follows:

  1. Passive voice detection.
  2. Sentence length.
  3. Phrases to avoid.
  4. Correct vocabulary usage, and much much more.


  • Free to use the software.
  • Decent customer service.
  • Effective pricing structure.
  • It has an advanced plagiarism checker.


  • You cannot export the reports in PDF format.
  • [A major flaw] Translation is available only in English.
  • No mobile app support.

You may also like to check these most common grammar mistakes.

5. PolishMyWriting

PolishMyWriting is also known as After The Deadline is a free online proofreading tool that you can take into account to check all the basic grammatical and spelling mistakes in the article.

Official Website: polishmywriting.com

polishmywriting proofreading tool
Best Proofreading Tools

Automatic the team behind WordPress designs the tool. The software has a very straightforward to use UI. All you need to do is copy-paste the text in the box, and at the bottom, click on the “Check Writing” option.

If the tool finds any errors in the document, it will directly show you where you copied the article at first. PolishMyWriting is also available for download and offers various download options.

Like you can use the PolishMyWriting plugin on your WordPress blog, or you can download the Chrome and Mozilla Firefox version of the tool.


  • A dedicated WordPress plugin.
  • 100% Free to use.
  • It comes with grammar, spelling, and style suggestions.
  • A very straightforward user interface (UI).


  • A minimal set of features available.

You may also like to check this proofreading checklist.

6. SpellChecker

SpellChecker is a free online tool to proofread your documents and articles. The software checks for grammatical and spelling mistakes in over 24 languages.

Moreover, if you have a website where you have published some articles, SpellChecker will check the entire site for errors, which you can resolve later.

Official Website: spellchecker.net

spellchecker proofreading tool
Best Proofreading Tools

With over 100k spell-check entries in the SpellChecker.net database, they suggest you misused words, punctuation errors, and of course, spelling errors.

One beautiful feature about Spell Checker is, it also targets errors written by non-native English speakers, which makes this tool a goldmine for anyone whose primary language isn’t English.

Lastly, there’s an extensive dictionary feature that you can use if you struggle to come up with new words while writing your articles or essays.

If you search for a word, the tool shows you a lot of data to read and understand, which is excellent considering it to be completely free software.

Fun Fact: On the left side on the website, they show you “Word of the day” with this feature consciously or subconsciously, you can learn new words daily.


  • Completely free to use the software.
  • Every day you could learn a new word from the website.
  • Suggests some basic errors.
  • Checks grammar in over 24 languages.


  • No real-time grammar and spell checking.
  • Very limited error suggestions.

You may also like to check: How to write better?

7. Slick Write

Slick Write is an easy to use grammar checker software, which is free. On the homepage of the website, you can click on the “Start Writing” button, and it will take you the editor.

Once you are done writing, click on the green Continue button, and the software will start analyzing the article for errors.

Slick Write shows you some of the advanced grammar errors like excessive prepositional phrases, use of adverbs, double words, etc.

Official Website: slickwrite.com

slick write proofreading tool
Best Proofreading Tools

The suggestions given by the tool are decent; moreover, if you’ll double click on any errors, the tool will show you other additional information like the associated words, Wikipedia, dictionary, and urban dictionary, which relates to the inaccuracy.

I don’t know how it can be useful for anyone, but it sure is giving a lot to digest. I’d say Slick Write is a perfect tool for complete beginners who don’t have the budget to invest in paid proofreading tools like Grammarly or WhiteSmoke.

I wouldn’t recommend this tool at all if you’re into professional writing work.


  • Free to use the software.
  • Suggests a variety of errors.
  • The user interface is simple and easy to understand.
  • The grammar checking of the tool is fast.


  • A lot of information to digest.
  • No real-time error checking.
  • The error description provided for a type of error is always the same.

You may also like to check these best Grammarly alternatives.

8. Hemingway Editor

Hemingway takes a different route when compared to the other proofreading tools present in the list. Hemingway isn’t just a proofreading tool; in fact, it is much more than that.

best proofreading tools
Best Proofreading Tools

The software can be used to make your article look perfect as a whole, not just with grammar. What I mean by this is, you can make bold, italic, use headings, numbers, links, bullet points, and on top of that, also check all the grammatical and spelling errors in your article.

Official Website: Hemingwayapp.com

In the grammar checking part, the tool suggests a bunch of different errors like; the use of passive voice, complicated sentences, lengthy sentences, and more.

Each error has its color code making it super easy for you to recognize the type of error.


  • There are a lot of features available in the free version of the application.
  • Different color codes for different types of error.
  • Apart from grammatical errors, you can make other content changes with the app.


  • The errors suggested aren’t very accurate.
  • No browser extension.
  • The only desktop app is available.

You may also like to check this best list of email greetings.

9. Spell Check Plus

Spell check plus is a free basic online proofreading software out of the many available in the market. They monetize the site with advertisement and, in return, provide us the tool.

online proofreading tools
Best Proofreading Tools

Official Website: spellcheckplus.com

To use the tool, you don’t need to create an account. All you need to do is copy-paste your document in the editor and click on the “Check Text” button and let the software do the magic for you.

Once the document scanning is complete, at the bottom, you’ll see a summary of all the errors with different color codes for better understanding.

If you don’t like the ads that pop up on the website, you can buy the pro version of the tool, which starts at just $14.99/lifetime, and you’ll have Spell Check Plus completely ad-free.


  • Free Software.
  • It gives you a summary of all the errors.
  • No account creation needed to check the errors.


  • Annoying ads.
  • Suggests very basic errors.

10. Reverso

Reverso is the last proofreading tool that made it in our top ten list. It is a free online web app where you can check unlimited words for grammatical and spelling mistakes.

free best proofreading tools
Best Proofreading Tools

Official Website: reverso.net

The main attraction for the Reverso tool is that it can translate your text in various other languages instantly. Not only that, but the tool is also available as a browser extension both for Android and iOS.

The user interface of the tool is commendable, as it is easy to use.

My final take on the Reverso tool is, it is a decent tool if you’d like to check only the basic grammatical errors.

However, for anyone who is writing a book or blog article, I’d never recommended you Reverso because the errors suggested by the tool aren’t enough to make your article and books perfect.


  • Completely free to use.
  • Available for mobile phones and as a browser extension.
  • A handy dictionary feature.


  • A very limited set of error suggestions.

You may also like to check this Ginger software review.

Which Online Proofreading Tool Would I Recommend You?

Well, there’s a tough call between all the tools as out of the many available in the market, we choose only the top ten of it.

Although being in the top ten, we need to select the top best in the following categories:

Best Paid Proofreading Tool According to GrammarChecker.online

If you ask me, the only tool I’d like to spend my money on is Grammarly premium.

Although the tool is a bit expensive; however, the features and the error accuracy you get with Grammarly is impressive and worth every dollar you spend.

Try Grammarly Premium Plan

Best Free Proofreading Tool According to GrmmarChecker.online

Talking about the free version of the tool, if you don’t have the right resources to buy a best-paid proofreading tool, I’d highly recommend you give Grammarly free version a try – it is simple and super easy to use.

Try Grammarly For Free

Final Words For Best Proofreading Tools

I hope you found our article on the top ten best proofreading tools (software) helpful, and if you did do consider sharing it with your friends who are into writing.

If you still have any further queries drop down a comment below and let us know how we can help you further.

Keep visiting Grammarchecker.online

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