LanguageTool Plus is a proofreading service
for English and German

For example, detects the typo in 'ISBN 978-1784713936' Detects errors like 'Sehr geehrte Frau Andreas Müller' For example, suggests 'found' in 'Man returns wallet he fount.' Some examples:
  • Create two strips with an event amount of wax on each strip. -> even
  • I'm kinder bored. -> kind of
  • I don’t the answer. -> verb missing
input: text, output: JSON with the detected error

Pricing

Free

2500 characters per check (instead of 1500)

  • More than 1700 patterns for finding errors (English)
  • More than 2400 patterns for finding errors (German)
  • Add-on for Microsoft Word (more...)
  • Detection of wrong gender in salutation (German only)
  • Additional word pairs for statistical detection of typos
  • Detection of incorrect checksums in ISBN and IBAN numbers (German only)
  • Detection of more than 75 other additional errors
  • API access

0€

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A good fit for everyone

Premium



40,000 characters per check

  • More than 1700 patterns for finding errors (English)
  • More than 2400 patterns for finding errors (German)
  • Add-on for Microsoft Word (more...)
  • Detection of wrong gender in salutation (German only)
  • Additional word pairs for statistical detection of typos
  • Detection of incorrect checksums in ISBN and IBAN numbers (German only)
  • Detection of more than 75 other additional errors
  • API access

can be cancelled any month
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all prices incl. VAT
For students, authors, freelancers

Enterprise

40,000+ characters per check

  • More than 1700 patterns for finding errors (English)
  • More than 2400 patterns for finding errors (German)
  • Add-on for Microsoft Word (more...)
  • Detection of wrong gender in salutation (German only)
  • Additional word pairs for statistical detection of typos
  • Detection of incorrect checksums in ISBN and IBAN numbers (German only)
  • Detection of more than 75 other additional errors
  • API access

 

A good fit for companies, agencies, publishing houses

Add-on for Microsoft Word

We offer an add-on (beta version) for Microsoft Word 2013 and 2016 on Windows, exclusively for Premium users.

(Download available to premium users only)

With the help of the word add-on you can use languagetoolplus.com directly in Word. After installing the add-on, you will have a “Check Page” button in the top right-hand corner of your document. Whenever you would like to check your text, just click that button.

After languagetoolplus.com has checked your text, the detected incorrect words and phrases will be highlighted.

If you click on one of these highlighted words, a window will pop up giving you an explanation and a suggestion.

If you click on a suggested correction, it will substitute the original word...

...and the marker will be gone.

After you have completely checked your text, you just have to click on “Close Check” and that's it!

Add-on for Firefox and Chrome

LanguageTool Plus also works in your browser - check the text you enter in text fields, or check selected text on websites.

Download for Firefox
Download for Chrome

To use the premium features (more error detection rules, support for longer texts) with the add-on, configure it like shown in the videos below:

Click for Firefox settings · Click for Chrome settings