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
  • 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
  • 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
  • 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)

  • Step 1

    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.

  • Step 2

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

  • Step 3

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

  • Step 4

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

  • Step 5

    ...and the marker will be gone.

  • Step 6

    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.

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: