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
Some examples:
  • Da Auto fährt schnell. → Das
  • An machen Stellen könnte es eng werden. → manchen
  • Ich kann ein Häuschen mit Garten mein eigen nennen. → Eigen
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-in for Microsoft Office (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 200 other additional errors (English)
  • Detection of more than 300 other additional errors (German)
  • API access

0€

Sign Up
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-in for Microsoft Office (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 200 other additional errors (English)
  • Detection of more than 300 other additional errors (German)
  • API access

you save ~ 65%
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-in for Microsoft Office (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 200 other additional errors (English)
  • Detection of more than 300 other additional errors (German)
  • API access

per month · API details
A good fit for companies, agencies, publishing houses

Add-in for Microsoft Office

We offer an add-in for Microsoft Word 2013/2016 and Outlook 2013/2016 on Windows, exclusively for Premium users. No character limit here - use with documents of any length!

(Download available to premium users only)

Mac user? Please use our add-in at AppSource. It supports all versions of Word 2016: on Windows, Mac, and Online Office

  • Step 1

    With the help of the word add-in you can use languagetoolplus.com directly in Word. After installing the add-in, 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 errors will be shown in a list.

  • 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.

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 as shown in the videos below:

ABACUS Business Software
Papyrus Autor
INVARIS Informationssysteme GmbH
korrekturen.de
rechtschreibpruefung24.de
IServ

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