Change-by-change review
Every change is listed, shown inside its sentence and labelled: accent, capital, agreement, typography. Reject the ones you disagree with, one at a time.
elle et partie → elle est partie homophone
Grammar checker
Loading the grammar checker…
This text mixes French and English. Which language should Korr correct it in?
Every change
Your dictionary
Saved on this device only.You stay in control of your text
Personal dictionary
Add your proper nouns, brand names and trade words in one click, and Korr stops correcting them. The list stays on your device, with no account.
Kept as written: Peekrapp, N'Golo, SARL
Five languages, five specialized engines
Complex French agreements
Past participles, pronominal verbs and long-distance agreements.
les décisions qu'il a pris → les décisions qu'il a prises
French tenses and subjunctive
Conditional clauses and the subjunctive after expressions such as « bien que ».
si j'aurais su → si j'avais su
French homophones
et/est, ou/où, sa/ça and quand/quant, resolved using context.
elle et partie → elle est partie
French text-message language
Nearly 180 abbreviations are recognized and expanded into proper French.
slt jsui dsl → Salut je suis désolé
French typography
Correct spacing before ! ? : ; without changing URLs or times.
exceptionnel! → exceptionnel !
English grammar
Compound tenses, common confusions, missing words and incorrect expressions.
I have went home → I have gone home
Natural English
Phrases such as could of and incorrectly joined words are caught.
could of, alot → could have, a lot
French-speaker false friends
The word-for-word translations only a French speaker writes, caught and turned into idiomatic English.
assist to the meeting → attend the meeting
Prepositions and uncountables
The preposition each verb takes, and the English nouns that never go plural.
it depends of → it depends on
Spanish diacritics and openings
The accents that change the meaning, dequeismo, queismo and the opening marks Spanish requires.
Como estas? → ¿Cómo estás?
Italian accents and congiuntivo
The grave accent written for the acute, the missing h of avere, elisions and the subjunctive.
perchè non e → perché non è
Portuguese nasals and impersonals
The final tilde a keyboard drops, the impersonal haver and fazer, and the crase of fixed phrases.
houveram opcoes → houve opções
Why “offline” is more than a promise
The correction engines run on your device. This page never sends text to an analysis server because no such server exists.
You can check it yourself: after a first correction in the language you picked, cut your connection. Everything keeps working, because nothing ever needed to leave.
Correct text anywhere on your PC
Install the Windows app, select text in any program - Word, Outlook, Discord or a game - press Ctrl+Alt+C, and Korr replaces it with the correction.
Download Korr for Windows Installer · about 31 MB- Download
Korr-Setup.exe - Double-click the installer
- Follow the short setup wizard
- Launch Korr from the Start menu
- Select text, then press Ctrl+Alt+C
Korr is not digitally signed yet. If Edge blocks the download, open downloads with Ctrl+J, then choose Keep and Keep anyway. If Windows SmartScreen appears, select More info, then Run anyway.
Other ways to use Korr
Web app
Install this page as an app. It opens offline on desktop and mobile devices.
From your browser menu, select “Install app”.
Browser extension
Correct text directly in Gmail, Slack or any text field without copying and pasting.
Works in Edge too, which installs extensions from the Chrome Web Store.