Write better. Faster. Everywhere.
MerciApp fully integrates into your browser, so it’s there wherever and whenever you need it. From email and chat apps to CRMs and web tools, it catches mistakes and offers suggestions in real time
Add to Firefox 
Add to Chrome 
Add to Edge
Oops! The MerciApp extension isn’t compatible with your browser yet. You can start using MerciApp right away with one of the browsers below:
Did you know you can use MerciApp directly in our online editor?
Real-time writing assistance
MerciApp spots mistakes, suggests improvements and keeps your text polished, across all your favorite online tools- Gmail & Google Workplace, Slack, Facebook, WordPress, Salesforce and Hubspot. We also support Microsoft Office with Word and Outlook extensions. Wherever you write, MerciApp has your back.
One extension. Infinite power.
Installing MerciApp has never been easier. Just add our lightweight extension to your browser and you’re ready to go. Our online editor works seamlessly with text fields in all your favorite tools- WordPress, PrestaShop, Facebook, X, Hubspot, Gmail and more. Real-time corrections wherever you type.
Add MerciApp to your browser
MerciApp for Chrome
Over 65% of internet users are on Chrome, so of course we are too. Install from our site or directly from the Chrome Store.
MerciApp for Firefox
Firefox users, we’ve got you covered too! Find us in the Mozilla Add-Ons catalog or hit the button below to get started.
MerciApp for Edge
On Edge? So are we. You can find MerciApp in the Edge Add-Ons catalog.
Get started with the MerciApp extension
Download the browser extension
Uh-oh! Can’t see your browser? Find out more.
Create your MerciApp account
Almost there! Set up your account and turn on corrections in just a couple of clicks.
Start correcting your texts
MerciApp scans your texts, highlights mistakes and suggests improvements. You stay in control, just pick the corrections you want.
