Private Grammar Checker - Harper door Elijah Potter
A private grammar checker for 21st Century English
Beschikbaar in Firefox voor Android™Beschikbaar in Firefox voor Android™
1.759 gebruikers1.759 gebruikers
Metagegevens van extensie
Schermafbeeldingen
Over deze extensie
Harper is an English grammar checker designed to be just right. I created it after years of dealing with the shortcomings of the competition.
Grammarly was too expensive and too overbearing. Its suggestions lacked context, and were often just plain wrong. Not to mention: it's a privacy nightmare. Everything you write with Grammarly is sent to their servers. Their privacy policy claims they don't sell the data, but that doesn't mean they don't use it to train large language models and god knows what else. Not only that, but the round-trip-time of the network request makes revising your work all the more tedious.
LanguageTool is great, if you have gigabytes of RAM to spare and are willing to download the ~16GB n-gram dataset. Besides the memory requirements, I found LanguageTool too slow: it would take several seconds to lint even a moderate-size document.
That's why I created Harper: it is the grammar checker that fits my needs. Not only does it take milliseconds to lint a document, take less than 1/50th of LanguageTool's memory footprint, but it is also completely private. That's the power of open source.
Grammarly was too expensive and too overbearing. Its suggestions lacked context, and were often just plain wrong. Not to mention: it's a privacy nightmare. Everything you write with Grammarly is sent to their servers. Their privacy policy claims they don't sell the data, but that doesn't mean they don't use it to train large language models and god knows what else. Not only that, but the round-trip-time of the network request makes revising your work all the more tedious.
LanguageTool is great, if you have gigabytes of RAM to spare and are willing to download the ~16GB n-gram dataset. Besides the memory requirements, I found LanguageTool too slow: it would take several seconds to lint even a moderate-size document.
That's why I created Harper: it is the grammar checker that fits my needs. Not only does it take milliseconds to lint a document, take less than 1/50th of LanguageTool's memory footprint, but it is also completely private. That's the power of open source.
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Toestemmingen en gegevens
Vereiste machtigingen:
- Browsertabbladen benaderen
- Uw gegevens voor alle websites benaderen
Optionele machtigingen:
- Uw gegevens voor writewithharper.com benaderen
Meer informatie
- Add-on-koppelingen
- Versie
- 1.6.0
- Grootte
- 14,65 MB
- Laatst bijgewerkt
- 4 dagen geleden (4 feb. 2026)
- Verwante categorieën
- Licentie
- Apache-licentie 2.0
- Versiegeschiedenis
- Toevoegen aan collectie