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Private Grammar Checker - Harper icon

Private Grammar Checker - Harper

The private grammar checker for 21st Century English

用户数40K当前公开安装规模
评分4.2商店平均评分
评论数101公开评论体量
Manifest 版本V3插件平台版本
7日增长0近 7 天净增用户
7日增长率0%相对周增长速度
视觉预览

Private Grammar Checker - Harper 媒体预览

3 项素材
趋势

用户增长趋势

按已采集快照查看用户数变化。

用户增长趋势

40K40K40K40K40K2026年7月15日2026年7月18日2026年7月21日最新值: 40K
评分趋势

近 7 日评分趋势

展示最近 7 日窗口内已采集的评分快照,辅助判断近期评分是否稳定。

7 日评分变化

起始值
4.14
最新值
4.17
7 日评分变化
+0.03
4.144.154.154.164.172026年7月15日2026年7月18日2026年7月21日最新值: 4.17
2026年7月15日2026年7月21日
增长概览

日/周/月增长表现

同口径展示 1 天、7 天、30 天的绝对增长与增长率。

1日增长持平
00%
7日增长持平
00%
30日增长增长
+10K+33.3%
技术摘要

版本、语言与抓取信息

查看发布时间、版本、支持语言、最近更新和抓取时间。

版本1.12.0
ManifestV3
大小15.46MiB
语言数1English
发布时间
最近更新
最近抓取
English
简介

插件简介

查看插件说明、主要功能和适用场景。

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.

评价

最新评论快照

查看最近评论和评分分布。

商店综合星级4.2Chrome 商店给出的聚合评分,包含只有打分但没有同步评论正文的情况
已同步评论均分3.9仅基于下方已同步评论正文计算
有内容评论70已同步的评论正文数量
总评分/评论数101Chrome 商店公开评分/评论计数

商店综合星级:4.2。下方星级分布只统计已同步评论正文;如果某个插件只有公开分数、没有真实评论正文,这里可能为空。

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37
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1
9
Paul Grant2026年2月12日
3

It's fine. The UI is a bit clunky it seems to flag up errors that aren't errors more often than LanguageTool. Doesn't work on every site, but the devs are quick to fix bugs.

版本 1.6.0语言 en
1 有用 · 0 无用
Music Mayer2026年2月12日
1

Piece of garbage.... does a TERRIBLE job of finding grammar errors. Also, the tool gets in the way more than it helps... it does not easily allow editing an error, forcing you to choose one of its options even if none apply, Disappointed in the LanguageTool going the paid route. It works really well.

版本 1.6.0语言 en
2 有用 · 3 无用
Neveah Vann Edwards2026年2月6日
4

Could use some work, but overall my experience has been good.

版本 1.5.1语言 en
2 有用 · 0 无用
Thibault Milan2026年2月5日
4

Works great for English, but trashing LT for not being as fast while it's handling way more language than yourself is a bit cheap.

版本 1.5.1语言 en
4 有用 · 2 无用
Sasha Virtpunk2026年2月4日
1

The extension is only available in English, with no other language options, making it pointless. Furthermore, it doesn't work in Google Docs, making it doubly pointless. It works well, checking text directly on the page, replacing the now-paid Language Tool.

版本 1.5.1语言 en
1 有用 · 6 无用
Tim Harman2026年2月2日
5

What a great addon. It's not as featureful as the cloud versions, but it's opensource and it's FAST. Thank you!

版本 1.5.1语言 en
3 有用 · 0 无用
victor2026年2月1日
4

it works great for what i have uses for. 8/10 would recommend. slight issue that brings it down to 4 stars is that in some websites i tested, it didn't work well, if at all.

版本 1.5.1语言 en
1 有用 · 0 无用
Sithu2026年1月29日
5

Great! Small suggestion: Make it so that there's some delay or checks the written word after a space is inputted. Example: If I try to write the word tremendous, when I write "trem", it is already highlighting and saying its misspelled. Add some delay or wait until I type "trem " for it to determine if it's misspelled or not.

版本 1.5.1语言 en
2 有用 · 0 无用
Sash Sashsz2026年1月29日
4

Overall, good. I'd expect more grammar rules to be implmented and also has dictionary spell check e.g. to check if word "implmented" is missing letters or misspelled.

版本 1.5.1语言 en
Josh Noronha2026年1月28日
3

I enjoy this more than Grammarly, but it doesn't tend to work on Google Docs. I can only recall seeing it in action briefly, but I have used the Harper website, and it does give great spellchecks and grammar fixes. That being said, if the developer does fix this and gets it to activate on Docs, then this is a five-star extension. Keep up the good work Elijah.

版本 1.5.1语言 en