Stays in context
Keeps the correction workflow close to the selected text in Firefox.
For Firefox
Polish Firefox Text Without Copy-Paste
Select a Firefox draft where it already lives, review Grammate's suggestion, and replace the text only after you approve it.
A good fit for online forms, browser-based notes, web mail drafts, and writing inside work apps.
There is many peoples who think writing correctly is not important, but it affect how others see your work and make the message harder to understand.
There are many people who think writing correctly is important, but it affects how others see your work and makes the message easier to understand.
Grammate
Review Panel
Corrected text
There is many peoplesThere are many people who think writing correctly is important, but it affectaffects how others see your work and makemakes the message harder to understand.
Processing correction
Replaced in source
Why it Fits Firefox
A practical writing layer for the app you already use.
Keeps edits visible
Makes edits visible before the corrected version replaces your draft.
Fits your workflow
Supports both privacy-focused local mode and easier cloud mode.
How it Works with Firefox
Review first, or replace instantly.
1
Click or Highlight
Click or highlight text in Firefox, then use the Grammate balloon beside your selection.
2
Review the Correction
A focused review panel shows what changed, so grammar fixes stay transparent instead of automatic.
3
Replace When Ready
Accept the rewrite only when it matches your intent. One click sends it back into Firefox.
1
Click Instant
Select text, click Instant, and Grammate replaces it automatically as soon as the correction is ready.
Local or Cloud
Choose private offline correction, or choose faster setup.
Grammate supports both. Keep text on your own Windows PC with Local Mode, or use Cloud Mode when you want less setup work.
Local Mode
- Runs AI on your own Windows PC.
- Your text stays on your machine for stronger privacy.
- Works offline after local model setup.
- No correction cap once local AI is installed.
- Best for private writing, offline work, and full control.
Cloud Mode
- Sends text to our hosted AI instead of your PC.
- Faster setup with no local model download.
- Usually lighter on your device.
- Paid plans raise your daily cloud correction limit.
- Best for convenience, quick start, and less setup work.
Simple Pricing: Free Local Mode, Paid Cloud Volume
Start free with unlimited local correction. Upgrade only if you want more cloud corrections each day.
Free
Unlimited Local Mode + Daily Cloud Trial
Free
Download Free
- Unlimited Local AI forever
- Up to 20 cloud corrections per day
- Best starting point for Windows users
Starter
More Cloud Corrections for Daily Writing
$1.49
$1.99
/month
Choose Starter
- Up to 150 cloud corrections per day
- Best for email, chat, and short drafts
- Lowest-cost cloud plan
Pro
More Headroom for Long-Form Work
$3.75
$4.99
/month
Choose Pro
- Up to 400 cloud corrections per day
- Better for long-form work
- More headroom for repeat edits
FAQ for Firefox
Can Grammate work with Firefox text fields?
Yes, when text can be selected and replaced, Grammate can help with the review-and-replace workflow.
Will Grammate submit a Firefox form for me?
No. Grammate only helps with the selected text. You still decide when to submit the page or message.
Can it help with web mail in Firefox?
Yes. Use Grammate on selected text in web mail drafts, replies, and other browser-based writing fields when selection and replacement are available.
Can I use Grammate with Firefox in local mode?
Yes. Local mode is available when your local AI provider is configured, which is useful when you want a privacy-focused correction workflow on your own PC.
When should I use cloud mode?
Cloud mode is the easier path when you want faster setup and do not want to manage a local model. It is useful for quick everyday correction work.
Is there a free way to try Grammate?
Yes. Start with the free Windows download, then review the pricing page if you need more cloud capacity or paid plan features.
Will Grammate change text in Firefox automatically?
Only if you choose the instant workflow. The review workflow shows the correction first, then you decide whether to replace the selected text.
Try Grammate with Firefox
Download the Windows app, select text where you write, and review the correction before replacing it.
Download Grammate