Firefox users often choose the browser for privacy—but that doesn’t stop leaks when you paste a screenshot into chat. A bug report with a customer phone number, a staging dashboard with API keys, or a wiki with employee emails can still expose sensitive data.
Blur Page Extension Firefox masks content on the live webpage, then lets you drag a capture region and export a redacted image—all processed locally in your browser.
Live Page Redaction, Built for Firefox
BlurPage flips the usual workflow: protect the page first, capture second.
That matters when you work in long-lived tabs—Jira boards, GitHub issues, CRM tickets. You refresh and iterate; BlurPage keeps masks across reloads so you don’t rebuild redactions every time.
From blurpage.online:
- Works on http/https pages
- Masks persist after reload
- 100% local processing
- Click masks, area masks, pixelate, blur, toolbar, undo/redo, and drag screenshot
Install Blur Page on Firefox
1. Get the add-on from Mozilla
Visit Blur Page on Firefox Add-ons and click Add to Firefox.
2. Pin it to the toolbar
Open the Extensions menu (puzzle piece) and pin Blur Page for quick access.
3. Open a normal website and activate
Click the BlurPage icon on any standard webpage. The floating toolbar appears.
Not supported: Built-in
about:pages and browser chrome.
Two Ways to Mask: Click vs Drag
Element click masks — Click any field, avatar, or UI block. One click applies; click again removes.
Area drag masks — Draw a rectangle over mixed ticket threads, sidebars, or dashboard cards.
Both use the same floating toolbar with undo/redo.
Blur or Pixelate: Which to Pick?
Frosted blur — Soft look for walkthroughs and training slides.
Pixel mosaic — Clear “intentionally hidden” signal for support and compliance screenshots.
Tune color, intensity, and corner radius per mask.
Capture Without Leaving the Tab
- Finish masking on the live page
- Click the camera button
- Drag the region → Preview → Save, Done, or Cancel
Redactions are baked in; the toolbar is excluded.
Three Firefox Workflows
Open-source & bug trackers — Mask emails and tokens in GitHub or Bugzilla screenshots before filing.
Remote teams on Linux — Mask client names on internal wikis before Meet or Teams screen share.
Creators & tutorials — Mask staging credentials on the live page before OBS recording or blog captures.
Firefox FAQ
Does it work on all websites?
Regular http/https yes. Built-in about: pages no.
Will masks disappear on refresh?
No—masks persist after reload.
Copy to Slack or Notion?
Yes—use Done to copy to clipboard after preview.
Different from image editors?
BlurPage masks the live page during long sessions and screen sharing.
Need help? support@blurpage.online
Get Started
👉 Add Blur Page to Firefox
👉 Visit blurpage.online
Also on Chrome — see Blur Page Extension Chrome.