1. Install extension → 2. Extension automatically scans text in input fields on all HTTP/HTTPS websites (except Google Docs, Notion, Facebook) → 3. Misspelled Korean words get red underlines → 4. User hovers over underlined text to see correction suggestions → 5. Click to replace with correct spelling → 6. Optional: Use batch correction to fix all errors at once

Target users: Students submitting academic reports / Professionals sending work emails / Job seekers writing cover letters / Anyone writing Korean text in web browsers

Source files are minified making detailed code analysis difficult
Cannot fully verify all spell-checking logic in minified content_script.universal.js
Both external spell-checking APIs (Pusan University and Daum) are third-party services whose availability cannot be guaranteed

Monetization

No paid features detected

No payment, subscription, or premium feature code found. No matches for price, payment, purchase, buy, premium, or paywall. The 'upgrade' keyword match was from HTTP header 'upgrade-insecure-requests' and React minified code - false positives. Both spell-checking APIs are free public services. No billing logic or feature gating found in source code.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: No authentication code found. No matches for login, signin, account, auth, or token keywords. The extension uses two public, free spell-checking APIs (speller.cs.pusan.ac.kr and alldic.daum.net) that require no authentication. The popup UI contains no login forms. Extension works entirely without user accounts.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：storage
主机权限覆盖范围较宽

Publisher

whale.grammar

Independent publisher

Email: [email protected]
Phone: --
Address: --

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Permissions

Host access