MockHeader
From ModHeader
Open-source ModHeader alternative
Permanently free. Local only. Import a ModHeader JSON export and keep editing headers in the same popup workflow. No account, no analytics, no backend.
MIT licensedLocal storageNo telemetryManifest V3
Import a ModHeader profile
- In ModHeader, export the profile as JSON.
- Open MockHeader and choose Import in the profile rail.
- Paste the JSON or choose the exported file, then select Import profiles.
MockHeader converts request and response headers, compatible URL and resource filters, and URL replacements. Browser-specific tab and window IDs are intentionally ignored because they are no longer valid after migration.
Why move to MockHeader?
| Concern | MockHeader |
|---|---|
| Source | Public MIT repository |
| Data | Rules remain in chrome.storage.local |
| Account | Not required |
| Network | No analytics or backend requests |
| Workflow | Editable rows, profiles, toggles, filters, and redirects |
Independent project
MockHeader is an independent project and is not affiliated with or endorsed by ModHeader. The name ModHeader is used only to explain profile compatibility and migration.