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Features & Capabilities
User Growth & Download Statistics
Manifest V3 Add-on
- By:
- CirnoT
- Daily users:
- 39
- Rating:
- 5.00 (1)
- Version:
- 2.7.0 Last updated: 2026-04-19
- Version code:
- 6227339
- Creation date:
- 2025-08-07
- Risk:
- Moderate risk impact Moderate risk likelihood
- Permissions:
- storage
- declarativeNetRequestWithHostAccess
- storage
- Host permissions:
- <all_urls>
- <all_urls>
- Size:
- 53.21KB
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-15
- Compare stats and ranking:
- Modify HTTP Headers vs HTTP Header Plugin
- Modify HTTP Headers vs HeaderMod
- Modify HTTP Headers vs simple-modify-headers
Ranking
For Developers
Contact the developer
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User Reviews
Very good, works great. Can you please add the source code in the application profile, it's a very sensitive application. 🙏
Edit: I decompile (unzip ...) the app to check the source code. It is safe. Have only one dependancy, no external call, pur joy. Still, I would appreciate to have an easier way to check the source code.
by ac*****, 2026-03-04
Is Modify HTTP Headers Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
Modify HTTP Headers requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
Modify HTTP Headers is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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