Is Modify Header Value (HTTP Headers) Safe? — Extension Safety Profile
Quick verdict: Modify Header Value (HTTP Headers) earns a safety grade B, 71.4 out of 100, based on 5 of 5 dimensions.
71.4/100
Grade B · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
Modify Header Value (HTTP Headers) earns a safety grade of B (71.4/100), measured across 5 of 5 dimensions. Its strongest area is Maintenance & Ownership (100%). The weakest is Community Reputation (57%) — what holds its grade back the most.
On the public records we can check, Modify Header Value (HTTP Headers) looks broadly trustworthy. 40,000 active users/installs reported on the store. Store rating 3.4/5 from 50 user ratings. Last updated on the store 2026-06-14. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Modify Header Value (HTTP Headers)'s own store listing and privacy policy before installing, and weigh it against the other developer tools extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts | Automated signals | |
| Permissions & Access | 65% · 16.2/25 pts | Automated signals | |
| Data & Privacy | 83% · 13.2/16 pts | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts | Automated signals | |
| Community Reputation | 57% · 5.8/10 pts | Automated signals |
In-depth safety analysis
This extension requests the declarativeNetRequest permission with host access, which allows it to modify HTTP headers on any website you visit. Combined with storage, it can save your custom header rules. This scope is exactly what a header-editing tool needs to function, and it is expected for its category.
Any extension that can intercept and change all web traffic carries inherent power. Typical risks include header injection, cookie tampering, or bypassing security policies if the developer were to become malicious. A careful user should only grant such broad access to tools from publishers they trust, and be cautious with unofficial copies or clones. The extension’s privacy declarations state that data is not sold or used for unrelated purposes, which is a positive signal, though they are self-reported.
The fact sheet shows a score of 71.41, placing it in grade B. The strongest dimension is Maintenance & Ownership, with a perfect 100%, suggesting it is actively updated and well‑maintained. The weakest is Community Reputation, scoring just 57%, which may reflect a modest number of reviews or mixed user feedback. This combination suggests a capable tool from a publisher with limited public track record, so a practical and informed approach is advisable.
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind Modify Header Value (HTTP Headers)?
- Publisher Grephy
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 17 Developer Tools extensions we track, Modify Header Value (HTTP Headers) scores higher on safety than 24% of them.
Computed from our own database of assessed Developer Tools extensions — updated as we track more.
Evidence on File (12)
Modify Header Value (HTTP Headers) FAQ
- Is Modify Header Value (HTTP Headers) safe?
- Modify Header Value (HTTP Headers) earns a safety grade of B (71.4/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind Modify Header Value (HTTP Headers)?
- Modify Header Value (HTTP Headers) is operated by Grephy.
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