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Best alternatives to HTTP Header Spy (2026)

10 Chrome extensions that do a similar job to HTTP Header Spy, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.

HTTP Header Spy: reviews, users and permissionsBest Developer Tools extensions

HTTP Header Spy today

≈9K users3.8★ from 61 ratingsUpdated 2 months ago7 permissions

HTTP Header Spy alternatives, compared

  1. 1

    ModHeader Extension: HTTP Header Editor

    Modify headers, cookies and redirects. Add, edit or remove custom HTTP headers. Ad free, local ModHeader alternative.

    ≈4K users4.2★ from 20 ratingsUpdated in the last day5 permissions
    • About 2.3× fewer users than HTTP Header Spy
    • Rated 0.4 stars higher
    • Updated more recently
    • Asks for fewer permissions (5 vs 7)
    ModHeader Extension alternativesCompare side by side
  2. 2

    Header Override: Modify HTTP Headers & Cookies

    Modify request headers, response headers, and cookies with local URL rules and profiles.

    ≈2K users5.0★ from 20 ratingsUpdated 3 weeks ago3 permissions
    • About 4.5× fewer users than HTTP Header Spy
    • Rated 1.2 stars higher
    • Asks for fewer permissions (3 vs 7)
    Header Override alternativesCompare side by side
  3. 3

    ModHeader v2

    Modify HTTP request and response headers, cookies, redirects and CSP. All data stays on your device.

    ≈30K users3.4★ from 9 ratingsUpdated 4 months ago5 permissions
    • About 3.3× more users than HTTP Header Spy
    • Asks for fewer permissions (5 vs 7)
    ModHeader v2 alternativesCompare side by side
  4. 4

    HTTP-TRACKER

    Real-time network monitor & HTTP inspector: track headers and cookies, export cURL, block URLs, and modify outgoing headers.

    ≈9K users5.0★ from 36 ratingsUpdated 3 days ago6 permissions
    • A similar number of users to HTTP Header Spy
    • Rated 1.1 stars higher
    • Updated more recently
    • Asks for fewer permissions (6 vs 7)
    HTTP-TRACKER alternativesCompare side by side
  5. 5

    Modify Http Header

    Modify Http Request Or Response Header.

    ≈1K users3.8★ from 4 ratings3 permissions
    • About 9.0× fewer users than HTTP Header Spy
    • Asks for fewer permissions (3 vs 7)
    Modify Http Header alternativesCompare side by side
  6. 6

    HTTP Header Injector

    Easily inject custom HTTP headers into your browser requests. Toggle on/off, filter by domain, and manage multiple headers.

    ≈4K users4.2★ from 5 ratingsUpdated 4 months ago3 permissions
    • About 2.3× fewer users than HTTP Header Spy
    • Asks for fewer permissions (3 vs 7)
    HTTP Header Injector alternativesCompare side by side
  7. 7

    xHeader - Modify HTTP headers

    A modern ModHeader alternative for modifying request headers and response headers with profiles, filters, tab targeting, and sync.

    ≈5K usersNot rated yetUpdated 4 months ago4 permissions
    • About 1.8× fewer users than HTTP Header Spy
    • Asks for fewer permissions (4 vs 7)
    xHeader alternativesCompare side by side
  8. 8

    HTTP Header Modifier

    Modify HTTP request headers for specific URLs

    ≈5K users4.5★ from 4 ratingsUpdated 6 weeks ago5 permissions
    • About 1.8× fewer users than HTTP Header Spy
    • Asks for fewer permissions (5 vs 7)
    HTTP Header Modifier alternativesCompare side by side
  9. 9

    Modify HTTP Headers (HTTP Header) - FlexHeader

    Add, modify & delete HTTP request/response headers with URL & regex rules. Open-source, private, no data collection

    ≈7K users4.9★ from 31 ratingsUpdated 2 months ago3 permissions
    • A similar number of users to HTTP Header Spy
    • Rated 1.0 stars higher
    • Asks for fewer permissions (3 vs 7)
    Modify HTTP Headers (HTTP Header) alternativesCompare side by side
  10. 10

    Headerly

    Manage and customize HTTP request & response headers with ease. Quickly set, append, or remove headers.

    ≈10K users5.0★ from 15 ratingsUpdated 7 weeks ago3 permissions
    • A similar number of users to HTTP Header Spy
    • Asks for fewer permissions (3 vs 7)
    Headerly alternativesCompare side by side

HTTP Header Spy alternatives: questions

What is the best alternative to HTTP Header Spy?

By users, the most popular alternative is ModHeader v2 with ≈30K users and a 3.4-star rating. The closest match by what it does is ModHeader Extension: HTTP Header Editor.

Is there a HTTP Header Spy alternative that asks for fewer permissions?

Header Override: Modify HTTP Headers & Cookies asks for 3 permissions, against 7 for HTTP Header Spy.

How many alternatives to HTTP Header Spy are there?

We list 10 close alternatives to HTTP Header Spy on the Chrome Web Store, picked by what they do and ranked by how close they are.

Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.