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Headerly

By Brian Zhou

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

Time on the storeAbout 1 to 3 yearsA rough range, not an exact date
Store users≈9KRounded by the Chrome Web Store
Chrome Web Store rating5.0 / 514 ratings on the Chrome Web Store
Last store update21 Sep 2026Version 1.21.0, 15 days ago

Inside the extension

Reviews

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Permissions & access

Access levelHigh

Can read and change every website you visit.

What it’s allowed to do, not what it actually does. Not a safety rating.

Permissions 3

Sensitive1

  • Read and change data on every website<all_urls>

Standard2

  • Save its own settingsstorage
  • Block or redirect requests with set rulesdeclarativeNetRequest

Members also see when a new version asks for new access.

Website access All

  • All websites
Extension ID
lmlapacaojgifapgjkbdkmaclkgcbhng
Package size
1.29MiB
Manifest
Version 3

The maker

Brian Zhou has 4 listings on the store. Updates most of their listings often.

Listings
4
Combined store users
≈19.1K
Store Featured
2
Updated in the last 90 days
2 of 4

Combined users can count the same person more than once. See all 4 listings

Ext Watch AI

Should you build in this niche?

One research report for Headerly. Reports come with Plus, Pro and Max.

  • Takeaway & demandCited takeaway and search volumes
  • Traffic & domainPopularity rank, visits and authority
  • Money & pricingPlans and prices from the maker’s site
  • ReviewsComplaints and praise, quoted
  • Competitors & ranksRank against the closest listings
  • Build opportunityWhat to build and how to position it
  • Every number shows its source and date
  • Ready in a minute or two
  • Report and PDF yours for 30 days
Overview
Explore the store
Opportunities
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Watchlist
Collections
Saved searches
Alerts
Reports
Plans & usage
Account settings
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