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Header Override vs Stackpeek

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Header Override compared with Stackpeek
DetailHeader Override logo Header OverrideStackpeek logo Stackpeek
What it doesOpen-source browser extension to modify HTTP request and response headers and cookies Free Shopify theme detector and app detector for Chrome and Firefox
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelOpen source Free
PricingNot given Free for theme, app and tracker detection; CSV product export is also free. A paid Store Intelligence tier with organic traffic data, SEO audits and backlink profiles is coming soon.
Key features
  • Modify request and response headers with a focused editor interface
  • Scope rules to specific URLs using browser-supported filter patterns
  • Customize response cookies with Domain, Path, SameSite, Lifetime, Max-Age, and Secure attributes
  • Create up to five local rule profiles for different projects and test setups
  • Import and export profiles as local JSON files between browsers
  • Enable, disable, delete, and annotate rules with comments
  • Support for Chrome, Edge, and Firefox
  • All rules stored locally in browser with no server transmission
  • App fingerprinting with 885 apps in database
  • Tracker identification from Meta, TikTok, Snap, Pinterest, Reddit
  • Product catalogue export to CSV in Shopify import format
  • Up to 10,000 products per export with titles, descriptions, prices, SKUs, tags and image URLs
  • Open source code under MIT licence with published permissions
  • Auto-scan mode to detect Shopify stores across tabs
  • No account signup or browsing history collection
  • Detection results in about one second
  • Headless store detection labeled as headless instead of guessed
What makes it different
  • Open-source with MIT License and full transparency
  • Rules stored entirely locally with no analytics, tracking, or external servers
  • Lightweight alternative to ModHeader
  • URL scoping prevents rules from affecting unintended websites
  • Simple interface requires no coding knowledge
  • Honest detection that labels unverifiable results and custom builds rather than guessing
  • Largest known app database of 885 fingerprinted apps, growing with every scan
  • Simplest workflow requiring only one click with no form submission or waiting
  • No data sent to server during product export; catalogue assembled in browser only
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)14 +6 (up) since last check9 no change since last check
Trust Flow (Majestic)39
Citation Flow (Majestic)1817
Referring domains (Majestic)139

4 details filled in for both companies.

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