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Header Override vs Group Posting Pro

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 Group Posting Pro
DetailHeader Override logo Header OverrideGroup Posting Pro logo Group Posting Pro
What it doesOpen-source browser extension to modify HTTP request and response headers and cookies Facebook group auto poster and scheduler for Chrome and Edge
StageNot given Not given
FoundedNot given 2023
Based inNot given HU
Pricing modelOpen source Freemium
PricingNot given Lite (Free): 5 group-posts a day, five lifetime AI uses. Plus: €69 per year. Pro: €14 for first month, then €24/month (or €39 quarterly / €119 yearly). Agency Starter: €199/month (or €1,990/year). Agency Scale: €349/month (or €3,490/year).
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
  • Auto posting to multiple Facebook groups from one composer
  • Lead Radar to spot people asking for what you sell
  • One-time, daily, and weekly scheduling
  • Campaign builder with trigger, post, wait, loop, and stop blocks
  • Text, links, images and video posting
  • Agency dashboard for managing multiple client accounts
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
  • Never requires your Facebook password; posts from your own logged-in browser session
  • Works after Meta retired the public Groups API by using Direct API and Classic DOM posting methods
  • AI variations ensure each group gets different wording of the same post
  • Integrated Lead Radar monitors chosen keywords in real time to find buying signals
  • Built by the makers who use it daily for their own business
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 check4 no change since last check
Trust Flow (Majestic)33
Citation Flow (Majestic)1826
Referring domains (Majestic)1378

4 details filled in for both companies.

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