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Trimless for Gmail™ V3 vs Header Override

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

Trimless for Gmail™ V3 compared with Header Override
DetailTrimless for Gmail™ V3 logo Trimless for Gmail™ V3Header Override logo Header Override
What it doesAutomatically expand clipped Gmail messages and stop clicking 'View entire message' forever Open-source browser extension to modify HTTP request and response headers and cookies
StageStartup Not given
Founded2024 Not given
Based inBE Not given
Pricing modelNot given Open source
PricingFree 7-day trial with all features (no credit card required). After trial: Lifetime access for $4.99 one-time payment, or free with 5 expansions per day. 30-day money-back guarantee. Not given
Key features
  • Works seamlessly with Gmail threads and nested email replies
  • Customization options for color schemes and indentation levels
  • Cross-device syncing via account login
  • Toggle extension on or off instantly from browser
  • Zero data collection and privacy-first design
  • 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
What makes it different
  • Saves users 100+ clicks daily by eliminating manual 'View entire message' button clicks
  • Privacy-first approach with zero data collection and no external data transmission
  • Simple 30-second installation with no configuration required
  • 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
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)26 no change since last check8 no change since last check
Trust Flow (Majestic)73
Citation Flow (Majestic)1718
Referring domains (Majestic)8613

3 details filled in for both companies.

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