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HighlightGPT vs StackTools

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

HighlightGPT compared with StackTools
DetailHighlightGPT logo HighlightGPTStackTools logo StackTools
What it doesA browser extension that lets you ask, explain, translate, and memorize from highlights using ChatGPT's native responses Private browser tools for everyday work
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelNot given Free
PricingFree: $0/Lifetime includes highlight toolbar inside ChatGPT, ask/explain/translate, view answers in side panel, manually save to ChatGPT memory. Pro: $8/Lifetime adds remove ads, unlimited saving to ChatGPT memory, priority support, early access to new features. Not given
Key features
  • Highlight toolbar inside ChatGPT
  • Ask questions directly from highlighted text without retyping
  • Translate ChatGPT replies while preserving tone and nuance
  • Save important answers to ChatGPT memory
  • Context-aware replies in side panel
  • Zero extra tokens usage
  • PDF merge, split and compress
  • Convert Word, Excel, images to PDF
  • OCR, redact and protect PDFs
  • Compress images (JPG, PNG, WebP, AVIF)
  • Convert HEIC images
  • Background removal
  • On-device image upscale
  • Works offline after first load
  • No signup required
What makes it different
  • Zero extra tokens - no additional token usage while using ChatGPT's native responses
  • Side panel design keeps you reading ChatGPT uninterrupted
  • Privacy-first with answers generated only by ChatGPT
  • Files process in your browser with no uploads to servers
  • No account, no credit card, no friction
  • Works offline after first visit
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)32 −1 (down) since last check8 no change since last check
Trust Flow (Majestic)84
Citation Flow (Majestic)1914
Referring domains (Majestic)324

3 details filled in for both companies.

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