StackTools vs Multify

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

StackTools compared with Multify
Detail	StackTools	Multify
What it does	Private browser tools for everyday work	Free AI browser extension for Chrome and Firefox
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	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	Doubleslash shortcut for writing and research anywhere AI-powered Gmail research to look up email senders Chat with any website to summarize and extract information Save links, posts, podcasts and videos to Stash MCP integration with AI agents like Claude and ChatGPT Works on Chrome and Firefox desktop browsers
What makes it different	Files process in your browser with no uploads to servers No account, no credit card, no friction Works offline after first visit	Free to install and use with no payment required Operates directly in your browser without a separate app User maintains full control over what is shared and sent Integrates with existing AI agents through MCP protocol
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	8 no change since last check	31 no change since last check
Trust Flow (Majestic)	4	0
Citation Flow (Majestic)	14	23
Referring domains (Majestic)	4	23

4 details filled in for both companies.