OpenDocScan vs ZestyPDF

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

OpenDocScan compared with ZestyPDF
Detail	OpenDocScan	ZestyPDF
What it does	Free document scanner that runs in your browser with no upload, no account, no watermark	Free online PDF tools that run in your browser
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	AE
Pricing model	Open source	Free
Pricing	Free, no paid tier	Not given
Key features	Find and straighten page edges automatically OCR text recognition for searchable PDFs Lighting correction and image enhancement All processing happens locally on device Works offline after page load No account or sign-up required Add to home screen as web app Adjustable page size and image quality Search across all scanned documents	Not given
What makes it different	Entirely client-side with zero data upload—privacy verifiable in Network panel Open source under MIT or Apache-2.0 with code publicly auditable No watermarks, page limits, or paid tier—completely free Advanced processing in 182 KB core written in Rust and WebAssembly Works on any device with no installation via browser	No sign-up required and no watermarks Most tools run directly in your browser Files deleted immediately after processing for server-side tools Honest about tool limitations No daily limits for normal use
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	2
Citation Flow (Majestic)	16	16
Referring domains (Majestic)	4	2

3 details filled in for both companies.