C2PA Lab vs Steward

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

C2PA Lab compared with Steward
Detail	C2PA Lab	Steward
What it does	Free browser-based C2PA Content Credentials checker and provenance viewer	A Mac app that turns GitHub pull-request notifications into a sorted inbox with AI-assisted code review
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Paid
Pricing	Not given	$10 one-time purchase at launch, then $20 for future customers. All future updates included. 14-day free trial available.
Key features	C2PA Manifest Viewer - inspect manifest store, claim, assertions, ingredients and raw JSON C2PA Metadata Inspector - read signer, source disclosure, counts, identifiers and checksum in structured table C2PA URL Checker - inspect remote image, video, audio or PDF provenance from public URL C2PA PDF Checker - check Content Credentials in PDF files and review signature validation evidence Local browser inspection via WebAssembly - no file uploads Supports JPEG, PNG, WebP, AVIF, HEIC, HEIF, SVG, MP4, MOV, MP3, WAV and PDF files up to 200 MB Cryptographic verification state with signer and issuer information Provenance timeline with recorded actions and ingredient references	Sorted inbox that separates pull requests into Needs my eyes and FYI categories Morning report with daily briefing of pending reviews Layered diff viewer with logical code organization Code folding for TypeScript, JavaScript, and Ruby Keyboard shortcuts for quick actions Reviews ranked by importance and impact Automatic morning report even when app is quit
What makes it different	Files never leave your device - all inspection runs locally in your browser Independent tool not affiliated with or endorsed by the Coalition for Content Provenance and Authenticity Reports evidence not verdicts - no authenticity percentages or false claims Multiple inspection views for different user needs and expertise levels Privacy-focused with non-sensitive usage metrics only via Google Analytics	Layers diffs logically by code flow rather than alphabetically so you read them in writing order Separates actionable notifications from informational ones so less noise reaches your inbox Runs entirely on your Mac with no code sent to external servers
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)	2 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	26	0
Referring domains (Majestic)	16	0

4 details filled in for both companies.

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