OpenCapture vs InstaPrompt

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

OpenCapture compared with InstaPrompt
Detail	OpenCapture	InstaPrompt
What it does	Free full-page screenshot browser extension for Chrome, Edge and Firefox	Highlight text on any web page and get an instant AI result. No tab switching. No copy-pasting.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: Full-page, visible-area and selected-area capture, crop, draw, text, shapes, blur, unlimited undo, and export to PNG or PDF. Supporter: $5 for 1,000 credits (one-time, includes tiled logo or text watermark with custom opacity, position, and angle).	Free: ~25 AI uses per month, 3 saved responses, 3 custom prompts, 1 label. Starter: $4.99/month or $3.25/month billed annually, ~500 AI uses per month, 10 saved responses, 15 custom prompts, 5 labels. Pro: $11.99/month or $8.25/month billed annually, ~2,500 AI uses per month, choose any AI model, br
Key features	Full-page screenshot capture Visible-area and selected-area capture modes Crop and resize images Draw, text and shapes annotation Blur sensitive information Unlimited undo Export to PNG or PDF Capture history with last 50 screenshots Tiled watermark (Supporter feature)	Select and click to run prompts on highlighted text Right-click menu access to all prompts Keyboard shortcut Alt+Shift+X for quick access Popup launcher to paste or type text Context Labels for saving tone and brand voice Replace selected text with AI output Cloud sync across multiple devices Choice of AI models on Pro plan
What makes it different	Completely open source under AGPL-3.0-or-later so users can verify no data collection All processing done locally with no uploads unless buying credits No account required for all core features One-time payment for Supporter feature instead of subscription Stitches full pages into seamless single images	No API key required to get started with built-in AI Works on any website without tab switching or copy-pasting Context labels save and attach your tone to every prompt
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)	Not checked yet no change since last check	1 no change since last check
Trust Flow (Majestic)	21	3
Citation Flow (Majestic)	21	18
Referring domains (Majestic)	25	10

5 details filled in for both companies.

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