Prototype Feedback Chrome extension logo

Prototype Feedback

Pin comments to elements or regions on any webpage; export as JSON for Claude Code or any LLM.

By Sebastian Buurman
Free
Updated 2026-09-03

Prototype Feedback screenshots

Prototype Feedback Chrome extension screenshot 1
Screenshots from the Chrome Web Store listing for Prototype Feedback.

Overview

Prototype Feedback is a lightweight visual feedback tool for hosted webpage prototypes — built for the LLM-coding era. Click any element on a page to pin a comment to it. Or drag a region for free-form feedback. Each comment captures the element in page context plus a tight crop of the pin target, the CSS selector, the bounding box, and any reference materials you drop in (images, files, Google Docs / Figma / Notion links). Console errors and warnings that fire during your review are captured automatically. Then export — either as a ZIP that Claude Code reads and acts on directly, or as a polished single-file HTML report you can email to a stakeholder. WHO IT'S FOR - Designers and PMs who want to leave precise feedback on a teammate's prototype without screenshots-and-Slack - Developers who use Claude Code / Cursor and want pinned visual feedback that an LLM can act on - Small teams reviewing hosted staging URLs HOW IT WORKS 1. Open any webpage you want to give feedback on. 2. Click the extension and Start feedback session. 3. Pin an element, drag a region, or both. Type a comment. Attach reference images, files, or links if useful.

Pricing

Prototype Feedback is free. There is no paid tier to consider.

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Frequently asked questions

Is Prototype Feedback free?

Yes, Prototype Feedback is free to install and use.

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