Top 30 Online Proofing Tools for UI/UX Designers

All‑in‑one prototyping and collaboration suite with real‑time comments, version history, and design system sync.

Cloud‑based design tool with built‑in comment threads, live cursor presence, and instant sharing for rapid feedback.

Design and prototype platform offering Share for Review, where stakeholders can comment directly on designs.

Hosted version of Sketch that lets teams view, comment, and version‑control UI mockups in the browser.

Hand‑off tool that also provides annotated design reviews, comment threads, and style guide generation.

Prototyping platform with a Review mode that captures stakeholder comments, approvals, and design iterations.

Online whiteboard that supports design critique sessions with sticky notes, drawing tools, and threaded comments.

Specialized proofing solution for visual assets, offering markup tools, version control, and client approval workflows.

Enterprise‑grade proofing platform with granular permissioning, automated reminders, and detailed audit trails.

Web‑based review tool that lets designers attach comments, draw annotations, and generate final proof PDFs.

Simple proofing app focused on visual feedback, offering markup tools, version comparison, and client sign‑off.

Collaborative review platform with video, image, and PDF proofing, plus automated workflows and deadline tracking.

Scalable proofing solution for large teams, featuring real‑time annotations, approval routing, and integration with design tools.

Browser‑based proofing with drag‑and‑drop uploads, comment threads, and customizable review portals.

Visual collaboration board that supports design critique with sticky notes, drawing tools, and threaded discussions.

Feedback widget that captures screenshots, video recordings, and comments directly from stakeholders.

Bug‑tracking overlay that lets reviewers pin feedback on specific UI elements, turning comments into tickets.

In‑page feedback tool that integrates with project management platforms, turning visual comments into actionable tasks.

Video messaging app where designers can record walkthroughs and embed time‑coded comments for asynchronous review.

Hosting service for Axure prototypes that includes comment threads, version history, and stakeholder notifications.

High‑fidelity prototyping platform with a Review mode that captures stakeholder comments and approval status.

Design system‑focused prototyping tool offering interactive reviews, comment threads, and design versioning.

Wireframing service that lets teams share mockups, add comments, and iterate quickly on low‑fidelity designs.

Collaborative prototyping platform with built‑in feedback panels, version control, and design hand‑off.

User‑flow diagramming tool that enables sharing of interactive flowcharts with comment capabilities.

Digital workspace for visual collaboration, supporting design critiques with sticky notes, drawing, and threaded feedback.

All‑in‑one visual tool for wireframes, flowcharts, and sticky notes, offering comment threads on each element.

Media review platform that also supports UI/UX video walkthroughs, time‑coded comments, and version comparison.

Lightweight web app focused on collecting annotated feedback on design screenshots and prototypes.

Proofing tool tailored for design agencies, offering client portals, custom branding, and automated approval workflows.

Simple online proofing service with drag‑and‑drop uploads, comment pins, and email notifications for approvals.

Design review platform that integrates with Figma and Sketch, providing real‑time markup and stakeholder sign‑off.

Collaborative proofing environment for UI assets, featuring pixel‑perfect annotations and version comparison sliders.

Feedback overlay that lets reviewers draw, comment, and record audio notes directly on live web prototypes.

Git‑centric review system that also supports design file attachments, inline comments, and approval pipelines.

Web‑based platform for sharing UI mockups, collecting threaded feedback, and exporting comment reports.