Most design reviews still happen in Figma. You export frames, drop them into a shared file, and wait for comments on spacing, typography, and color. The review is thorough. The work is polished. And none of it is running in a browser.
Figma is the right tool for visual design reviews. It’s fast, collaborative, and precise. But a Figma review can’t tell you if a button state animates correctly, if the layout breaks at 768px, if a form submission clears validation errors the way it should, or if the loading skeleton renders before data arrives. These are the things that make or break a shipped product, and they only exist in real code.
This guide walks through the tools that move design review from static mockups to interactive browser builds, where the feedback actually matches the experience your users will have.
Why Static Reviews Miss Real Problems
A Figma mockup is a snapshot. A real browser is a runtime. The difference shows up in at least five places that static design reviews can’t catch.
Responsiveness. Your Figma design looks perfect at 1440px. The approved mobile variant looks clean at 375px. But nobody reviewed the in-between states at 960px, 820px, or 680px. A flexbox layout that looked intentional at two breakpoints might collapse into something unreadable at a third. The only way to catch this is to resize a real browser window.
Interaction states. Hover, focus, active, disabled, loading, empty, error. Figma supports variants for some of these, but they are hand-crafted snapshots, not system-driven states. A disabled button in Figma looks exactly like the designer drew it. A disabled button in the browser inherits opacity and cursor styles through your CSS cascade. They often don’t match.
Animation and transitions. A side panel that slides in over 200ms, a skeleton loader that pulses, a scroll-triggered reveal. Figma prototypes can approximate these, but they run at a lower frame rate, skip easing curves, and cannot reproduce scroll-linked animations at all. The motion that feels smooth in a prototype often feels different, or broken, in the browser.
Real content and edge cases. Your design uses placeholder text chosen to fit each component. Real user-generated content runs longer, shorter, or contains characters your typeface does not support. Dates overflow the card, names wrap unexpectedly, and embedded media refuses to load. Static reviews with lorem ipsum hide these problems entirely.
Performance under load. A mockup cannot tell you if your hero image blocks the LCP, if your font file adds 200ms to the first paint, or if a client-side data fetch creates a visible flash. These are runtime behaviors that only matter when the page actually renders.
This isn’t an argument against Figma. It’s an argument for adding a second stage to the review process: feedback on the thing that will actually ship.
Tools That Work on Deployed Builds
Once you commit to reviewing in the browser, the next question is which tools to use. A category of visual feedback tools has grown up around this exact need, and three tools define the space for design review.
Pastel
Pastel lets you create canvas-based review pages from live URLs. Reviewers click directly on the rendered page to leave comments pinned to specific screen coordinates. Comments are threaded, resolved, and tracked across revisions. Pastel is built for design teams that want pixel-level feedback without requiring reviewers to install anything.
The catch: Pastel needs a deployed URL. It loads your page into an iframe on its canvas, so it can’t reach http://localhost:3000.
MarkUp.io
MarkUp.io takes a similar approach but leans toward a broader audience. You paste a URL, and MarkUp.io renders it in a review canvas where stakeholders can leave comments and reactions. It integrates with tools like Trello, Asana, and ClickUp so feedback flows into project management. MarkUp.io is particularly useful for agencies that need non-technical clients to leave clear visual feedback without learning a new tool.
Same limitation: it needs a publicly accessible URL. If your build only exists on your machine, MarkUp.io can’t see it.
BugHerd
BugHerd functions as a browser extension that overlays feedback tools directly onto any webpage. Reviewers pin comments to DOM elements, and BugHerd captures the browser, viewport size, and a screenshot with every piece of feedback. It also offers kanban-style task management built into the feedback workflow, so bugs and design notes get tracked alongside code tasks.
BugHerd sits closer to the QA end of the design review spectrum. It is the strongest option for structured bug reporting and feedback tracking on live sites. But like Pastel and MarkUp.io, it requires the page to be accessible on the public internet.
All three tools are effective once your build is deployed. The gap is what happens before that.
Filling the Gap: Reviewing Local Builds
Every design review process has a messy early phase. The build is halfway done. The interactions are wired up but the data is mock. You want feedback now, before you commit the approach, before you polish the details, before you push to a branch that sets off a CI/CD pipeline.
Deploying unfinished code to staging just to get a visual gut check is expensive. You burn five to ten minutes on CI/CD. You clutter the staging environment with half-baked features. And you still have no idea whether the reviewer actually opened the link.
This is where WireMaven fits into the design review stack. It gives your local dev server a temporary encrypted public URL so anyone with the link can interact with your running build. No deployment, no staging environment, no account.
Here’s what that looks like in practice:
You’re a designer who also writes code, or a frontend developer working from a Figma file. You have the layout built, the components wired up, and the responsive styles applied. You want your design lead to review the real thing before you refine the details.
You keep your dev server running and start WireMaven:
npm run dev
npx wiremaven initWireMaven generates a temporary URL and opens a floating overlay in your browser. The overlay shows viewer activity, request outcomes, and errors in real time. You send the URL to your design lead.
When they open the link, the overlay fires a viewer-connected event. You see them arrive. They resize their browser to check tablet breakpoints, and you see each asset request complete. They click through the interaction flow, and you watch the event log scroll. If a route throws a 500 or an image fails to load, the overlay flags it before they type a single comment.
This changes the dynamic of a design review. Instead of getting an email hours later saying “the spacing looked off on mobile but I cannot remember which page,” you catch the issue in the moment and fix it while your dev server is still hot.
WireMaven doesn’t replace annotation tools. It solves the URL problem they can’t. If your team already uses Pastel, MarkUp.io, or BugHerd, you can paste the WireMaven URL into any of them and run your standard review workflow on a build that has never left your machine. We covered the mechanics of this combined approach in our localhost sharing for agencies guide.
WireMaven supports the frameworks you already use: Next.js, Astro, Vite, Webpack, and Rspack. Each session auto-expires after 15, 30, or 60 minutes. No lingering links, no cleanup, no security concern around an old build staying live.
A Complete Design Review Stack
A single tool cannot cover every stage of design review. Different moments in the process demand different tools. Here is a complete stack that moves from concept to sign-off without gaps.
Figma for visual design. This is where it starts. Wireframes, high-fidelity mockups, design system work, and typography decisions happen here. Figma gets everyone aligned on the visual direction before code is written. The collaboration is fast, the feedback is visual, and the iteration is in hours, not days.
WireMaven for local prototype review. Once the design is translated to code, the review moves to the browser. WireMaven gives your local build a public URL so design stakeholders can interact with the real thing while the code is still in progress. You get session visibility, error awareness, and a feedback loop measured in minutes instead of days. For a step-by-step guide on running these sessions, read our walkthrough on sharing localhost with a client.
Staging for integration testing. When the feature is code-complete and needs to be tested against real APIs, shared databases, and production-like infrastructure, it moves to staging. At this point the question is not visual. It is functional: does it work end-to-end.
BugHerd for final QA and sign-off. The last stage is a structured review with threaded feedback, task tracking, and approval workflows. BugHerd runs on the staging or production URL and gives QA testers and client stakeholders the tools they need for formal sign-off. Every comment is pinned to a DOM element with full context.
This stack covers the full lifecycle. Figma handles static design. WireMaven handles early interactive review without deployment overhead. Staging handles integration testing. BugHerd handles structured final review. No stage is skipped, and no tool gets asked to do something it wasn’t built for.
If you want more detail on running confident design walkthroughs directly from your dev environment, we have a dedicated guide on confident client walkthroughs from localhost.
Design Review Belongs in the Browser
Figma’s not going anywhere, and it shouldn’t. It’s the best tool for visual design, bar none. But design review shouldn’t stop at the mockup. The browser is where real users experience your product, and it is where design feedback needs to happen.
Moving review to the browser doesn’t mean abandoning the tools your design team already uses. It means adding a stage where the build, not the mockup, is the artifact under review. WireMaven removes the deployment overhead that makes browser-based design review feel impractical in the early stages of a project.
npm install -D wiremavenRun your next design review on the real build. Not the mockup.