Vizzly Visual Testing
Hey HN! I’m Robert. I worked on [Percy’s SDKs/support from 2018–2022.](https://github.com/percy/cli/graphs/contributors) If you ever reached out to support or opened an issue, I probably helped you. Hopefully it was positive :) After a few years away, visual testing still felt stuck, so I'm building Vizzly. The problem: Design handoffs kinda suck. Designers make beautiful specs, devs implement them, then everyone realizes the details got lost somewhere. Current visual testing tools catch broken CSS but miss the real issue - making sure what ships actually…
Vizzly Visual Testing launched on December 30, 2025 with 12 votes, #747 of 11,628 launches that month and more than 75% of that year's launches.
In plain words
Vizzly is a visual testing platform designed for development teams to bridge the gap between design specifications and implementation. It captures actual screenshots across browsers and operating systems, then enables built-in review workflows with features like reviewer assignment, approvals, and mentions. The platform handles any image type, including PDFs, and focuses on ensuring shipped products match designed specifications functionally rather than just catching CSS errors. It's built for designers and developers collaborating on quality assurance during the design handoff process.
written from the facts on this page · September 2026
From the sources
Vizzly is the only visual testing platform with a custom-built diffing engine. Start testing locally with vizzly tdd, no account required. Smart detection handles dynamic content like timestamps, usernames, and IDs without manual masking or frozen fixtures. Works with Playwright, Cypress, Vitest, Storybook, Swift, and more. When you're ready for teams, get position-based comments, @mentions, and sophisticated review workflows.
Catch UI regressions, review changes in pull requests, and give coding agents the screenshots and comments your team already reviewed.
Catch UI regressions before they ship. Give your agent the screenshots your team approved and the comments that explain what changed. $ vizzly context build current \ --source local --agent vizzly · context · build local-workspace COMPLETED @local/vizzly-cli-proof Attention: yes Evidence: 1 of 1 Evidence • checkout-empty-state: changed · 1% diff Your agent should know what you already approved. A fresh screenshot shows your UI today. Vizzly also keeps the approved version and earlier review comments, so you and your agent can see what changed and why it was accepted. Open the diff, read earlier comments, and decide whether the change belongs. Your next agent can read that review before…from vizzly.dev
In the maker’s words, at launch
Hey HN! I’m Robert. I worked on [Percy’s SDKs/support from 2018–2022.](https://github.com/percy/cli/graphs/contributors) If you ever reached out to support or opened an issue, I probably helped you. Hopefully it was positive :) After a few years away, visual testing still felt…
Does a similar job
all alternatives →
VizDiff2025 · vizdiff.io · ▲110Hey HN, I built VizDiff, a streamlined visual regression testing tool specifically designed for Storybook components. I found existing services like Chromatic powerful, but often too feature-heavy or costly for smaller teams and bootstrapped startups. VizDiff simplifies automated screenshot testing—capturing component snapshots in CI, clearly highlighting pixel-level visual changes, and helping teams catch UI regressions before they reach production. My main goal was accessibility and ease of integration for small teams or solo devs who need effective visual testing without the overhead. I'd…
Lost Pixel – open-source visual regression testing for your frontend2022 · github.com · ▲90Hey! My name is Dima, I am from Ukraine and I am the co-founder of Lost Pixel! We built this tool to solve our problems at work and decided to open-source it so more people can build their custom visual regression testing pipelines! If you want to chat about the tool or visual regression testing in general I am super excited to meet like-minded people! Thanks a lot for checking out the product and I hope it will serve you well if you decide to try it out :D
- LPLost Pixel Platform – visual regression testing for your front end2023 · lost-pixel.com · ▲56
Easy to integrate and reliable visual regression testing cloud. Sleep better at night while shipping features.
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