nowfound

Dev tools · May 7, 2025

VizDiff

Hey 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…

VizDiff launched on May 7, 2025 with 110 votes, #426 of 7,905 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

VizDiff automates visual regression by capturing Storybook screenshots in CI, highlighting pixel diffs, and adding GitHub checks before you merge.

VizDiff automates visual regression by capturing Storybook screenshots in CI, highlighting pixel diffs, and posting status checks on your GitLab merge requests or GitHub pull requests before you merge.

Stop tedious manual UI checks. VizDiff automatically captures screenshots of your Storybook components and integrates with GitLab merge requests to prevent visual regressions before they reach production. Ensure UI consistency across changes with minimal effort. Link your GitLab project and upload your first Storybook build. Setup takes minutes. VizDiff captures screenshots automatically on every commit via your GitLab CI pipeline. Visually compare changes and approve or reject with a streamlined user interface. Seamlessly tests components from your existing Storybook setup. Review and approve visual changes directly in your Merge Requests. Clearly highlights visual differences for quick…from vizdiff.io

In the maker’s words, at launch

Hey 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…

Does a similar job

all alternatives →
  • VisualSitemaps2019 · visualsitemaps.com · ▲512

    Autogenerate visual sitemaps in seconds.

  • VD
    Visual diff for 3D printable models2012 · cubehero.com · ▲127
  • Vizzly Visual TestingDec 2025 · vizzly.dev · ▲12

    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…

  • Lost Pixel – open-source visual regression testing for your frontend2022 · github.com · ▲90

    Hey! 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

  • Vizard AgentAug 2026 · agent.vizard.ai · ▲123

    Vizard Agent lets you create polished videos from a link, script, notes, screenshots, or raw clips using AI-driven agents. It turns inputs into styles like explainer videos, ads, trailers, and social clips, and can match visual direction from a single image or Figma file. Browse

  • LP
    Lost 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.

More dev tools this month

the category →
  • /dev/null▲481

    a social network for devs

    Dev tools · 2d ago · dev-null.sh

  • open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

    Dev tools · 27d ago · github.com

  • Contribute to reladraw/reladraw development by creating an account on GitHub.

    Dev tools · 25d ago · github.com

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 22d ago · openbot.run

  • Talanoa▲341

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 20d ago · talanoa.email

  • CoreSpeed▲332

    One MCP for everything your agents need: apps, memory, tools

    Dev tools · 28d ago · corespeed.io

Source: Product Hunt launch ↗ · launch text quoted in part

Launched alongside, May 2025

the whole month →
  • Tapflow 2.0▲1,125

    We built Tapflow for devs, designers, PMs, and tech folks who’ve been sitting on internal docs, templates, and systems — but never productized them. Upload a PDF, notes, or workshop deck, and Tapflow drafts a structured product (with chapters, teaser and pricing plans). It’s good for AI kits, onboarding guides, design systems, and frameworks. You can sell through Stripe, LemonSqueezy, or PayPal. Real-time collaboration is in early beta. No site builder, no LMS — clean design and just focused tools to ship. Fully bootstrapped and just launched on PH today →…

    Work · 2025 · tapflow.ai

  • C9

    Life & fun · 2025 · felixrieseberg.github.io

  • Appwrite 2.0 brings a new engine, a rebuilt Console, five database types, an S3 API, an OAuth 2.1 server, and organization-level Domains and Firewall.

    Dev tools · 2025 · appwrite.io

  • Perfect meeting memory in Notion

    AI · 2025 · notion.com

  • Den▲948

    Multiplayer AI agent builder

    AI · 2025 · getden.io

  • Powerful productivity on the go

    AI · 2025 · raycast.com