Shahar Ben Sidi

Designer's Little Helper - 12 professional browser design tools in one extension

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Grid overlays, pixel-perfect measurements, WCAG contrast checker, layout inspector, and 8 more professional tools. Built for designers and developers who care about pixel-perfect web design. Zero performance impact. Free forever.

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Shahar Ben Sidi

👋 Hey Product Hunt!

I'm Shahar, a product designer with over a decade of experience working across companies, startups, and freelance projects.

Why I Built This

Throughout my career, I kept running into the same challenge.

The gap between design and development.

Not the conceptual gap. The practical, everyday one.

A designer checks their mockup: "16px padding."
They open the live site: it's 18px.
But verifying that requires opening DevTools, finding the element, reading computed styles.

Or an accessibility audit. WCAG compliance checking means digging through technical panels that weren't built with designers in mind.

I saw this pattern repeat:

  • Designers couldn't quickly verify implementation

  • Developers needed constant clarification

  • Simple checks required technical knowledge

  • Time lost on preventable miscommunication

The Real Problem

The tools exist in DevTools. But they're built for a developer workflow.

They require technical knowledge to navigate.
They interrupt the page layout while you're trying to inspect it.
Some capabilities - like visual grid overlays with design system presets - simply don't exist.

What if these tools were accessible to everyone on the team?

What I Built

Designer's Little Helper brings those capabilities to the surface:

12 tools that float above the page - never disrupting the layout
No technical knowledge required - visual language designers understand
Hide the UI when needed - without closing the tool

It's not about replacing DevTools. It's about making these capabilities accessible to everyone.

The Tools:

Design Precision:

  • Grid Overlay - alignment without guesswork

  • Mark & Measure - precise spacing verification

  • Ruler & Guides - pixel-perfect positioning

Layout Analysis:

  • Layout Inspector - understand Flexbox and Grid visually

  • CSS Inspector - see computed styles simply

  • Type X-Ray - typography at a glance

  • State Visualizer - see CSS states clearly

Accessibility:

  • Vision Simulator - 8 types of color blindness

  • Contrast Inspector - WCAG 2.2 compliance made simple

Workflow:

  • Responsive Tester - 20+ device presets

  • Color Picker - with harmonies

  • Edit Text - quick content prototyping

Why It Matters

Better communication between designers and developers means:

  • Less back-and-forth

  • Fewer implementation mistakes

  • More time actually building

  • Better products

That's the bridge I'm trying to build.

What I'd Love From You

Honest feedback:

  • Does this solve a real problem for you?

  • What's missing?

  • What would make this a daily tool?

If you're a designer or developer who's felt this friction - I'd love to hear your story.

And if you find this useful, an upvote would mean a lot 🙏

I'll be here all day answering questions.

Links:
🌐 Website: https://srefine.com/DLH/
🎥 Demo: https://youtu.be/cPBRw8qlbyA
💾 Chrome Store: https://chromewebstore.google.com/detail/gnmejhainjnfgfoehbdnacflcodpfpbg

Thanks for checking this out.