Make Beautiful Frontend Pages
with Hermes
It is not that AI cannot write code—it does not know what "beautiful" means. Use Design Extractor to extract design specs and let Hermes generate visually consistent pages under constraints.
STEP 01
Extract Design Specs
Open a site you love and use Design Extractor to capture colors, fonts, spacing, and motion into a DESIGN.md.
STEP 02
Generate DESIGN.md
Get a structured design document covering atmosphere, design tokens, component specs, and replication guides in 30 seconds.
STEP 03
Let Hermes Follow the Spec
Inject DESIGN.md into Hermes system prompt so the AI generates high-quality frontend code within clear design constraints.
Problem Diagnosis
Without Design Specs, AI Can Only Guess
AI needs a design system like a chef needs a recipe. Without quantified constraints, Hermes defaults to safe but mediocre styles.
Chaotic Colors
Without specs, Hermes tends to use default palettes (blue on white) and cannot recreate the unique color atmosphere of reference sites.
Inconsistent Typography
AI does not know which font to use for headings or what size hierarchy to apply, resulting in pages without visual rhythm.
Random Spacing
Without a spacing system, AI generates arbitrary values like 13px or 27px, making the page look cluttered and unprofessional.
Mismatched Components
Buttons, cards, and inputs each do their own thing with no unified design language. The result feels like a patched-together demo.
Showcase
From Reference Site to Generated Code
Pick a style and see how Design Extractor pulls specs and how Hermes recreates components under those constraints.
SaaS Dark Minimal
Extracted Linear's dark background, indigo glow, precise type hierarchy, and glassmorphism cards. Hermes successfully recreated the premium feel.
Extracted Design Tokens
#0B0B0B → #141414#6366F1 (indigo-500)Cal Sans / Inter14px / line-height 1.5Card 12px / Button 9999pxCapabilities
A Complete Design Spec Covers These
Design Extractor captures visual data across 6 dimensions, producing structured documents that directly guide AI code generation.
Color Palette
Primary / Secondary / Functional (success/warning/error) / Text / Background gradients — a complete color token system.
Font Stack
Heading / Body / Mono fonts / Weight hierarchy (Light/Regular/Medium/Bold) — precise px-level type scale.
Spacing System
Padding / Margin / Gap / Grid baseline — standardized values based on 4px or 8px grids, eliminating arbitrary numbers.
Texture & Depth
Shadow levels / Blur effects / Border styles / Corner radius system / Opacity rules — defining the interface's "touch feel".
Motion Parameters
Transition duration / Animation keyframes / Easing curves (ease-out/cubic-bezier) / Interaction feedback patterns.
Component Specs
Button / Card / Input / Navigation / Typography — complete style definitions and state variants for each component.
Best Practices
3 Tips to Make Hermes Follow Design Specs
How you feed DESIGN.md to Hermes is the key factor that determines generation quality.
Inject Specs into System Prompt
Place core tokens (colors, fonts, spacing) from DESIGN.md into Hermes' system prompt to ensure every output follows the constraints.
Use Component Naming Conventions
Explicitly name components in prompts (e.g., GlassCard, PrimaryButton, EyebrowText) so Hermes maintains the same component system across sessions.
Audit Against DESIGN.md After Each Iteration
Use DESIGN.md as an acceptance checklist after each revision. Verify colors, type sizes, and spacing against the spec to ensure final consistency.
You are a professional frontend developer. Generate React + Tailwind CSS code strictly following this design spec:
[Colors]
- Background: #0B0B0B
- Card: rgba(255,255,255,0.035)
- Primary: #6366F1
- Text: white/90% (primary) / white/60% (secondary)
[Typography]
- Headings: font-serif, text-4xl to text-7xl
- Body: text-sm to text-base, leading-relaxed
- Labels: text-[11px], uppercase, tracking-[0.18em]
[Spacing]
- Base grid: 4px — use 4, 8, 12, 16, 24, 32, 48, 64
- Card padding: p-6 (24px)
- Section spacing: py-24 (96px)
Generate a Hero Section with title, subtitle, and two CTA buttons.Pitfalls
Avoid These Traps to Boost Page Quality by 80%
5 common traps in AI frontend design, and how Design Extractor helps you avoid them at the root.
Letting AI Pick Colors
Use Design Extractor to pull exact color values from reference sites. Force-specify them in prompts so AI cannot "freestyle".
Skipping Type Hierarchy
Extract the reference's font stack and size scale as constraints in your system prompt. Ensure clear distinction between heading/body/label.
Ignoring Spacing Systems
Explicitly require "use a 4px base grid" in prompts, and provide reference padding/margin token values.
Excessive or Missing Motion
Extract the reference's transition duration and easing curves. Require AI to统一 use 150ms + ease-out to avoid flashy animations.
Inconsistent Component Styles
Ask AI to output component specs (complete definitions for Button/Card/Input) before generating pages, ensuring global consistency.
FAQ
Frequently Asked Questions
Hermes is an AI Agent framework focused on task execution and code generation. It does not output Figma or Sketch files directly, but can generate high-quality frontend code under the constraints of a DESIGN.md spec.
Design Extractor supports most publicly accessible websites. As long as the page does not have strong anti-scraping mechanisms, it can extract color, font, spacing, and other visual specs. Some dynamically rendered content may require waiting for the page to fully load before analysis.
Absolutely. That is the core value of this method—you do not need to know design, only how to "extract great design" and "tell AI to execute it." Design Extractor quantifies great design into parameters; Hermes turns parameters back into code.
Yes. DESIGN.md is a Markdown text file. You can paste its contents as a system prompt or conversation context into Hermes. We recommend extracting core tokens (colors, fonts, spacing) first to avoid overly long prompts.
Hermes is an open-source AI Agent framework emphasizing autonomous task execution and multi-platform integration. OpenClaw is also open-source with a focus on Skills. Cursor is an AI-integrated IDE. All three can work with Design Extractor.
Of course. DESIGN.md is a plain text file. You can manually adjust any token (e.g., changing primary color from indigo to emerald) to create variant designs without breaking overall system consistency.
Very much so. DESIGN.md can serve as the team's shared design spec document, ensuring visual consistency across different members and AI sessions. It is like having a tireless design director on the team.
Design Extractor offers a free tier with unlimited analysis using your own API Key. The Pro tier ($5/month) provides platform quota without API Key configuration. All tiers generate DESIGN.md in the same format.
30 Seconds to Make AI Design Beautifully
Install the Design Extractor Chrome extension, pick a website you love, get the full design spec, and let Hermes recreate it for you.