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A framework which actually cares about Core Web Vitals & SEO

Diode JS is a server-side rendering framework designed to deliver exceptional Core Web Vitals, search engine visibility, and lightning-fast user experiences—without requiring developers to manually optimize every page.

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  • Zero plugin maze
  • SEO-ready HTML
  • Smart defaults

One intelligent render pipeline

CSS
Critical styles first
JS
Only what the viewport needs
HTML
Complete on arrival
SEO
Structured by default
A futuristic rendering engine connecting a browser interface to performance and SEO charts

Every millisecond has an owner.

Diode handles the performance work that is too important to leave until the end.

  • Automatic critical CSS

    Automatically detects and inlines above-the-fold CSS to eliminate render-blocking styles.

  • Automatic critical JavaScript

    Only ships the JavaScript required for the initial viewport, delaying everything else.

  • Lazy loading images

    Images below the fold are automatically lazy loaded to improve LCP and reduce bandwidth.

  • Server side rendering

    Generate fully rendered HTML for maximum SEO and faster initial page loads.

  • SEO first

    Optimized HTML output with proper metadata, semantic structure, and search engine friendliness.

  • Better Core Web Vitals

    Engineered to improve Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift.

Write the page. Diode finds the fast path.

Run the demo to watch Diode identify the critical viewport, reduce the initial payload, and produce search-ready HTML automatically.

Diode OptimizerPipeline walkthrough

page.jsx
import { Image } from 'diode/image';import { ProductCard } from './ui'; export default function Store() {  return (    <main>      <h1>Performance by default.</h1>      <Image src="/hero.jpg" priority />      <ProductCard lazy />    </main>  );}
diode.config.js
import { defineConfig } from 'diode'; export default defineConfig({  rendering: 'server',  criticalCss: true,  criticalJs: true,  images: { belowFold: true },  seo: { semanticHtml: true }});
output.html
<!doctype html><html lang="en">  <head>    <style data-critical>…</style>    <meta name="description" … />  </head>  <body>    <main><!-- rendered content --></main>    <script type="module" defer>…</script>  </body></html>

Optimization pipelineReady

Critical CSS
Waiting
Initial JavaScript
Waiting
Below-fold media
Waiting
Semantic HTML
Waiting
  • Built-in performance optimization
  • Unified intelligent render pipeline
  • Automatic route-by-route analysis

Performance should be a property of the system.

Instead of making developers install dozens of optimization plugins and manually configure performance, Diode JS includes intelligent optimizations by default.

Fast is the starting point.

Clean output. Smaller payloads. Stable pages.

  • Automatic optimizations

    Diode makes performance decisions as it analyzes each page.

  • Minimal configuration

    Sensible defaults replace a maze of plugins and tuning flags.

  • SEO-first rendering

    Complete, semantic HTML arrives ready for people and crawlers.

  • Production-ready defaults

    The fast path is the default path—from first build to every deploy.

Less configuration. More velocity.

A rendering framework designed around performance—not patched for it later.

Diode JS compared with a typical SSR framework
FeatureDiode JSTypical SSR framework
Automatic critical CSSIncludedManual
Automatic critical JSIncludedNot included
Lazy load below-fold imagesIncludedUsually manual
SEO optimized renderingBuilt inBasic
Core Web Vitals focusEnd-to-endPartial
Performance configurationMinimalOften required

Optimize for outcomes you can feel.

One screen. Every signal in the green. Diode keeps the entire loading and interaction path in view.

Optimization coverage

Largest Contentful Paint (LCP)
Priority
Interaction to Next Paint (INP)
Protected
Total Blocking Time (TBT)
Unblocked
Cumulative Layout Shift (CLS)
Stable
First Contentful Paint (FCP)
Immediate
Speed Index (SI)
Lean

Handled by the Diode pipeline

From your code to a faster page.

Diode analyzes, prioritizes, optimizes, and renders—before the page ever reaches a user.

  1. 01

    Write code

    Build the experience

  2. 02

    Page analyzed

    Diode maps the critical path

  3. 03

    Critical CSS

    Above-the-fold styles extracted

  4. 04

    Critical JS

    Initial interactions prioritized

  5. 05

    Images optimized

    Below-fold assets deferred

  6. 06

    HTML rendered

    Complete markup generated

  7. 07

    Page delivered

    Fast for users and crawlers

Keep performance work out of the backlog.

Diode turns recurring optimization work into framework behavior your team can rely on across every route.

  • Less performance debt

    Critical rendering decisions happen as each page is prepared, instead of becoming a cleanup project after launch.

  • A cleaner delivery workflow

    One integrated optimization path replaces a patchwork of unrelated plugins, flags, and manual performance checks.

  • Search-ready foundations

    Rendered HTML, semantic structure, and metadata handling remain part of the baseline rather than optional finishing work.

Build websites that search engines and users love.

Stop fighting performance problems manually. Let Diode JS optimize your pages automatically so you can focus on building great products.