Products

Rocket Validator

Uses AIMCPSkill

Lightning-fast web validation for large websites

rocketvalidator.com Chrome Web StoreSoftware Development / Testing & Code Quality

AI Benchmark
Desktop
Mobile
Monthly visits
15.6K
Up34.3%MoMSep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
$5.4/mo
Lower than 91% of peersNiche median $20/mo
Creators
Jaime Iniesta
@jaimeiniesta· 1,368 followers
Launched
10y ago
2016-08-17 · Est.

Traffic

Monthly visitsData through Sep 2026 · Oct 2026 pending
Events9 changes · 1 marketing move

Marketing moves

Launches, search & content, referrals, promotions
  • Launched on Product HuntLaunch

    accessibility, a11y, contrast, design tools

    May 5 · 6mo agoLaunch page

  • Launched on Product HuntLaunch

    Official API to integrate report data in your projects

    May 6, 2020 · 6y agoLaunch page

  • Launched on Show HN (6 pts · 1 comments)Launch

    Rocket Validator, automated site-wide HTML validation for large sites

    Nov 15, 2016 · 10y agoLaunch page

  • Launched on Product HuntLaunch

    Site-wide Accessibility Scanner for large sites

    Aug 17, 2016 · 10y agoLaunch page

MCP Server & Agent Ecosystem

GitHub · MCP / Skill

Store data

Chrome Web Store
Rocket Validator HTML Guides

Adds links to HTML validation guides next to each issue in the W3C Validator and validator.nu.

Update date not synced
Rating
★ 5.004 ratings
New ratings last mo
—
Price & IAP
FreeIAP data not synced
Users
18Public store figure

Adds quick-access links to HTML validation guides and curated references next to each issue in the W3C Validator and validator.nu. HTML issues returned by the W3C Validator can be a bit cryptic, as they lack a help guide explaining the nature of the issues and how to fix them. This extension enriches each reported issue with helpful links: - Rocket Validator HTML Guides — direct match on the extensive Rocket Validator guides library, which also references MDN, the HTML Spec, W3C, web.dev, Can I Use and other authoritative sources. - Search engines — one-click lookup of the issue on the major search engines. - AI assistants — ask ChatGPT or Mistral to explain the issue or suggest a fix. No setup or registration needed to use this free extension.

Store assets, rating histograms, install tiers, and screenshots are synced from Apple App Store, Google Play, and Chrome Web Store.

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct40%
  • Organic Search33%
  • Referrals11%
  • Social6%
  • Other10%

Countries

  • Germany61%
  • United States8%
  • Netherlands8%
  • France6%
  • India6%

Search

Domain authority —Domain registered 2015-11-27

KeywordMonthly volume
end tag strong violates nesting rules.110
stray start tag “head”110
the character encoding was not declared. proceeding using windows-1252.90
find missing semicolon in css90
unexpected unknown value "bold" for property "font-style" (declaration-property-value-no-unknown)—

Traffic data: Vaneform

Pricing

1K Weekly
€5 / week
1,000 credits a month · 1 guest account
1K
€9/month
1,000 credits a month
10K
€29/month
10,000 credits a month · 3 guest accounts

Trial: None · Observed 2026-11-04 · Pricing page

Entry price $5.4/mo, Lower than 91% of peers; “Testing & Code Quality” median is $20/mo.View pricing benchmark

Pages & changes

Tracked since 2016-08-17

Key pages

Weekly snapshots

Changes

  1. Nov 1 · 13d ago

    Homepage headline (H1) changed to “Automated accessibility testing for busy developers”Positioning

    Digital accessibility monitoring for busy developers→Automated accessibility testing for busy developers

  2. Nov 1 · 13d ago

    Adopted technology: Fly.ioFeatures

    —→Fly.io

  3. Nov 1 · 13d ago

    Removed technology: Google Font APIFeatures

    Google Font API→—

  4. Nov 1 · 13d ago

    Removed technology: Google Hosted LibrariesFeatures

    Google Hosted Libraries→—

  5. Nov 1 · 13d ago

    Removed technology: Lemon SqueezyFeatures

    Lemon Squeezy→—

  6. Nov 1 · 13d ago

    Adopted technology: Priority HintsFeatures

    —→Priority Hints

Design

First-screen visual analysis & :root CSS

Soft & Friendly (Light canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Lightning-fast web validation for large websites”

Split Copy & Visual hero structure paired with start free / sign up CTA and customer / press logo strip.

Conversion path: Split Copy & Visual + Product UI Screenshot / Component → Start Free / Sign Up · Trust bar: Customer / Press Logo Strip

Palette · click to copy

5-D design score7.7 / 10
Typography
8.0
Color & Contrast
8.0
Layout & Spacing
8.0
Craft & Polish
8.0
Distinctiveness
6.0

Structure

Fonts
Inter
Primary visual
Product UI Screenshot / Component
Conversion CTA
Start Free / Sign Up
Social proof
Customer / Press Logo Strip
Navigation
Full-Width Top Bar
Theme & density
Light · Balanced
Corners & depth
Medium Radius · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Soft & Friendly (with Enterprise Clean)

Warm low-saturation pastels, generous rounded corners, and approachable illustrations.

## Design Tokens

```css
:root {
  --background: #ffffff;
  --surface: #f5f6f4;
  --foreground: #171717;
  --muted-foreground: #777777;
  --accent: #078f19;
  --radius: 8px;
  --font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #FFFFFF (~77%) · Surface #F5F6F4 (~6%) · Text #171717 (~9%) · Muted Text #777777 (~4%) · Accent #078F19 (~4%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Split Copy & Visual
- Navigation: Full-Width Top Bar
- Theme & density: Light · Balanced
- Border radius & elevation: Medium Radius; use elevation shadows to separate layers
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Start Free / Sign Up · Trust bar uses Customer / Press Logo Strip
- Headline hook: Outcome & Speed Promise
- Hero components: Large Hero Product Shot, Customer Logo Wall
- Spatial layout notes: Split Copy & Visual hero structure paired with start free / sign up CTA and customer / press logo strip.
- Visual summary: Soft & Friendly (Light canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.

## Avoid

- Harsh pure-black backgrounds
- Sharp 0px corners
- Cold technical jargon in hero copy

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.

Questions & evidence

How much does Rocket Validator cost?
1K Weekly: €5 / week; 1K: €9/month; 10K: €29/month. Observed 2026-11-04. Check the source for current billing terms, usage limits and taxes.Source
How much website traffic does Rocket Validator get?
Vaneform estimates 15.6K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is Rocket Validator and what platforms does it support?
Rocket Validator is catalogued under Testing & Code Quality: Lightning-fast web validation for large websites. Supported platforms: Browser Extension, MCP Server.

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