Products

ValidateHTML

Uses AI

Validate HTML Online Instantly

validatehtml.com Software Development / Testing & Code Quality

AI Benchmark
Desktop
Mobile
Monthly visits
12.7K
Up124.4%MoMSep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
$6.48/mo
Lower than 89% of peersNiche median $20/mo
Creators
Théo
No social account linked
Launched
8mo ago
2026-03-24 · Est.

Traffic

Last 12 months
Monthly visitsData through Sep 2026 · Oct 2026 pending
Events1 marketing move

Marketing moves

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

    Free HTML, CSS, JSON & XML validator with quality scores

    Mar 24 · 8mo agoLaunch page

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct35%
  • Organic Search26%
  • Referrals19%
  • Social7%
  • Other13%

Countries

  • United States39%
  • India12%
  • Brazil10%
  • Vietnam9%
  • France8%

Search

Domain authority —Domain registered 2007-09-13

KeywordMonthly volume
html validator13K
html checker5,070
valid html checker170
html anatomi checker150
valiodate html snippet140

Traffic data: Vaneform

Pricing

Solo
49 EUR / month
1 site watched · 200 fixes · 5,000 API calls a month
Agency
149 EUR / month
10 sites watched · 1,000 fixes · 20,000 API calls a month
Full site report
49 EUR once
Every page of one website, once.
Automatic fixes
6 EUR for 25 fixes
25 fixes

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

Entry price $6.48/mo, Lower than 89% of peers; “Testing & Code Quality” median is $20/mo.View pricing benchmark

Pages & changes

Tracked since 2026-03-24

Key pages

Weekly snapshots
validatehtml.com/ Snapshot 2026-11-04

Changes

No pricing, plan, or positioning changes detected since tracking started.

Design

First-screen visual analysis & :root CSS

Dark Developer (Dark canvas, balanced density) featuring centered headline + input layout and interactive hero demo / tool visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Validate HTML Online Instantly”

Centered Headline + Input hero structure paired with direct input / instant try CTA and no explicit trust bar.

Conversion path: Centered Headline + Input + Interactive Hero Demo / Tool → Direct Input / Instant Try

Palette · click to copy

5-D design score7.9 / 10
Typography
8.0
Color & Contrast
8.0
Layout & Spacing
8.0
Craft & Polish
8.0
Distinctiveness
7.0

Structure

Fonts
Geist Mono / Inter
Primary visual
Interactive Hero Demo / Tool
Social proof
No Explicit Trust Bar
Navigation
Full-Width Top Bar
Theme & density
Dark · Balanced
Corners & depth
Medium Radius · Hairline borders
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Dark Developer

Deep dark surfaces, monospace typography, terminal/code snippets, and high-precision borders.

## Design Tokens

```css
:root {
  --background: #0b0d12;
  --surface: #161a23;
  --foreground: #e6e9ef;
  --muted-foreground: #9299a8;
  --accent: #08c995;
  --radius: 8px;
  --font-heading: "Geist Mono", ui-monospace, monospace;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, monospace;
}
```

Color area ratio: Background #0B0D12 (~70%) · Surface #161A23 (~18%) · Text #E6E9EF (~5%) · Muted Text #9299A8 (~5%) · Accent #08C995 (~2%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Centered Headline + Input
- Navigation: Full-Width Top Bar
- Theme & density: Dark · Balanced
- Border radius & elevation: Medium Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Interactive Hero Demo / Tool
- Conversion CTA: Direct Input / Instant Try
- Headline hook: Outcome & Speed Promise
- Hero components: Centered Prompt / Input, Interactive Hero Tool, Code & Terminal
- Spatial layout notes: Centered Headline + Input hero structure paired with direct input / instant try CTA and no explicit trust bar.
- Visual summary: Dark Developer (Dark canvas, balanced density) featuring centered headline + input layout and interactive hero demo / tool visuals.

## Avoid

- Warm pastel backgrounds
- Playful cartoon illustrations
- Oversized pill buttons everywhere

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 ValidateHTML cost?
Solo: 49 EUR / month; Agency: 149 EUR / month; Full site report: 49 EUR once; Automatic fixes: 6 EUR for 25 fixes. Observed 2026-11-04. Check the source for current billing terms, usage limits and taxes.Source
How much website traffic does ValidateHTML get?
Vaneform estimates 12.7K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is ValidateHTML and what platforms does it support?
ValidateHTML is catalogued under Testing & Code Quality: Validate HTML Online Instantly. Supported platforms: API.

Related products in this category

Software Development / Testing & Code Quality

These products share a catalog category. Compare customer tasks, features and deployment requirements before treating them as alternatives.