CSS HTML Validator

CSS HTML Validator

AI Internet Solutions LLC
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About

CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.

About

Schema Synth is an AI-powered JSON-LD schema markup tool that generates, validates, and audits structured data. It helps SEO professionals and web developers implement correct schema markup for rich results, AI citations, and knowledge panels — without hand-coding JSON-LD or switching between fragmented tools. Describe your content in natural language and Schema Synth generates schema.org-compliant JSON-LD using AI. It validates against schema.org standards in real time, catches errors before deployment, and audits existing pages for missing or broken markup. Supports all major schema types: FAQ, Product, Article, LocalBusiness, HowTo, Review, Event, Organization, and more. Works with any site — WordPress, Shopify, Webflow, static HTML, React, Vue — no CMS lock-in.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Any person, business, or other entity with a website

Audience

Technical SEO marketers, AEO/GEO specialists, web developers

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$60 (one time)
Free Version
Free Trial

Pricing

$15/month
Free Version
Free Trial

Reviews/Ratings

Overall 4.8 / 5
ease 4.5 / 5
features 4.8 / 5
design 4.8 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

AI Internet Solutions LLC
Founded: 1997
United States
www.htmlvalidator.com

Company Information

Schema Synth
Founded: 2026
Argentina
schemasynth.com

Alternatives

Alternatives

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JSON Schema App

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CodeLobster IDE

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AlgoSEO

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Categories

Categories

SEO

SEO Features

A/B Testing
Artificial Intelligence (AI)
Auditing
Competitor Analysis
Content Management
Dashboard
Google Analytics Integration
Keyword Research Tools
Keyword Tracking
Link Management
Localization
Mobile Search Tracking
Rank Tracking
Revenue Management
User Management

Web Accessibility Testing Features

ADA Compliance
Alerts / Notifications
Automated Testing
Mobile Accessibility Testing
Ongoing Accessibility Monitoring
Reporting / Analytics
Visualize Accessibility
WCAG Compliance

Website Optimization Tools Features

Competitor Analysis
Content Management
Keyword Research Tools
Link Management
Performance Metrics
Problem Area Alerts

Integrations

Clarisco Solutions
EmEditor

Integrations

Clarisco Solutions
EmEditor
Claim CSS HTML Validator and update features and information
Claim CSS HTML Validator and update features and information
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Claim Schema Synth and update features and information