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Validators - Checking the site for errors

Hello webmaster! I offer you lists of tools for professional website creation. These are validators, linkers, programs, managers and other services that will help you build a professional website with clean and competent code.

List of validators

Checking your site for errors

  1. W3C MarkUp Validation Service
    Online HTML and XHTML validator.
  2. Validome
    Online HTML, XHTML, and XML validator.
  3. A Real Validator
    HTML validator for Windows; offline version of WDG HTML Validator .
    Check for errors in the HTML code.
  5. XML schema validator
    Validate XHTML 1.0 XML schema documents, with the detection of errors not found by other validators.
  6. SP
    James Clark's multi-platform SGML parser which contains the SGML validator nsgmls.
    Dave Raggett's free cross-platform utilities for cleaning HTML.
  8. BBEdit
    Validation and HTML editor for Macintosh and also contains an HTML validator.
  9. Web Page Backward Compatibility Viewer
    Allows site creators to see pages through tag filters, which allows you to identify vulnerabilities and errors and achieve cross-browser compatibility.
  10. Web Page Purifier
    Allows authors to see the page "cleared" and adjusted for HTML 2.0, HTML 2.0 + Tables, HTML 3.2, or webtv 1.1
  11. Watchfire WebXACT
    Checking the availability of HTML
  12. W3C CSS Validation Service
    Free, easy-to-use CSS validator.
  13. W3C Link Checker
    Checking the efficiency of the links.
  14. LinkAlarm
    Fee-based service that regularly checks a site's links and sends a report by e-mail.
  15. NetMechanic
    Connects, tests and verifies HTML links and sends an e-mail message.
  16. HTML PowerTools
    Windows offline program checking links and containing a quasi-validator.
  17. Watchfire WebQA
    Checking links and site control for Windows.
  18. MOMspider
    Perl-based link checking and analyzer for Unix.
  19. CyberSpyder Link Test
    Program for Windows checking hyperlinks.
  20. LinkScan
    Server-based verification of hyperlinks for UNIX and Windows NT.
  21. Robots.txt Checker
    Online robots.txt syntax check
  22. Web Link Validator
    The validator of hyperlinks for Windows.
  23. Open Directory HTML Validators and Debuggers
    List of different validators.

A variety of site checks for errors, tests and validators.

Availability check - Accessibility

Checking the entire site - General

Validation in different browsers and HTML versions

Rights check - Legislation

Link Checking - Linking

Load Time Test

Position in search engines - SEO

The validity of the site - Validation

Miscellaneous Checks - Miscellaneous

Statistics of query words on search engines