HTML Validator is a free online developer tool to validate HTML code against the W3C standards as known as HTML linter instantly. Supports partial HTML code validation.
You can either browse an HTML file, fetch HTML code from a URL, or paste HTML code manually, and then click the validate button. The results will be displayed accordingly when the process is done.
Basically, there are two types of result messages: warning and error
Warning — A suggestion to fix your HTML code. For instance, an HTML attribute that can be omitted.
Error — An error in your HTML code that’s against the W3C standards. You’re encouraged to fix it.
Each message comes with a line number and excerpt code indicating where a warning or an error is located.
Optionally, you can partially validate HTML code by enabling the fragment option so that the HTML code will be treated as part of an HTML document instead of a full one.
Check the syntax and grammar in the HTML source code, and displays errors and warnings with the number of lines.
Useful Functions
- Click the link which is indicating the row and column where the error occurred, then jump to the corresponding source code.
- If you check ‘Show image’, you can filter the displayed image with the following three options.
・ Show images without alt attribute
・ Show image with alt attribute blank
・ Show images with alt attribute - Click ‘Group’ to group similar errors into one group.
Loading…
Текст успешно скопирован!
Предварительная валидация
Онлайн HTML валидатор (HTML validator) является сервисом, который бесплатно анализирует html код web страниц на наличие ошибок. Валидатор HTML проводит верификацию согласно существующим стандартам. Большинство сайтов написаны с использованием языков разметки HTML5 или XHTML. Они должны содержать правильную разметку, которая обеспечит высокое качество веб-страниц, их быструю и полную индексацию. W3C валидатор HTML поможет вам найти отсутствующие или некорректные теги HTML в ваших документах. Валидация HTML является одним из основных факторов, влияющих на качество поисковой индексации в Яндекс и Google. W3C validator делает полный отчет по ошибкам в HTML коде. Он выполняет анализ сайта для оценки качества разметки в соответствии с действующими стандартами. Помогая вам проверить валидность кода HTML, выявить и исправить ошибки.
Validates HTML files for compliance against the W3C standards and performs linting to assess code quality against best practices.
Find missing or unbalanced HTML tags in your documents, stray characters, duplicate IDs, missing or invalid attributes and other recommendations.
Supports HTML5, SVG 1.1, MathML 3.0, ITS 2.0, RDFa Lite 1.1. Implementation is based on Validator.Nu.
Copied to Clipboard
HTML Validator Online is easy to Validate HTML. Copy, Paste and Validate. This is also called as HTML Lint tool.
- Supports w3c html validator.
- Shows errors with line numbers and very easy to correct HTML code.
Know more about HTML:
- HTML Space
Best and Secure Online HTML Validator works well in Windows, Mac, Linux, Chrome, Firefox, Safari and Edge.
Why HTML VAlidator?
HTML Validator is easy to use HTML Validator tool. Copy, Paste and Validate. This is also called as HTML Lint tool.
Is login required to save HTML data?
No. It’s not required to save and share code. If HTML data is saved without login, it will become public. To make HTML data private please login and save the links.