Audisto Crawler Hints
Content Quality Analyzer Technical SEO & Accessibility Tool
What is the content checker for
Ensure Content Accessibility: Detect issues with heading structure, image alt attributes, and language declarations that affect content usability and compliance.
Optimize Meta Information: Find and fix problems with titles, meta descriptions, and character encoding that impact search result appearance and content interpretation.
Maintain Clean Markup: Identify issues with non-printable characters, BOMs, and special character encoding that could affect content display.
Monitor Content Quality: Track technical content issues across your website to maintain consistent standards and prevent SEO regressions.
How to check content issues at scale
Quality content needs clean code
Technical content quality is crucial for both SEO and accessibility. Our analysis helps you maintain clean and effective content implementation. While our quick check provides immediate content insights for single pages, our full crawler ensures consistent content quality across your entire website.
Critical Content related hints
<html> contains too many uncommon non-printable characters
The HTML documents contains too many uncommon non-printable characters, and not all of them will be shown in live analysis.Learn more
<html> contains uncommon non-printable characters
If uncommon non-printable characters are detected, the URL of the document containing the character is flagged.Learn more
<html> starts with BOM
There is a unicode byte order mark (BOM) at the top of the HTML.Learn more
<img> has no alt attribute
If an image without an alt attribute is found, the URL is flagged with this hint.Learn more<meta description> occurs more than once
If a meta description is found more than once in the HTML, the URL is flagged with this hint.Learn more<title> found outside <head>
A <title> tag was placed outside the <head> section, where it may have no effect.Learn more<title> missing or empty
If the <title> tag is missing, the URL is flagged with this hint.Learn more<title> occurs more than once
If the <title> tag is found more than once, the URL is flagged with this hint.Learn moreCharset: Charset set in HTTP Content-Type header and document differ
Both the document and the HTTP Content-Type header specify a charset, but these are not identical.Learn moreCharset: Invalid charset in Document
This hint identifies all HTML documents where the charset declaration in the HTML document specifies an invalid charset.Learn moreCharset: Not set
There is no charset set, neither in the Content-Type HTTP header, nor in the document, e.g. through a <meta> tag.Learn moreLanguage: Content-Language http-equiv meta element found
A Content-Language declaration was found as http-equiv meta elementLearn moreLanguage: Invalid
Language found does follow some basic rules for language tags.Learn moreLanguage: Set multiple times and differs
The document language was set multiple times and differs.Learn more
Problem indicating Content related hints
<h1> and <h2> not found
If no h1 and h2 headings are found, the URL is flagged with this hint.Learn more<h1> not found
If the HTML does not have an h1 heading, the URL is flagged with this hint.Learn more<h1> occurs more than once
If more than one <h1> tag is found, the URL is flagged with this hint.Learn more<html> contains unencoded Left-To-Right-Mark or Right-To-Left-Mark
A Left-To-Right or Right-To-Left-Mark was found, but it is not encoded as HTML entity.Learn more<html> contains unencoded joiner chars
A zero-width joiner or zero-width non-joiner was found, but it is not encoded as HTML entity.Learn more<meta description> missing or empty
If the meta description is missing or empty, the URL is flagged with this hint.Learn more<meta description> too long for Google snippet
If the meta description is too long to be displayed in search result snippets, the URL is flagged with this hint.Learn more<title> short or single word
If the title of a document has less than 10 characters or if it is only a single word, the URL is flagged with this hint.Learn more<title> too long for Google snippet
If the title of a document is too long to be displayed in search result snippets, the URL is flagged with this hint.Learn moreLanguage: Not set on document
No proper language definition was found for the HTML document.Learn more
Informational Content related hints
<h1>-<h6> chain broken
If the HTML contains a broken <h1>-<h6> chain, the URL is flagged with this hint.Learn more<html> contains unencoded soft hyphen (SHY)
A soft hyphen was found, but it is not encoded as HTML entity.Learn more<html> is more than 100 KiB in size
If a document is more than 100 KiB in size, the URL is flagged with this hint.Learn more<img> alt attribute exists but empty
If an image with an empty alt attribute is found, the URL is flagged with this hint.Learn more<meta language> found
<meta name=language> was found. Use the lang-attribute in the <html> tag instead.Learn more