Does HTML_META_CHARSET_FIRST affect my score?

Yes. It is an importance 6 rule at SPECIFICATION confidence, so a failure costs 6 × 1 points of impact in the HTML category before that category is normalised to 100.

What does SPECIFICATION confidence mean?

A standard says so: HTML, WCAG, an RFC or Google's own documentation. Confidence is a declared tier rather than a per-rule number, so every rule backed by the same class of evidence carries the same weight - which is what makes the score reproducible instead of hand-tuned.

How do I check HTML_META_CHARSET_FIRST on my own site?

Paste your URL into the box above and it runs only this rule, usually in a couple of seconds. It is also included in the HTML checker and in a full scan.

HTMLHigh Affects your score

Document declares a character encoding

HTML_META_CHARSET_FIRST

Without a declared encoding the browser guesses, and a wrong guess renders every non-ASCII character as mojibake. The declaration must also appear in the first 1024 bytes, which is why it belongs at the top of head.

Free, no signupNo account, no card
No AI in the score986 deterministic rules
Nothing publishedYour scans stay yours
Answers in secondsQuick scan, no browser

How this rule is weighted

Importance: 6 / 10; How much this matters relative to other rules.
Confidence: SPECIFICATION; A standard says so: HTML, WCAG, an RFC or Google's own documentation.
Severity: error; How the finding is presented when it fails.
Scoring: Counts; A failure costs points in its category.

Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.

Questions about this rule

Does HTML_META_CHARSET_FIRST affect my score?: Yes. It is an importance 6 rule at SPECIFICATION confidence, so a failure costs 6 × 1 points of impact in the HTML category before that category is normalised to 100.
What does SPECIFICATION confidence mean?: A standard says so: HTML, WCAG, an RFC or Google's own documentation. Confidence is a declared tier rather than a per-rule number, so every rule backed by the same class of evidence carries the same weight - which is what makes the score reproducible instead of hand-tuned.
How do I check HTML_META_CHARSET_FIRST on my own site?: Paste your URL into the box above and it runs only this rule, usually in a couple of seconds. It is also included in the HTML checker and in a full scan.

Related HTML rules

Run the HTML checker All 986 rules

Document declares a character encoding

How this rule is weighted

Questions about this rule

Tags

Related HTML rules

Document declares a character encoding

How this rule is weighted

Questions about this rule

Tags

Related HTML rules