Open Graph Parser

Extract og metadata entries from HTML source in document order, preserving repeated keys.

Description

Open Graph meta fields describe a resource for social previews.

Open Graph meta fields describe a resource for social previews. Repeated keys can represent multiple images or conflicting source declarations and are therefore retained.^[1]

Extract og metadata entries from HTML source in document order, preserving repeated keys.

When to use Open Graph Parser

Use this tool to extract og metadata entries from HTML source in document order, preserving repeated keys.

Choose the URL, decoded source text, header value or explicit byte list requested by this tool. Paste the complete relevant input and follow its parsing and encoding conventions.

How to use Open Graph Parser and understand its results

Choose the URL, decoded source text, header value or explicit byte list requested by this tool. Paste the complete relevant input and follow its parsing and encoding conventions.
Enter html using the field table and calculation rules, then run the tool.
Read entries. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
html	HTML source.	string; maximum length: 1000000	Required

Paste HTML. For each scanned meta start tag choose property before name before http-equiv, require a content attribute and test the case-sensitive og: prefix. Decode supported numeric/common named references and return ordered key/content pairs, including repeats.

entries=source-order meta key/content pairs whose raw selected key starts with 'og:'

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
entries	Metadata keys and decoded content values.	list of object; minimum entries: 0; maximum entries: 100000

json

{
  "input": {
    "html": "<meta name=\"description\" content=\"A &amp; B\"><meta property=\"og:title\" content=\"Example\"><meta name=\"twitter:card\" content=\"summary\">"
  },
  "output": {
    "entries": [
      {
        "key": "og:title",
        "content": "Example"
      }
    ]
  }
}

Limitations and assumptions

This does not validate required Open Graph fields, resolve image URLs or build a rendered preview. Only a limited entity set is decoded, and script-generated metadata is not evaluated.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Twitter Card Parser: Extract twitter metadata entries from HTML source in document order, preserving repeated keys. For a complementary task, use Meta Tag Parser: Extract named meta entries from HTML source in document order, preserving repeated keys.

References

Open Graph Parser — tool.io

Similar or alternative tools

Twitter Card Parser
Extract twitter metadata entries from HTML source in document order, preserving repeated keys.
Meta Tag Parser
Extract named meta entries from HTML source in document order, preserving repeated keys.