v146 · Web APIs · MIME Type Explorer
MIME Type Explorer
Fetch any Data URL and inspect the content-type header the browser reports back. In Chrome 146, the header includes all parameters (like charset) from the URL's MIME type. In older Chrome, parameters were stripped.
How this works: When you
fetch() a data: URL, the browser parses the URL and returns a synthetic Response. The content-type header on that Response should reflect the full MIME type including parameters. Chrome 146 fixes this to match the spec.
presets
custom URL
fetch results
| Data URL (truncated) | content-type header | Expected parameters | Returned parameters | Parameters preserved? | Status |
|---|---|---|---|---|---|
| Fetch a URL above to see results | |||||