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Resource Hint Link Generator
Generate escaped, inert link markup for four explicit resource-hint types.
Pasted JSON record array, One UTF-8 JSON file
resource-hints.html.txt, resource-hints-report.json
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Supply records containing rel and an absolute HTTP or HTTPS URL.
- Use only the supported optional attributes for each relation; preload requires an as value.
- Generate and download inert markup and its report. Duplicate records remain in input order.
Examples
A preload record with as=style generates one escaped stylesheet preload link line.
Limitations
- At most 200 records, 64 KiB input, 4096 URL units, 1 MiB combined output and 30 seconds.
- Origin-only URLs for dns-prefetch and preconnect; no credentials or fragments. The finite attribute matrix rejects unsupported fields, MIME parameters and attributes for the wrong relation.
- Output is text and is never inserted or fetched. No performance prediction, browser behavior or complete HTML-validation claim. Duplicate identity uses literal parsed fields rather than URL canonical equivalence.
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