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Relative URL Resolver
Resolve a relative reference against an absolute HTTP or HTTPS base and download canonical URL components without fetching it.
Absolute HTTP/HTTPS base URL, Relative or absolute reference text
JSON resolved URL report
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
- Enter Absolute base URL and Relative reference; an empty reference is allowed.
- Select Resolve URL.
- Download resolved-url.json to compare supplied text and canonical components.
Examples
Base https://example.test/a/b/ with ../c?x=1#part resolves to https://example.test/a/c?x=1#part.
Limitations
- 4,096 UTF-16 units per field, 32 KiB combined input, 64 KiB report and 30 seconds. Escaped output expansion is bounded separately.
- Credentials in either the supplied base or final result and non-HTTP(S) results are rejected. Component strings use the standard URL API encoded representation.
- No fetch, navigation, DNS/redirect resolution, input auto-prefixing, path allowlist or security-safe destination certification.
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