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RSS / Atom Feed Inspector
Inspect complete RSS or Atom declarations,entries,links and inherited URL bases.
Optional UTF-8 source file (overrides text), Source
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
- Enter the displayed example values,or choose the local input files requested by the controls. Optional source files take precedence where labelled.
- Choose Inspect feed and inspect the complete result and any reported limitations.
- Use Download result and each companion download link to save complete outputs. Reset clears output and restores example controls.
Examples
Source: <feed xmlns="http://www.w3.org/2005/Atom" xml:base="https://example.invalid/"><id>urn:example:feed</id><title>Example</title><updated>2026-10-23T10:00:00Z</updated><entry><id>urn:example:entry</id><title>Local entry</title><updated>2026-10-23T10:00:00Z</updated><link href="entry"/></entry></feed>
Limitations
- Inspect complete unnamespaced RSS2.0 or Atom1.0 feeds and all ordered item/entry declarations. Retain original XML and complete namespace-aware trees,attributes,extensions and text. Resolve known Atom links/RSS links,enclosures,sources and permalink GUID strings against declared xml:base;carry inherited xml:lang. Relative unresolved base chains remain explicit,no host is invented. Missing/repeated finite required-field declarations are diagnostics,not a universal feed validity decision. HTML/XHTML stays inert. One UTF-8 source1 MiB,2,000entries/10,000URL declarations/20,000XML nodes/40levels. DTD/custom entities/processing instructions refuse. Complete JSON20 MiB;all processing stays in your browser,no URL is fetched.
- Complete outputs only. Unsupported or oversized input is refused. Follow the displayed job-specific bounds and format policies.
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