Offline sitemap validator
Open Sitemaps 0.9 urlset or index XML. Inspect the namespace, absolute URLs, dates, fields and duplicates.
- Runs in your browser
- No upload
- Check before download
Open Sitemaps 0.9 urlset or index XML. Inspect the namespace, absolute URLs, dates, fields and duplicates. Unknown extensions are reported, DTD and entity declarations are rejected, and schema-location hints are inert and never loaded. No crawling or indexing.
Method: Sitemaps 0.9; XML 1.0
Local processing
Input stays in your browser worker, without requests, storage or content telemetry. Original backups and explicitly revealed exports may contain secrets; keep them local.
Resource limits
Combined input ≤1 MiB; text ≤200,000 characters (XML 100,000); depth 32 / nodes 20,000 per document; at most 1,000 rows/operations; output ≤2 MiB; worker deadline 5 s. Cancel terminates the worker. These application bounds do not guarantee a total browser heap cap.
Choose the profile and review diagnostics before using saved output. Editing, resetting or leaving cancels work and discards the preview. Save original backups separately; no source file is overwritten.
Original backup: 1048576 B / Inspect / generate
How to inspect this input
- Source
Open Sitemaps 0.9 urlset or index XML. Inspect the namespace, absolute URLs, dates, fields and duplicates. Unknown extensions are reported, DTD and entity declarations are rejected, and schema-location hints are inert and never loaded. No crawling or indexing.
- Declared profile
Sitemaps 0.9; XML 1.0
- Review and save
Choose the profile and review diagnostics before using saved output. Editing, resetting or leaving cancels work and discards the preview. Save original backups separately; no source file is overwritten.
- Original backup
Input stays in your browser worker, without requests, storage or content telemetry. Original backups and explicitly revealed exports may contain secrets; keep them local.
Questions about the profile
Declared profile
Open Sitemaps 0.9 urlset or index XML. Inspect the namespace, absolute URLs, dates, fields and duplicates. Unknown extensions are reported, DTD and entity declarations are rejected, and schema-location hints are inert and never loaded. No crawling or indexing. Sitemaps 0.9; XML 1.0
Local processing
Input stays in your browser worker, without requests, storage or content telemetry. Original backups and explicitly revealed exports may contain secrets; keep them local.
Resource limits
Combined input ≤1 MiB; text ≤200,000 characters (XML 100,000); depth 32 / nodes 20,000 per document; at most 1,000 rows/operations; output ≤2 MiB; worker deadline 5 s. Cancel terminates the worker. These application bounds do not guarantee a total browser heap cap.