Sitemap Index Splitter
Split oversized sitemap XML inputs into protocol-compliant files instantly. Generate a sitemap index, enforce 50,000 URL-per-file limits, control split size, and download ready-to-publish XML outputs for technical SEO deployments.
Split large sitemap inputs into protocol-compliant chunks and generate a sitemap index automatically. This tool enforces the 50,000 URL limit per sitemap and supports byte-size split control up to the 50MB protocol maximum.
Used to build absolute <loc> URLs in the generated sitemap index.
Protocol max is 50,000 URLs.
Choose a size target. Protocol max is 50MB uncompressed.
Generated files become prefix + number + .xml
Name used for the generated sitemap index file.
Why Use This Sitemap Index Splitter
Automatic 50k URL Chunking
Split oversized sitemaps into protocol-safe chunks instantly, with optional lower URL limits when you want smaller sitemap part files.
Index + Split XML Generation
Generate a sitemap index XML plus all split sitemap XML files in one run, each with clean filenames and download-ready content.
Validation-Aware Diagnostics
Surface invalid URLs, duplicate URL removals, and optional field issues with line-aware diagnostics so you can publish with confidence.
Private Browser Processing
All parsing and file generation happen locally in your browser. No sitemap data leaves your device.
Common Sitemap Splitting Workflows
Technical SEO Cleanup
Split oversized sitemap exports before submitting to Search Console so crawlers can process all URLs within protocol limits.
Pre-Launch QA
Validate and split generated sitemaps during release checks to avoid indexing delays caused by oversized or malformed sitemap files.
Static Hosting Deployments
Generate split files and publish them into a /sitemaps directory, then deploy a single sitemap index that references every part.
CMS Migration Projects
Normalize legacy sitemap exports, remove duplicates, and produce predictable split file naming during platform migrations.
CI/CD Sitemap Packaging
Run sitemap splitting in release automation and ship deterministic sitemap-index plus chunk files with every deploy.
How The Sitemap Index Splitter Works
Protocol-Compliant Sitemap Splitting
This sitemap index splitter breaks large sitemap inputs into multiple sitemap XML files while respecting the official Sitemaps.org limits: 50,000 URLs and up to 50MB uncompressed size per sitemap file. It then generates a ready-to-publish sitemap index document.
Works With XML Sitemaps Or URL Lists
Paste either a <urlset> XML sitemap or a plain newline URL list. If your XML entries include <lastmod>, <changefreq>, and<priority>, these values are preserved in each generated split file.
Safe Browser-Only Processing
All sitemap parsing and splitting happens entirely in your browser. Your sitemap data is never uploaded to a server, making this tool suitable for private staging URLs and pre-launch technical SEO workflows.
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Sitemap Index Splitter FAQs
It splits a large sitemap into multiple sitemap XML files and generates a sitemap index that references each split file. The splitter enforces protocol-aware URL and size limits.
Yes. The tool is 50k URL aware by default and caps the per-file URL limit at 50,000 to stay compliant with the sitemap protocol.
Yes. You can configure target file size thresholds up to 50MB uncompressed. Splitting occurs by URL count and file size, whichever limit is reached first.
Yes. You can paste one absolute URL per line. The tool will build valid sitemap XML chunks and generate a sitemap index automatically.
Yes. Duplicate URLs are removed before file generation, and the diagnostics panel reports how many duplicates were detected and removed.
No. Processing is fully browser-side. Your sitemap input and generated output files stay on your device.