Free ToolLarge-Site SEOClient-Side
Sitemap Builder & Splitter
Generate valid, chunked sitemap.xml files and a sitemap_index.xml—all in your browser. Enforce the 50k URL and 50 MB limits, optionally GZIP each part, and download a single ZIP.
Ship large sitemaps safely
Publish faster with your dashboard
Track indexing & performance
Ready to publish new pages?
Build clean sitemaps here, then open your dashboard to publish + schedule content and updates.
Add URLs, build sitemaps, then publish content in your dashboard
Dashboard URLs Input
URL Governance
Defaults (optional)
Row-level values from CSV override these defaults.
Ready to publish new pages?
Build clean sitemaps here, then open your dashboard to publish + schedule content and updates.
Splitting & Limits
Hard-capped at 50,000 per spec
We also enforce a 50 MB maximum per part.
Index Location (optional)
If blank, the index will reference filenames only.
Build
Debug & Tests (local)
Who is this for?
Fast-Changing Sites
Ecommerce, marketplaces, news, UGC—where thousands of URLs shift weekly.
Migrations & Replatforming
Emit clean sitemaps to speed re-indexing and validate coverage.
How it works
- Paste URLs or upload CSV (
url,lastmod,changefreq,priority). - Choose governance (force HTTPS, trailing slash mode, de-dupe) and defaults.
- Split with caps: ≤50,000 URLs & ≤50 MB per file. Optional
.xml.gz. - Download a ZIP with
sitemap_index.xmland all parts.
Tip: Host the ZIP contents at
/sitemaps/ (or any folder) and submit the index to Search Console.Ready to publish new pages?
Build clean sitemaps here, then open your dashboard to publish + schedule content and updates.
Keep the tools onlineBuilt & maintained by a tiny team
If these tools saved you time, consider supporting Postly. Even a small tip helps keep the servers, APIs, and improvements alive.
No pressure — tools stay free. If you can chip in, you’re directly funding uptime and improvements for everyone.
ToolboxLoading…
Find the right tool in seconds
Search, filter, and jump straight into what you need — no scrolling doom.
Filter by categoryTip: try “pdf”, “seo”, “video”, “regex”, “jwt”.