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Free ToolLarge-site SEOClient-side

Sitemap Builder & Splitter

Generate valid, chunked sitemap files and a sitemap index in your browser.

50k URL cap support50 MB checksZIP download
Split safely for large sites
Ship updates faster
Keep indexing cleaner

Add URLs

URL Governance
Defaults
CSV row values override these defaults.
Splitting & Limits
Hard-capped at 50,000 URLs and 50 MB per part.
Index Base URL
Leave blank to reference filenames only.
Build
Debug & Tests

Who is this for?

Fast-changing sites

Great for ecommerce, marketplaces, news, and large content inventories.

Migrations

Useful when replatforming or reindexing a large set of URLs.

Headless teams

Helpful when you need more control than a plugin gives you.

How it works

  1. Paste URLs or upload a CSV.
  2. Choose governance rules and defaults.
  3. Split into compliant sitemap parts, with optional gzip.
  4. Download a ZIP with the index and all parts.
Tip: host the ZIP contents in a sitemaps folder and submit the index in Search Console.

Continue in Postly

Use Postly to publish new pages, coordinate updates, and keep your workflow in one place.

SEOFree tool

Use Postly for the next step

After you generate a result, keep the workflow moving. Turn the insight into posts, briefs, and a repeatable content calendar.

Postly social media scheduler

Schedule and publish social posts across your connected channels.

Postly Email Campaign Publisher

Publish to MailChimp, Brevo, Kit, ActiveCampaign, and Beehiiv.

Create content in Postly
Social media publishing

Postly Social Posting Demo

Create and publish posts across your social channels from one clean Postly workflow.

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Email publishing

Postly Email Publishing Demo

Create and publish email campaigns across your platforms from one clean Postly workflow.

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Keep moving without hunting through the directory.

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Free tool, next step ready

Turn this result into published campaigns with Postly

Use the output from this tool in one workspace for social media publishing and email campaign publishing. Draft, schedule, publish, and keep the work moving without switching between disconnected tools.

Bulk and recurring postsCampaign-ready contentOne publishing workspace

Social media publishing

Plan, schedule, and publish posts across your connected channels.

Email campaign publishing

Create and publish campaigns for Mailchimp, Brevo, Kit, ActiveCampaign, and Beehiiv.

Built for conversion workflows

Capture the moment after someone creates, downloads, or audits something and move straight into publishing.