XML Sitemap Generator & Protocol Validator

The XML Sitemap Generator transforms raw URL lists into fully compliant Google XML sitemaps following the Sitemaps.org 0.9 protocol. Set default priority weights, change frequencies, and last-modified dates, validate syntax, and download your production-ready sitemap.xml file directly from your browser.

By Elena Vance, Technical SEO Specialist • Last Updated: September 20, 2026

Sitemap 0.9 Builder

Paste URLs (One Full URL per Line)

Sitemap Tag Directives

Change Frequency (<changefreq>)

Default Priority (<priority>)

Last Modified Date (<lastmod>)

Auto-prefix missing https://

Lines Pasted

Valid Unique URLs

Malformed Skipped

Generated sitemap.xml Output

How to Generate an XML Sitemap

Creating a compliant sitemap file for Google Search Console takes just four simple steps:

Paste Your Site URLs: Gather your canonical web pages (from an export, text editor, or crawl log) and paste them into the input box—one URL per line.
Configure Tags: Set your expected update frequency (e.g. weekly or monthly) and priority weighting. The tool automatically detects your root homepage and sets its priority to 1.0.
Verify Validation Metrics: Review the dashboard counters to confirm that duplicates and malformed strings were filtered out cleanly.
Download or Copy: Click Download sitemap.xml to save the file, then upload it to your web server root directory (e.g., https://example.com/sitemap.xml).

What is an XML Sitemap in Technical SEO?

An XML Sitemap is a structured XML document conforming to the Sitemaps.org protocol. It acts as an authoritative roadmap for search engine crawlers (Googlebot, Bingbot, Yandex), detailing all canonical pages available for indexing on a website.

Beyond simply listing page URLs, an XML sitemap provides critical metadata about each URL:

<loc>: The exact canonical URL of the web page.
<lastmod>: The date the content was last modified (in W3C Datetime format YYYY-MM-DD). This is Googlebot's most trusted sitemap signal.
<changefreq>: How frequently the page is likely to change.
<priority>: The relative priority of this URL compared to other pages on your site (ranging from 0.0 to 1.0).

Key Features of This Sitemap Generator

Automatic URL Sanitization: Detects and prefixes missing https:// schemes and cleans whitespace automatically.
Deduplication Engine: Filters out identical repeated URLs in large batches to prevent redundant sitemap nodes.
Sitemaps.org 0.9 Compliance: Produces valid XML headers, proper namespace declarations, and standard entity escaping for ampersands and quotes.
One-Click Binary Blob Export: Downloads the sitemap.xml file directly without any server-side database storage.

Who Needs an XML Sitemap Generator?

Static Site & JAMstack Developers: Build sitemaps for sites hosted on GitHub Pages, Netlify, Vercel, or AWS S3 that lack CMS automation.
Technical SEO Auditors: Extract priority pages from site crawls and package them into dedicated sitemap subsets for indexation tracking.
E-Commerce Webmasters: Generate targeted category sitemaps to verify that high-margin seasonal pages receive immediate search bot attention.
Site Migrations: Create temporary sitemaps of old URLs to expedite Google's discovery of 301 redirects.

Best Practices vs. Common Mistakes in XML Sitemaps

Sitemap Factor	Recommended Best Practice	Common Mistake to Avoid
URL Status Codes	Strictly include HTTP 200 OK indexable pages.	Including 301 redirects, 404 broken pages, or 500 server errors.
Robots Alignment	Ensure every sitemap URL is allowed in robots.txt.	Listing URLs that are blocked by `Disallow:` directives.
Size Limits	Keep under 50,000 URLs and 50MB per sitemap file.	Exceeding 50MB, which causes Google Search Console parsing failures.
Lastmod Accuracy	Update `<lastmod>` only when substantive edits occur.	Faking daily lastmod dates on static, unchanged content.
Canonical URL Match	List canonical URLs exactly as defined in `<link rel="canonical">`.	Mixing HTTP and HTTPS versions or trailing-slash discrepancies.

Comparison: XML Sitemap vs. HTML Sitemap vs. RSS Feeds

Format	Primary Audience	Capacity Limit	Core SEO Purpose
XML Sitemap	Search Engine Bots	50,000 URLs per file	Complete catalogue discovery and crawl budget optimization.
HTML Sitemap	Human Visitors & Bots	~100 to 500 links	Human navigation, internal page rank distribution, and UX fallback.
RSS / Atom Feed	Subscribers & Bots	Latest 10 to 50 items	Alerting Google immediately when new blog posts or news items publish.

Privacy: Everything Runs in Your Browser

No pasted URLs, client domains, or internal website hierarchies are transmitted to or stored on BizBop servers. The entire XML construction and download pipeline executes locally via JavaScript in your client browser.

Frequently Asked Questions

What is the maximum file size and URL limit for a single XML sitemap?

Under the standard Sitemaps.org protocol supported by Google and Bing, a single XML sitemap file can contain a maximum of 50,000 URLs and must not exceed 50 Megabytes uncompressed. Websites with larger catalogs must break URLs into multiple sitemaps using a Sitemap Index file.

Does submitting an XML sitemap guarantee that all URLs will be indexed?

No. A sitemap is an indexing recommendation rather than a command. Google uses sitemaps to discover URLs and understand site structure, but indexation decisions depend on content quality, internal link equity, and search intent alignment.

Does Google use the priority and changefreq tags in ranking calculations?

Google representatives have confirmed that Googlebot largely ignores the priority and changefreq tags, relying instead on its own crawling heuristics. However, Bing and other international search engines still utilize these hints to schedule crawler visits.

Should noindexed, redirected, or 404 pages be included in a sitemap?

Never include non-canonical URLs in an XML sitemap. Sitemaps should strictly contain clean, indexable URLs returning an HTTP 200 OK status code. Including 301 redirects, 404 errors, or pages blocked by robots.txt wastes crawl budget.

Where should I submit my completed XML sitemap?

Submit your sitemap URL directly inside Google Search Console (under the 'Sitemaps' menu) and Bing Webmaster Tools. Additionally, declare your sitemap location inside your robots.txt file using the directive 'Sitemap: https://example.com/sitemap.xml'.