--- title: "XML Sitemap Generator from a URL List | Sitemap Lark" description: "Paste URLs or drop a .txt/.csv and get a clean sitemap.xml: URLs encoded and escaped, duplicates removed, split at 50,000 URLs, .xml, .gz or ZIP." url: https://sitemaplark.me/ --- B1 Build line # XML sitemap generator Paste a list of URLs or drop a .txt / .csv export. You get a valid sitemap.xml with every address encoded and escaped, duplicates gone, and large lists split into numbered files plus an index. ## What the generator does to your list - **Cleans each URL.** Spaces around it are trimmed, any `#fragment` is dropped, and spaces, accented letters and other characters a URL may not carry are percent-encoded as UTF-8. International domains become punycode. - **Escapes it for XML.** `&`, `<`, `>`, quotes and apostrophes become entities, so `?a=1&b=2` no longer breaks the file. - **Keeps one site.** URLs on another host, on `http` instead of `https`, or with and without `www.` are listed and left out, because a sitemap may only cover its own host. - **Removes duplicates** after cleaning, keeping the first occurrence and your order. - **Splits** at 50,000 URLs or 50 MB uncompressed per file, the protocol's limits, and writes a sitemap index that lists the parts. Upload the files to your site, add a `Sitemap:` line to robots.txt, and submit the sitemap (or the index) in Google Search Console and Bing Webmaster Tools. ## More stops on the network Every tool works on what you paste or open, in this tab. - [Sitemap index generator](https://sitemaplark.me/sitemap-index-generator/): B2 List your sitemap files, or number them from a pattern, and get a sitemap_index-style file. - [hreflang sitemap generator](https://sitemaplark.me/hreflang-sitemap-generator/): B3 Turn a pages × languages table into xhtml:link alternates, x-default included, with codes checked. - [Sitemap validator](https://sitemaplark.me/sitemap-validator/): C1 Line-numbered XML errors, namespaces, hosts, dates, limits and image, video, news and hreflang tags. - [Sitemap URL extractor](https://sitemaplark.me/sitemap-url-extractor/): C2 Pull every URL and lastmod out of a sitemap or index, filter, sort and export a list or CSV. - [Sitemap diff](https://sitemaplark.me/sitemap-diff/): C3 Compare two versions: URLs added, removed and with a changed lastmod, exported as CSV. - [robots.txt generator](https://sitemaplark.me/robots-txt-generator/): R1 Groups per crawler, allow and disallow rules, sitemap lines, and a preset for AI training crawlers. - [robots.txt tester](https://sitemaplark.me/robots-txt-tester/): R2 Test URLs against a robots.txt the RFC 9309 way and see the rule that decided, plus a lint. ## Recommended Change here for the jobs a page in your browser cannot do on its own. Live checks · cloud browser ### WebTraceCheck A sitemap says which pages exist; whether they answer 200, redirect in a chain or carry a noindex is something only a live request shows. WebTraceCheck's free technical SEO check and redirect chain checker look at real URLs for you. It also offers a disposable cloud browser: Chrome, Firefox, Brave, Edge or Chromium on an isolated Linux desktop that is deleted after each session, with free daily time. [Try WebTraceCheck](https://webtracecheck.com/) Pre-launch testing · temp mail ### CleanTempMail Before a new site goes live, send yourself its sign-up confirmations, password resets and contact-form replies without using your own address. CleanTempMail gives you an instant temporary inbox, no sign-up, with a random or custom address on hundreds of domains; mail is deleted automatically after 3 days. For automated test suites there is a Temp Mail API, paid once per request quota with no subscription. [Get a temporary inbox](https://cleantempmail.com/) ## Frequently asked questions **Why paste URLs instead of letting the tool crawl my site?** Browsers do not let one website read pages from another (the same-origin policy, enforced through CORS), so a page like this cannot crawl your site. Paste the list from your CMS, an export of your pages, a crawler or your analytics instead. That also works for staging sites and pages behind a login. **Should I add changefreq and priority?** Google ignores both, so they are off by default. Other search engines may still read them, and you can switch them on under Options. What helps is an accurate lastmod: the date the page's main content last changed. **How large can one sitemap be?** The sitemaps.org protocol allows at most 50,000 URLs and 50 MB (52,428,800 bytes) uncompressed per file. Gzip makes the download smaller but the limit still applies to the uncompressed size. Above either limit the generator writes numbered files and a sitemap index that lists them. **Which lastmod option should I pick?** Use From the list when your export has a real modification date per URL. Today stamps every URL with today's date, which is only honest for a brand-new site; search engines learn to distrust dates that change without the content changing. **Is anything I paste uploaded?** No. The URLs are cleaned and the files built in JavaScript in this tab, and downloads are created locally. The site counts page views with Cloudflare Web Analytics, which uses no cookies and never receives what you type, paste or drop into the tools.