Generate an XML sitemap
Paste your URLs — optionally with a date and priority after each — and get a sitemap. Drop an existing sitemap.xml to edit one you already have.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Paste one URL per line.
- Set the default change frequency, priority and last-modified date.
- Download sitemap.xml, put it on your site and mention it in robots.txt.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see fetch the tool’s own code — and, for a few heavy tools, their open-source engine from a public CDN — plus one small page-view ping to loreatec.jp (page address and title, nothing more). None of them carry your file.
Frequently asked questions
Do changefreq and priority do anything?
Very little. Google has said for years that it largely ignores both. The last-modified date (lastmod) is the field it does use, and only when it is accurate. An accurate date beats a page of invented priorities.
How many URLs fit in one sitemap?
50,000 URLs or 50 MB uncompressed, whichever comes first. Beyond that you split it and add a sitemap index. The tool warns you at the limit instead of producing a file that will be rejected.
Does anything leave my browser?
No. Nothing is sent to a server. The whole tool is a small program that runs inside your browser tab. Once the page has loaded, it keeps working even with the internet switched off.