Repair Legacy KML for Windows11

Job ID: 40300487

Budget: $250 – $750 USD

I have a very large Google Earth KML that I began roughly 25 years ago. On Windows 7, 8, and 10 it still opens and navigates without complaint, but under Windows 11 the moment I load it Google Earth slows to a crawl—loading, zooming, panning, and even simple layer toggles can take minutes. The file does open and it never crashes, yet the performance hit makes it practically unusable.

All I need is a thorough validation and repair, bringing the file up to current KML/XML standards without altering any of the actual content or structure. I’m looking for you to:

• Run the file through a modern validator (XMLLint, Google’s KML validator, Altova XMLSpy, etc.)
• Identify and correct deprecated tags, malformed entities, encoding glitches, or anything else the newer XML parser dislikes.
• Return a clean, standards-compliant KML that performs normally in Google Earth 7.3+ on Windows 11.

Acceptance test: I’ll open the repaired file on a Windows 11 machine and expect it to load quickly, pan/zoom smoothly, and switch layers instantly—matching the responsiveness I still see on older systems.

If you’re fluent in large-scale XML/KML troubleshooting and can deliver that single, rock-solid file, let’s get this map back to work.
Related categories: XML Education Software Testing Google Earth