KML Cleaner Online — Fast, Private & Spreadsheet-Ready
Clean up bulky KML files in seconds. Remove duplicate or empty placemarks, normalize coordinates, and export a CSV placemark report without uploading anything to a server.
1. Drop or Paste KML
Paste your raw KML or drop a file, then choose clean-up options.
2. Review & Export
Cleanup insights
- Input placemarks: 0
- Output placemarks: 0
- Removed nodes: 0
- Coordinate coverage: —
- Processing time: —
About This KML Cleaner
Online KML Cleaner is built for GIS professionals, drone pilots, and anyone moving geospatial data from the field into client-ready reports. The engine removes redundant metadata, strips stray whitespace, resolves messy placemark duplicates, and reformats coordinates into a lean, readable layout. Everything runs locally in your browser, so sensitive fieldwork files never touch our servers. Lightweight logic and a rigorously optimized interface keep render times under a second, even when you paste in multi-megabyte exports. The optional placemark-to-CSV report is made for analysts who need spreadsheet-ready summaries moments after their flight.
How to Use
Drop a .kml file into the workspace or paste raw markup into the editor. Choose whether you want empty placemarks trimmed, duplicate locations merged, alphabetical sorting, or whitespace cleanup. Press “Clean KML now” to instantly produce a tidy, standards-compliant document. Review the live insights panel for a breakdown of what changed, then copy the cleaned markup, download it to disk, or export a placemark CSV for mapping tools and spreadsheets. Everything updates in real time, so you can iterate until the structure looks perfect.
Optimization Tips
Use descriptive placemark names before uploading to any public platform—our sorter keeps related items grouped, making quality assurance easier. If you work with repeated survey routes, enable duplicate merging to avoid GPS breadcrumb clutter. For archive-ready exports, pair the CSV report with the cleaned KML so colleagues can filter the dataset without GIS software. Need to track revisions? Download the cleaned file and keep the cleanup insights as your audit trail. The tool runs offline after the first load, so you can sanitize field data even when you lose signal.
FAQs
Is the KML cleaning process private?
Yes. All parsing and cleanup logic runs inside your browser session. The file never uploads anywhere, which keeps proprietary coordinates and survey notes protected.
What makes this tool different from other KML cleaners?
Alongside deduplication and whitespace trimming, you get a one-click CSV export that lists every cleaned placemark with lat/long pairs, letting analysts move straight into spreadsheet reviews.
Can I restore my original KML?
Your original markup stays untouched in the left editor. If you need to start over, simply paste the source again or reload the page—the tool never overwrites your local file.
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