How the free file check works

The free check runs the same deterministic validation engine the Clearlane platform runs — in your browser, on your machine, against the cited EUDR rule pack. This page explains exactly what happens to your file, and what never does.

🔒 Your file never leaves your browser Checked against EUDR GeoJSON spec v1.5

Everything runs in the browser

When you drop a file on the check, it is read into your browser's memory and processed there — parsing, conversion, validation, repair and the map all execute on your machine. There is no upload step: the check works the same with your network disconnected.

GeoJSON files are validated directly. KML, KMZ and CSV files are first converted into a TRACES-shaped GeoJSON FeatureCollection, and the converted result is then run through the full validator — a conversion that produced an invalid file would be a bug by definition.

What the engine checks

The validator runs the EUDR geolocation rule pack eudr-geojson@1.0.1 — rules as versioned data, each with a severity, a plain-language message and a legal citation. The same pack, the same code, produces the same verdict every time; nothing is sampled, inferred or guessed. Every check has its own page in the error catalogue:

Blocking errors

Warnings

What auto-repair does — and what it never does silently

Repairs are graded by how certain they are, and the grade decides who acts. The engine only ever acts alone when a fix is provably meaning-preserving.

Applied automatically Deterministic

Fixes that cannot change what your file means: closing an unclosed polygon ring and rewinding a wrong-way ring. No vertex moves. Both happen the moment your file is read, and every one is recorded in the repair log.
Suggested — flagged, you apply Heuristic

The latitude/longitude swap is a judgment call, so it is only offered when every out-of-range position becomes valid swapped — and even then it is marked as a suggested repair for you to apply per plot and review on the map.
Needs your choice Changes the shape

Splitting a self-intersecting polygon and removing holes change the plot's shape or area. Each one asks for your explicit confirmation on its own row — never bulk-applied, never silent.
Never done at all By design

The engine never fabricates coordinate precision, never moves a plot, and never invents geometry that was not in your file. A silently relocated farm is worse than a rejection — so it cannot happen here.

The privacy model

Your file never leaves your browser. No part of its contents — coordinates, producer names, areas — is sent anywhere. The one external request this tool makes is for map tiles (a CARTO basemap over OpenStreetMap data) when your plots render on the map; tile requests carry map coordinates of the view, never your file. Fonts are self-hosted, so not even a font provider sees you were here.

The repaired file you download is assembled in the browser from the same in-memory data. Close the tab and everything is gone.

The spec, pinned

Every verdict names its rule and citation. The pack is versioned — eudr-geojson@1.0.1 — so a result you saved is reproducible later: same file, same pack version, same answer.

Checked against EUDR GeoJSON spec v1.5