NoeFlandre/osm-polygon-website-tag-eunis

OSM Polygon Website Dataset

OpenStreetMap closed ways and polygon relations carrying a non-empty website OR contact:website tag, with full main-page text extracted using Trafilatura. Every statistic below is regenerated from the current upload-acknowledged Parquet artifacts.

Snapshot

Metric	Value	What it means
Snapshot status	In progress	Current published snapshot
Regional PBFs included	386 / 386	Published source shards / expected source PBFs
Published polygon rows	1,726,474	Rows in the public polygons/ files
Comparison observations	2,716,855	Source-level records with a website, contact:website, or Wikidata tag
Duplicate OSM objects	104,927	Objects observed in more than one source snapshot
Conflicting snapshot observations	15	Repeated observations whose tag values disagree with the selected version
Rejected polygon candidates	868,905,743	Candidate objects that did not produce a usable polygon row

Website text

Tag	URLs	Successful	Empty	Failed	Words
website	1,518,605	1,075,910	56,248	386,447	368,299,585
contact:website	169,238	123,520	4,935	40,783	39,386,070

Website-text table counts are unique (osm_type, osm_id) identities across regional rows; regional overlap duplicates are removed globally.

Unique polygons with extracted text: 1,192,980
Counts unique (osm_type, osm_id) polygons across regional rows when any copy has successful, trimmed non-empty website or contact:website text; regional overlap duplicates removed globally. Combined extracted words: 407,685,655

Languages

Detected with GlotLID v3 on successfully extracted text; labels are exact script-aware language_Script codes with a top-1 probability column.

Metric	Value
Distinct languages	397
Labeled website texts	1,075,910
Labeled contact:website texts	123,520

Top 10 labels across both tags:

Language	Texts
eng_Latn	533,896
deu_Latn	216,762
fra_Latn	85,516
pol_Latn	42,731
nld_Latn	30,533
spa_Latn	30,358
rus_Cyrl	28,691
ita_Latn	25,038
jpn_Jpan	24,208
por_Latn	22,377

Sentences

Extracted text is segmented with SaT for the 85 languages the segmenter covers; text in any other detected language records unsupported_language instead of sentences. Segments carry their own trailing spaces but not the line breaks that separated them, so joining them does not reproduce the source text; the full text stays in the *_text columns.

Metric	Value
Sentences	45,823,447
Segmented website texts	1,073,468
Segmented contact:website texts	125,132
Texts in an uncovered language	37,473

Mean sentences per segmented text: 38.2

Polygon geometry

Surface and shape statistics computed over every published polygon row from the area_m2, bbox, and geometry columns. Areas are geodesic on the WGS84 ellipsoid. Population scope: published polygon rows. The complete breakdown is published as stats.json.

Metric	Value
Polygons measured	1,726,474
Total area	906,230.67 km²
Median area	946.58 m²
Mean area	524,902.59 m²
Smallest / largest area	0.01 / 129,636,243,089.97 m²
p95 area	82,053.29 m²
MultiPolygon rows	32
Rows with holes	20
Rows below 1 m²	393

Dataset bounding box: [-179.992396, -77.847199, 179.325994, 82.172551] (min lon, min lat, max lon, max lat).

Geographic distribution

H3 resolution 3 contains 5,850 occupied cells across 1,192,980 unique polygons with successfully extracted, non-empty website or contact:website text, globally deduplicated by (osm_type, osm_id); regional overlap duplicates removed globally. The color scale is logarithmic, counts are absolute, and a Natural Earth 1:110m land backdrop provides geographic context.

Links

Live metrics: Trackio dashboard; it shows this frozen dataset snapshot. Code and README: GitHub repository and README.

Top website hostnames

Hostname	Polygons
www.facebook.com	10,238
www.mcdonalds.com	9,886
tools.usps.com	6,382
www.dollargeneral.com	5,909
locations.tacobell.com	4,579
www.walmart.com	4,446
www.hilton.com	4,366
www.marriott.com	4,314
www.cvs.com	3,975
www.bk.com	3,806

Top contact:website hostnames

Hostname	Polygons
www.7-eleven.com	1,587
www.tesco.com	1,441
5ka.ru	1,224
rosneft-azs.ru	848
www.mcdonalds.com	827
locations.dunkindonuts.com	744
storelocator.asda.com	692
lukoil.ru	575
www.netto-online.de	498
www.pochta.ru	497

Methodology and quality

Geometry is assembled with libosmium. Full main text is extracted independently for both website tags with Trafilatura and is not truncated. Word counts are Python Unicode \w+ matches.

Text statuses are absent, pending, success, empty, invalid_url, unsafe_url, fetch_error, or extract_error. A source is enriched only when every status is success or absent. Failed values retry on later resumptions; successful values are cached.

A URL is marked unsafe_url when its hostname, or any redirect target, does not resolve exclusively to globally routable public IP addresses. Localhost, private, reserved, multicast, and unspecified targets are blocked. Unsupported schemes and URLs containing credentials are classified as invalid_url; redirect limits, timeouts, oversized responses, and unsupported content types are recorded as fetch_error.

Dataset contents

• polygons/*.parquet: the public polygon split, one shard per source PBF.
• analysis/*.parquet: detailed overlap, provenance, hostname, duplicate, conflict, and per-source statistics.
• deduplication_summary.json: counts and tag-conflict totals from the global canonicalization pass.
• manifests/: source inventory, upload checkpoints, and completion receipt.

Public polygon schema

Column	Type	Nullable	Description
polygon_id	string	no	Deterministic source-scoped identifier of the form <source-stem>:<osm_type>/<osm_id>.
region	string	no	Human-readable region label derived from the source PBF filename (Geofabrik convention). Stable and independent of the source filename's extension.
source_pbf	string	no	Original source PBF filename (no path). Reconstructed from the run's processed-pbfs manifest.
osm_type	string	no	"way" for a closed polygonal way, "relation" for an assembled multipolygon or boundary relation.
osm_id	int64	no	Original OSM numeric identifier of the way or relation. Way and relation namespaces are kept distinct.
osm_version	int32	no	OSM version number as recorded on the object at extraction time.
osm_timestamp	timestamp[us, tz=UTC]	no	OSM last-edit timestamp as recorded on the object at extraction time. UTC.
name	string	yes	Trimmed name tag value. None when the tag is absent.
website	string	yes	Trimmed original website tag value. Nullable: None when the tag is absent or whitespace-only.
contact_website	string	yes	Trimmed original contact:website tag value. Nullable: None when the tag is absent or whitespace-only.
has_website	bool	no	True iff the trimmed website tag is non-empty.
has_contact_website	bool	no	True iff the trimmed contact:website tag is non-empty. Only the exact key is checked; unrelated contact:* keys do not contribute.
has_any_website	bool	no	True iff has_website OR has_contact_website. Always True in the public shard (inclusion invariant).
website_class	string	yes	Discrete classification of the website value, or None when the tag is absent.
contact_website_class	string	yes	Discrete classification of the contact:website value, or None when the tag is absent.
website_hostname	string	yes	Lowercased hostname extracted from website, or None when the value is not parseable as a URL or bare hostname.
contact_website_hostname	string	yes	Lowercased hostname extracted from contact_website, or None when the value is not parseable.
tags	string	no	Deterministic JSON object containing every tag of the source OSM object, with keys sorted. {} when the object carries no tags.
tag_keys	string	no	Deterministic JSON array of every tag key of the source OSM object, sorted lexicographically.
tag_count	int32	no	Number of tags carried by the source OSM object. Always non-negative.
osm_primary_tag	string	no	Primary OSM category key for the object, selected from a frozen precedence list (boundary > building > amenity > ...). other when no recognised key is present.
geometry	string	no	Deterministic GeoJSON Polygon or MultiPolygon in WGS84. Coordinate order is [lon, lat]. Coordinates are rounded to seven decimal places. Empty geometries are rejected at extraction time and counted as expected exclusions; they never reach this column.
centroid	string	no	Deterministic GeoJSON Point in WGS84 ([lon, lat]) representing the polygon's centroid. Coordinates are rounded to seven decimal places.
centroid_kind	string	no	Identifier of the centroid algorithm used. Currently always "lambert_azimuthal_equal_area" -- the centroid is computed in a Lambert azimuthal equal-area projection centred on the polygon's area-weighted outer-ring barycenter and reprojected back to WGS84. NOT a geodesic centroid.
lat	double	no	Centroid latitude in WGS84 decimal degrees. Rounded to seven decimal places. NaN and infinity are never produced.
lon	double	no	Centroid longitude in WGS84 decimal degrees. Rounded to seven decimal places. NaN and infinity are never produced.
bbox	string	no	Deterministic JSON array [min_lon, min_lat, max_lon, max_lat] in WGS84 decimal degrees. Coordinates are rounded to seven decimal places.
area_m2	double	no	Polygon area in square metres computed on the WGS84 ellipsoid via pyproj.Geod. Outer-ring area minus the absolute area of every inner ring. Always finite and non-negative.
area_bucket	string	no	Coarse area bucket. One of "<10m2", "10-100m2", "100m2-1km2", "1-10km2", "10-100km2", "100km2-1000km2", ">=1000km2".
schema_version	string	no	Schema version of the public polygon table. Default extraction and enrichment use SCHEMA_VERSION (v1.3); the opt-in language stage writes v1.4.
website_text	large_string	yes	Full main text extracted from website with Trafilatura; null unless extraction succeeds.
website_word_count	int64	yes	Number of Python Unicode \w+ sequences in website_text; null without text.
website_text_status	string	no	Website text enrichment status from the documented frozen vocabulary.
contact_website_text	large_string	yes	Full main text extracted independently from contact:website with Trafilatura; null unless extraction succeeds.
contact_website_word_count	int64	yes	Number of Python Unicode \w+ sequences in contact_website_text; null without text.
contact_website_text_status	string	no	Contact website text enrichment status from the documented frozen vocabulary.
website_language	string	yes	Exact script-aware GlotLID language label for website_text; null unless text was successfully extracted and detected.
website_language_probability	double	yes	Top-1 GlotLID probability for website_language; null without a successful language detection.
contact_website_language	string	yes	Exact script-aware GlotLID language label for contact_website_text; null unless text was successfully extracted and detected.
contact_website_language_probability	double	yes	Top-1 GlotLID probability for contact_website_language; null without a successful language detection.
website_sentences	list<element: string not null>	yes	Sentences segmented from website_text with SaT; null unless website_sentence_status is success. Segments keep their own trailing whitespace but not the line breaks that separated them, so joining them does not reproduce website_text.
website_sentence_count	int32	yes	Number of sentences in website_sentences; null unless the text was segmented.
website_sentence_status	string	no	Why website_text was or was not segmented: success, absent when no text was extracted, unsupported_language when the detected language is outside the segmenter's range, or empty_text when the text carries no segmentable content.
contact_website_sentences	list<element: string not null>	yes	Sentences segmented from contact_website_text with SaT; null unless contact_website_sentence_status is success. Segments keep their own trailing whitespace but not the line breaks that separated them, so joining them does not reproduce contact_website_text.
contact_website_sentence_count	int32	yes	Number of sentences in contact_website_sentences; null unless the text was segmented.
contact_website_sentence_status	string	no	Why contact_website_text was or was not segmented: success, absent when no text was extracted, unsupported_language when the detected language is outside the segmenter's range, or empty_text when the text carries no segmentable content.

Provenance and license

Source filename, byte size, and nanosecond modification time are recorded before processing. The completion receipt binds finalized artifacts by relative path, byte size, and SHA-256.

The map backdrop uses Natural Earth 1:110m Admin-0 country geography, distributed in the source tree under its public-domain terms.

© OpenStreetMap contributors. OpenStreetMap data is available under the Open Database License (ODbL) 1.0; see the OpenStreetMap copyright and attribution page. Regional PBF extracts are provided by Geofabrik.

Website text is third-party content, separate from the OSM data, and is not covered by the ODbL. This dataset asserts no license for that text and grants no additional reuse rights: copyright and licensing conditions remain with each source website. Check the source site's terms or license before using or redistributing extracted text.

Citation

If you use this dataset, please cite it using the machine-readable metadata in CITATION.cff. GitHub and the Hugging Face dataset page can then display the citation directly.

Flandre, Noé. OSM Polygon Website Tag Dataset. Hugging Face dataset