{"id":23681691,"url":"https://github.com/hyparam/geoparquet","last_synced_at":"2025-07-03T08:08:05.120Z","repository":{"id":268464954,"uuid":"904445844","full_name":"hyparam/geoparquet","owner":"hyparam","description":"Convert geoparquet to geojson in javascript","archived":false,"fork":false,"pushed_at":"2024-12-21T01:08:38.000Z","size":680,"stargazers_count":26,"open_issues_count":2,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-06-09T23:47:22.848Z","etag":null,"topics":["geo","geojson","geoparquet","geospatial","gis","hyparquet","hyperparam","javascript","js","parquet"],"latest_commit_sha":null,"homepage":"","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/hyparam.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2024-12-16T22:49:26.000Z","updated_at":"2025-05-13T12:30:28.000Z","dependencies_parsed_at":"2024-12-16T23:52:59.212Z","dependency_job_id":"d5621003-06ce-4705-929f-245099ac8e98","html_url":"https://github.com/hyparam/geoparquet","commit_stats":null,"previous_names":["hyparam/geoparquet"],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/hyparam/geoparquet","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/hyparam%2Fgeoparquet","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/hyparam%2Fgeoparquet/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/hyparam%2Fgeoparquet/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/hyparam%2Fgeoparquet/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/hyparam","download_url":"https://codeload.github.com/hyparam/geoparquet/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/hyparam%2Fgeoparquet/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":263287861,"owners_count":23443085,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["geo","geojson","geoparquet","geospatial","gis","hyparquet","hyperparam","javascript","js","parquet"],"created_at":"2024-12-29T18:41:18.170Z","updated_at":"2025-07-03T08:08:05.091Z","avatar_url":"https://github.com/hyparam.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# GeoParquet\n\n![GeoParquet parakeets gathered around a map](geoparquet.jpg)\n\n[![npm](https://img.shields.io/npm/v/geoparquet)](https://www.npmjs.com/package/geoparquet)\n[![minzipped](https://img.shields.io/bundlephobia/minzip/geoparquet)](https://www.npmjs.com/package/geoparquet)\n[![workflow status](https://github.com/hyparam/geoparquet/actions/workflows/ci.yml/badge.svg)](https://github.com/hyparam/geoparquet/actions)\n[![mit license](https://img.shields.io/badge/License-MIT-orange.svg)](https://opensource.org/licenses/MIT)\n![coverage](https://img.shields.io/badge/Coverage-95-darkred)\n[![dependencies](https://img.shields.io/badge/Dependencies-1-blueviolet)](https://www.npmjs.com/package/geoparquet?activeTab=dependencies)\n\n**GeoParquet** provides a pure JavaScript workflow to read and convert [GeoParquet](https://github.com/opengeospatial/geoparquet) files into [GeoJSON](https://datatracker.ietf.org/doc/html/rfc7946). Under the hood, it uses the [hyparquet](https://github.com/hyparam/hyparquet) library for efficient in-browser parquet parsing, enabling minimal overhead and fast loading.\n\n## Why GeoParquet?\n\n**GeoParquet** is an emerging standard for storing geospatial vector data in the columnar [Parquet](https://parquet.apache.org/) format. By leveraging Parquet’s columnar storage, GeoParquet files can be significantly more compact and faster to query than their GeoJSON equivalents, especially for large datasets. This can result in:\n\n- **Smaller file sizes:** A GeoParquet file plus this lightweight library can often be much smaller than the equivalent GeoJSON, reducing bandwidth costs and improving load times.\n- **Faster loading:** Pure JavaScript parsing of Parquet files in the browser, with tiny package size means fast page load times.\n- **Seamless integration:** GeoParquet is based on well-established standards (GeoJSON, Parquet), ensuring broad compatibility and extensibility.\n\n## Usage\n\nConvert a GeoParquet file to GeoJSON:\n\n```javascript\nconst { asyncBufferFromUrl, toGeoJson } = await import('geoparquet')\n\nconst file = asyncBufferFromUrl({ url: 'example.parquet' })\nconst geoJson = toGeoJson({ file })\n```\n\n## Demo\n\nCheck out the [live demo](https://hyparam.github.io/geoparquet/) to see GeoParquet in action.\n\n## Parquet Compression Formats\n\nBy default, geoparquet.js supports the most common parquet compression formats: uncompressed and snappy compression.\nTo enable support for other compression codecs, such as gzip, brotli, zstd, etc you can use the `compressors` option.\nThe `hyparquet-compressors` package adds support for all parquet compression codecs:\n\n```javascript\nimport { asyncBufferFromFile, toGeoJson } from 'geoparquet'\nimport { compressors } from 'hyparquet-compressors'\n\nconst file = asyncBufferFromFile('example.zstd.parquet')\nconst geoJson = toGeoJson({ file, compressors })\n```\n\n## References\n\n - https://geoparquet.org/\n - https://github.com/opengeospatial/geoparquet\n - https://geojson.org/\n - https://datatracker.ietf.org/doc/html/rfc7946\n - https://github.com/hyparam/hyparquet\n - https://github.com/hyparam/hyparquet-compressors\n - https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhyparam%2Fgeoparquet","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fhyparam%2Fgeoparquet","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhyparam%2Fgeoparquet/lists"}