# WKT Studio

> The GIS map editor and spatial data platform built for developers, data engineers, and GIS professionals.

## Overview
WKT Studio (https://wktstudio.com) is a fast, web-based GIS map visualizer and editor. It provides native support for Well-Known Text (WKT) geometries from PostGIS (`ST_AsText`), Shapely, and GDAL, along with direct import and export of GeoJSON, Shapefiles (.shp), CSV (with WKT or lat/lng coordinates), KML, and PostGIS SQL queries.

## Core Capabilities
- **WKT Visualizer & Editor**: Native rendering of all OGC standard geometry types: POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, and GEOMETRYCOLLECTION.
- **Format Converter**: Instant client-side conversion between WKT, GeoJSON, and Well-Known Binary (WKB hex).
- **File Ingestion**: Open and inspect GeoJSON (.geojson, .json), Shapefiles (.shp + .dbf), and CSV files directly in the browser without desktop GIS software like QGIS or ArcGIS.
- **Attribute Table**: Spreadsheet-style attribute viewer and editor with live selection synchronization.
- **Spatial Analysis**: Run Buffer calculations, Polygon Union, Difference (Subtraction), and measurement of distances and polygon areas in meters, kilometers, and hectares.
- **PostGIS SQL Integration**: Export geometries as ready-to-run PostGIS `INSERT` statements with `ST_GeomFromText`.
- **REST API**: Programmatic access to read, append, and delete GeoJSON features and layers per project using API keys.
- **Collaboration & Embeds**: Share public read-only map links, invite team members with viewer/editor permissions, and embed maps with responsive iframe widgets.

## Key URLs
- Home: https://wktstudio.com
- About & Contact: https://wktstudio.com/about
- Free WKT Viewer: https://wktstudio.com/wkt-viewer
- Geometry Converter: https://wktstudio.com/wkt-converter
- GeoJSON Viewer: https://wktstudio.com/geojson-viewer
- Shapefile Viewer: https://wktstudio.com/shapefile-viewer
- Map Templates: https://wktstudio.com/templates
- Public Map Gallery: https://wktstudio.com/explore
- REST API Documentation: https://wktstudio.com/api-docs
- Pricing: https://wktstudio.com/pricing
- Pricing Spec for Agents: https://wktstudio.com/pricing.md
- OpenAPI Spec: https://wktstudio.com/openapi.json
- Blog & Guides: https://wktstudio.com/blog
- RSS Feed: https://wktstudio.com/feed.xml
- Sitemap: https://wktstudio.com/sitemap.xml
- Support: support@wktstudio.com

## WKT Geometry Reference
Per-type reference pages with OGC syntax rules, valid and invalid examples, common parse errors, and PostGIS + Shapely recipes.
- Index of all types: https://wktstudio.com/wkt
- POLYGON: https://wktstudio.com/wkt/polygon
- MULTIPOLYGON: https://wktstudio.com/wkt/multipolygon
- LINESTRING: https://wktstudio.com/wkt/linestring
- MULTILINESTRING: https://wktstudio.com/wkt/multilinestring
- POINT: https://wktstudio.com/wkt/point
- MULTIPOINT: https://wktstudio.com/wkt/multipoint
- GEOMETRYCOLLECTION: https://wktstudio.com/wkt/geometrycollection

## Format Conversion Pages
Each page runs the conversion client-side and documents the equivalent PostGIS SQL.
- Index of all converters: https://wktstudio.com/convert
- WKT (Well-Known Text) to GeoJSON (RFC 7946): https://wktstudio.com/convert/wkt-to-geojson
- GeoJSON (RFC 7946) to WKT (Well-Known Text): https://wktstudio.com/convert/geojson-to-wkt
- WKT (Well-Known Text) to WKB (Well-Known Binary Hex): https://wktstudio.com/convert/wkt-to-wkb
- WKB (Well-Known Binary Hex) to WKT (Well-Known Text): https://wktstudio.com/convert/wkb-to-wkt
- CSV with latitude / longitude columns to GeoJSON FeatureCollection (RFC 7946): https://wktstudio.com/convert/csv-to-geojson
- Multiple WKT geometries, one per line to GeoJSON FeatureCollection (RFC 7946): https://wktstudio.com/convert/batch-wkt-to-geojson
- ESRI Shapefile (.shp) to GeoJSON (RFC 7946): https://wktstudio.com/convert/shapefile-to-geojson
- CSV (Lat/Lng or Address Coordinates) to WKT (Well-Known Text): https://wktstudio.com/convert/csv-to-wkt

## Map Templates
Ready-made GeoJSON datasets in EPSG:4326, downloadable or openable directly in the editor.
- Index of all templates: https://wktstudio.com/templates
- World Capitals (Point, 148 features): https://wktstudio.com/templates/world-capitals
- Latin America Countries (Polygon, 20 features): https://wktstudio.com/templates/latam-countries
- US States (Polygon, 50 features): https://wktstudio.com/templates/us-states
- Sample Routes (LineString, 5 features): https://wktstudio.com/templates/sample-routes
- Coverage Zones (Polygon, 6 features): https://wktstudio.com/templates/sample-zones

## Guides & Articles
- WKT Studio vs geojson.io: Which Web GIS Tool is Best for Developers? (2026-08-14): https://wktstudio.com/blog/wkt-studio-vs-geojson-io
  Compare WKT Studio and geojson.io on WKT support, Shapefile import, PostGIS integration, REST API access and team collaboration, feature by feature.
- WKT Studio vs QGIS: When to Use a Lightweight Web GIS vs Desktop GIS (2026-08-13): https://wktstudio.com/blog/wkt-studio-vs-qgis
  Learn when to use browser-based WKT Studio versus desktop QGIS. Compare inspection speed, PostGIS debugging, heavy raster processing, and sharing.
- SRID 4326 and Longitude/Latitude Order: The Practical Guide (2026-08-12): https://wktstudio.com/blog/srid-4326-longitude-latitude-order
  Understand EPSG:4326, why web tools expect longitude then latitude, and how to fix swapped or projected PostGIS coordinates.
- ST_AsText vs ST_AsGeoJSON: Which PostGIS Export Should You Use? (2026-08-11): https://wktstudio.com/blog/st-astext-vs-st-asgeojson
  Compare ST_AsText and ST_AsGeoJSON for debugging, APIs, web maps and coordinate precision, with practical PostGIS queries you can run today.
- How to Convert WKT to GeoJSON (Online, Free) (2026-07-07): https://wktstudio.com/blog/how-to-convert-wkt-to-geojson
  Step-by-step guide to converting Well-Known Text (WKT) geometry to GeoJSON, online and for free — plus the format differences you need to know.
- What Is WKT (Well-Known Text)? Format Explained with Examples (2026-07-06): https://wktstudio.com/blog/what-is-wkt-well-known-text
  A clear explanation of the Well-Known Text (WKT) format: syntax, every geometry type, and real examples you can paste into a map viewer.
- Visualize PostGIS Geometry on a Map Without QGIS (2026-07-05): https://wktstudio.com/blog/visualize-postgis-geometry-without-qgis
  Quickly inspect PostGIS geometry on a map straight from a SQL query — no QGIS install required. Copy ST_AsText output into a browser viewer.

## Pricing Summary
- **Free ($0/month)** — Try the core workflow and save your maps: 3 projects; 2 layers per project; 50 features per layer; Public read-only sharing; Import / export CSV; Import GeoJSON & Shapefile; WKT paste & visualize; REST API (100 calls/month).
- **Pro ($10/month or $99/year)** — Scale professional GIS workflows: Unlimited projects; 20 layers per project; 5,000 features per layer; 10 active collaborators per project; Visual Attribute Table; REST API per project (1,000 calls/month); KML export; Version history (20 snapshots); Spatial analysis: Buffer, Union; Embed iframe on your website.

Full machine-readable pricing spec: https://wktstudio.com/pricing.md

## REST API Summary
- Base URL: `https://wktstudio.com/api/v1`
- Authentication: `Authorization: Bearer <api_key>`
- Machine-readable spec: https://wktstudio.com/openapi.json
- Endpoints:
  - `POST /projects` — Create project
  - `GET /projects/{id}/layers` — List layer metadata
  - `POST /projects/{id}/layers` — Create layer with optional features
  - `GET /projects/{id}/features?bbox={minLng,minLat,maxLng,maxLat}&limit={n}` — Query GeoJSON FeatureCollection
  - `POST /projects/{id}/features` — Append GeoJSON features
  - `DELETE /projects/{id}/features` — Delete feature by featureId