Task-oriented documentation for direct map editing, data tables, Processing, Geometry Health, CRS, local and remote sources, export and project recovery.
A current first-session walkthrough of the editor—from opening data to editing, analysing and exporting it safely.
A current first-session walkthrough of the editor—from opening data to editing, analysing and exporting it safely.
Open guide →Understand the difference between what is visible, filtered and selected—and how those states affect editing and Processing.
Open guide →Create and reshape points, lines and polygons with direct map tools, snapping, topology and Geometry code.
Open guide →Edit typed attributes, calculate fields, build filters, inspect statistics and export clean attribute-only CSV data.
Open guide →Apply single-symbol, category and numeric styling and configure labels without changing source geometry.
Open guide →Run repeatable vector operations with explicit input scopes, non-destructive previews and auditable outputs.
Open guide →Relate features by location, copy attributes, create one output per spatial match and summarise overlapping data.
Open guide →Find structural and topology problems, apply safe cleanup and review shape-changing repairs before creating a repaired layer.
Open guide →Understand source, storage and export CRS, correct misinterpreted coordinates and choose projected processing safely.
Open guide →Keep large layers usable by choosing the right import, visibility, scope, preview and processing strategy.
Open guide →Open common vector formats directly in the browser and understand which formats must remain packaged.
Open guide →Connect directly to ArcGIS services, GeoJSON, WMS and tile sources while keeping local files browser-local.
Open guide →Choose the correct scope and format, export geometry or attributes, and preserve complete work in an EditPolygon project.
Open guide →Understand the mobile drawers, map controls and workflows that differ from the desktop layout.
Open guide →Open KML or KMZ geometry, edit it with the current tools, validate it and export a verified result.
Open guide →Edit GeoJSON visually, work directly with Geometry code, manage attributes, run Processing and export the required scope.
Open guide →Preserve CircleByCenterPoint geometry as centre-and-radius data and understand when polygon conversion is required.
Open guide →Use Processing → Dissolve for repeatable merging, preview the result on the map and understand Polygon versus MultiPolygon output.
Open guide →Use the feature-specific split tool when you need to cut one active polygon with a deliberate line on the map.
Open guide →Open a complete Shapefile package in the browser, edit geometry and attributes, validate it and export the result without sending the source dataset to EditPolygon.
Open guide →Open GeoPackage feature tables directly in the browser, edit imported features with the normal GIS workspace and export the result in a supported interchange format.
Open guide →Create distance-based polygon buffers around points, lines or polygons with an explicit scope, map preview and auditable Processing output.
Open guide →Keep only the portions of an input layer that fall inside a polygon mask, preview the result and preserve the source as a separate layer.
Open guide →Create the geometry shared by two layers, preserve attributes from both inputs and inspect the overlay before committing the result.
Open guide →Paste known latitude/longitude vertices to create a polygon, inspect the ring on the map, edit exact geometry when required and validate the finished shape.
Open guide →Start with the problem you are trying to solve. Each answer links to the focused EditPolygon workflow rather than duplicating the full documentation.
Yes. Keep the Shapefile components together in one ZIP and EditPolygon reads the local dataset in your browser.
Edit Shapefile ZIP files online →Yes. Supported GeoPackage feature tables can be opened locally and edited as normal project layers.
Edit GeoPackage data online →Use Geometry Health to identify the problem, apply safe cleanup and review any repair that changes shape or topology.
Check and repair geometry →Use Processing → Dissolve when internal polygon boundaries should be removed within one input layer.
Merge and dissolve polygons online →Use Processing → Clip with the dataset to trim as the input and polygon geometry as the mask.
Clip GIS data with a polygon online →Clip trims the first input with a polygon mask; Intersection creates shared geometry and combines attributes from both inputs.
Intersect GIS layers online →Use Draw → Add by coordinates for known geographic latitude/longitude vertices, then inspect and validate the resulting ring.
Create a polygon from coordinates online →Yes. GeoJSON features can be edited on the map, through Geometry code and through the normal attribute and Processing workspaces.
Edit GeoJSON online →Yes. Local files are processed browser-side; remote services are contacted only when you deliberately add those web sources.
Open and import GIS data →Drawing, vertex editing and feature-specific geometry changes live on the map.
Attributes, selection, filters, styling, fields, joins and CRS are organised in the Data/GIS interface.
Repeatable scoped analysis and geometry operations run through one Processing Toolbox.
Local files stay in your browser; remote services are contacted directly only when you add them.