Browser-based · No install required

Select, combine, and export
geographic boundaries in seconds.

A browser-based tool for selecting, merging, and exporting boundaries from any geographic dataset.

Open Studio GeoFlow
GeoJSON Shapefile Paste to select Merge & union Simplify Buffer Color by field
Live Studio
Select Features
0 selected
List
Paste
No file loaded
Saved Sets
0 of 0
Click:
0 Selected
Toggle — click to select or deselect
Selection Summary
Selected
0
features
Total
0
in dataset
Area
—
sq km
Export Options
Merge type
Simplify0%
Export
0
selected
0
total
Scope
Format
Attribute Table
Buffer Selection
Expand or shrink selected features. Negative = shrink.
Confirm Delete
of 4
Workflow

From raw dataset to clean export

Four steps. No GIS expertise needed.

01

Import dataset

Drop in a GeoJSON or Shapefile. Any projection, any number of features.

02

Select boundaries

Click on the map, paste a list of codes, or use the search filter.

03

Clean & combine

Merge, remove holes, simplify geometry, or buffer outward.

04

Export anywhere

GeoJSON, WKT, or CSV. Separate or unioned.

Capabilities

Everything you need. Nothing you don't.

Built for analysts — not cartographers.

Paste to select

Paste ZIP codes, FIPS codes, or names. Field detected automatically.

Merge & union

Combine any selection into a single topology-safe polygon.

Color by field

Choropleth coloring by any attribute — regions, categories, tiers.

Buffer boundaries

Expand or shrink any selection — miles, km, or meters.

Simplify geometry

Reduce file size without destroying shape.

Multi-format export

GeoJSON, WKT, CSV, JSON. Download in one click.

GeoEco.studio

Part of a connected ecosystem

One account. All tools.

GeoFlow
Convert between every geospatial format in seconds.
geoflow.studio
GeoBoundary here
Select, merge, and export boundaries from any dataset.
GeoLookup
Look up any ZIP, FIPS, or place and get geometry instantly.
geolookup.studio
GeoEco
One account, all tools, shared projects across the suite.
geoeco.studio