View US Census TIGER/Line (RT1) files online on an interactive map with feature inspection and the full attribute table. Files never leave your browser.
Zoom, pan and inspect geometries rendered on an OpenFreeMap base layer with automatic fit-to-bounds.
Search, filter and page through every field of your data with a full spreadsheet-style table.
Files are parsed locally with WebAssembly — nothing is uploaded to any server.
View US Census TIGER/Line (RT1) files online on an interactive map with feature inspection and the full attribute table. Files never leave your browser.
TIGER/RT1 Viewer is a free online GIS tool that performs spatial analysis and geospatial processing directly on your vector or raster data. Whether you are cleaning up a dataset before publishing a map, running a spatial analysis to answer a geographic question, or preparing inputs for a larger GIS workflow, TIGER/RT1 Viewer handles the operation in a single, predictable step. It targets the kind of everyday tasks every GIS practitioner repeats often — shaping geometries, cleaning attributes, clipping rasters, reprojecting layers, repairing invalid features — but without the overhead of launching desktop software or scripting a pipeline.
Typical use cases for TIGER/RT1 Viewer span the full geospatial workflow. Data preparation is the most common one: fixing, filtering, or reshaping data so it is ready for analysis or visualization. GIS analysts reach for it during spatial analysis, where one layer must be combined with another or transformed to reveal a pattern. Cartographers and web map publishers use it to prepare clean, lightweight layers for styling, while data managers rely on it for routine data cleaning — removing invalid geometries, standardizing fields, or extracting a subset of interest. Because it runs instantly in the browser, it is just as useful for a quick one-off check as it is for processing a batch of files.
This online TIGER/RT1 Viewer runs entirely in your browser, so your spatial data is never uploaded to a server. That makes it well suited to sensitive, confidential, or regulated datasets, and it means there is nothing to install and no account to create — the tool is completely free to use. Processing happens locally on your device, preserving full coordinate precision, the original coordinate reference system, and all associated attributes wherever the output format supports them. It accepts the most common geospatial formats — including Shapefile, GeoJSON, KML, GeoPackage, and GeoTIFF — and can process several files in a single batch, giving you a fast, private, and reliable way to get spatial analysis done without ever leaving your browser.
Upload your spatial data file — drag and drop it onto the page or pick it from your device. You can add several files at once to process them as a batch, and common formats such as Shapefile, GeoJSON, KML, GeoPackage, and GeoTIFF are all supported.
Configure the tool's parameters for your task — for example a buffer distance, a clip extent, a target projection, or the fields to extract. The exact options depend on the specific operation you are running.
Run TIGER/RT1 Viewer. The operation executes entirely in your browser, so your data is never sent to a server and no intermediate copy is stored anywhere.
Preview the result on the built-in map and, for vector data, in the attribute table, so you can verify that geometries, extents, and attributes look correct before exporting.
Download the processed file to your device. If you ran a batch, each input produces its own output, ready to load into your GIS, publish on a web map, or archive.
ATIGER/RT1 Viewer operates at full floating-point precision, so coordinates, pixel values, and attributes are processed without rounding or degradation. For operations that alter geometry — such as buffering, reprojection, or clipping — the result follows the same geodetic and topological rules used by standard GIS libraries, and the coordinate reference system is preserved or transformed accurately. Where an output format imposes its own limits on field names, data types, or precision, the tool applies sensible fallbacks and keeps as much of the original information as possible.
ATIGER/RT1 Viewer accepts the most common geospatial formats, including Shapefile (.shp, also inside .zip), GeoJSON, KML, GeoPackage, GPX, TopoJSON, FlatGeobuf, GML, CSV with coordinates, and DXF for vector data, plus GeoTIFF, ASCII Grid, JPEG, PNG, and other GDAL-readable formats for raster data. The accepted list depends on whether the operation works on vector or raster input, and you can drop in several files at once to process them as a batch.
ABecause every step runs locally in your browser, the practical limit is set by your device's available memory rather than a fixed server cap. Most everyday GIS files process without issue. Very large rasters or vector datasets with millions of features may take longer or be constrained by your machine's RAM, so for best performance it helps to close other heavy browser tabs when processing large inputs.
AYes. TIGER/RT1 Viewer supports batch processing — drop in several input files and it processes each one, producing a separate output for every input. This is useful when you need to apply the same operation to a folder of mixed inputs without repeating the workflow one file at a time, such as standardizing a set of layers or cleaning up an entire data collection.
ANo. All parsing, processing, and export happen directly in your browser, so your files never leave your device and nothing is stored on a server. This client-side processing makes TIGER/RT1 Viewer suitable for confidential, proprietary, or regulated geospatial datasets that cannot be uploaded to a third-party service, and it also means the tool keeps working even on a slow or offline connection.