Convert PNG to ASCII Grid online for free — right in your browser. No upload, no sign-up, batch conversion, coordinate systems and attributes preserved.
Efficiently convert from PNG to ASC format
All processing is done locally in your browser
Output standard ASC format
Convert png to asc online for free — right in your browser. No upload, no sign-up, batch conversion, coordinate systems and attributes preserved.
PNG (Portable Network Graphics) is an image format supporting lossless compression and an Alpha transparency channel. In GIS, PNG is often paired with world files (.pgw) and projection files (.prj) to carry georeferencing — suitable for raster tiles and map graphics that need a transparent background.
ASCII Grid (also AAIGrid) is a plain-text raster format by ESRI. The file header contains geographic metadata (cols, rows, origin, cell size, NoData), and the body stores each cell value as a space-separated numeric matrix. Highly readable, often used for teaching and small-scale data exchange.
Converting PNG to ASCII Grid is one of the most common workflows in GIS. PNG data usually comes from desktop GIS software, government open-data portals, or data exchange with partners, while ASCII Grid is what modern tools, web maps, and platforms expect. This converter bridges the two: it reads your PNG files, keeps geometry and attributes intact, and writes clean ASCII Grid output — entirely in your browser, so your data never leaves your device.
No. The conversion runs entirely in your browser using WebAssembly — your files never leave your device.
Yes, completely free with no sign-up and no usage limits.
By default the output keeps the source coordinate system. If your PNG file uses a projected CRS (like UTM), you can search any EPSG coordinate system by keyword or code and reproject in one step. Note: output formats that require WGS84 by specification (KML, KMZ, GPX) always reproject to WGS84 automatically.
Yes — drop several PNG files at once and each one produces its own ASCII Grid output.
Upload your PNG file — drag and drop it onto the page, or browse from your device. You can add several files at once for batch conversion.
The conversion runs automatically in your browser. No upload, no server — your data stays on your device the entire time.
Download the ASCII Grid file. Each input produces its own output, ready to use in your GIS, web map, or archive.