Export & Share

Everything here lives in the sidebar's Download and Snapshot section. In historical mode (no terrain source, no contour layer) the section shrinks to just Snapshot / Copy / Share plus the historical batch export — the DEM and Contours buttons only make sense with a terrain source loaded.

Snapshot & Copy

• Snapshot — saves the composited map view to disk as a JPEG. In 2D view mode, a matching .jgw world file is saved alongside it (and the filename is tagged -epsg4326), so the image drops into GIS software already georeferenced. 3D and globe views get the plain image only — a perspective render has no single affine georeferencing.
• Copy — the same capture, copied straight to the clipboard for pasting into chats, slides, or issues.

DEM GeoTIFF export

DEM GeoTiff exports the current viewport's elevation data as a single-band 32-bit-float GeoTIFF (WGS 84) — real elevations in meters, not the RGB-packed tiles the renderer consumes. Two export engines, chosen by the DTM Export without Titiler toggle in Streaming & Storage Settings:

• Client-side (toggle on) — the browser range-reads and mosaics the source's tiles/COG directly, bypassing Titiler's server-side size cap. Supports COG, Terrain-RGB, and Terrarium sources — including a local COG file no server could reach. Shows a live progress bar, and a Cancel affordance appears (hover the exporting button) once an export has run long enough to be worth cancelling.
• Titiler (toggle off) — the source's tile URL is wrapped in a GDAL WMS descriptor and handed to the Titiler endpoint's /cog/bbox route, which mosaics it server-side; the app then decodes the RGB packing back into real elevations before saving.

The Max Download Resolution (px) field right below the buttons caps the output width/height for both paths. If the source's tile pyramid runs out of zoom over the selected area, the export still saves — at the best resolution available — with a warning explaining the shortfall.

Contour export

Contours exports the contour lines currently rendered in the viewport as a GeoJSON file. Segments that were only cut apart by tile boundaries are stitched back into continuous lines before download. Because it reads rendered features, the Contours & GeoGrid visualization mode (with the contour-lines checkbox on) must be active — the button is disabled otherwise. It's viewport-only by design: pan/zoom to frame the area you want, then export.

Export Multi (Historical)

Export Historical GeoTiffs opens a batch-export dialog: one RGB GeoTIFF per export target × historical source × capture date in a picked range, each cropped to its target's own extent, bundled into a single .zip.

• Export target — either the current viewport (one extent, nothing needs drawing) or Per-Feature: one target per drawn feature, optionally filtered to a single Drawing layer. Per-feature targets get configurable padding — meters around points, percent around lines/polygons.
• Sources — ESRI Wayback, NASA HLS (Harmonized Landsat Sentinel-2), Google Earth Historical, EOX Sentinel-2 Cloudless, Bing, and Planet Monthly (only listed once a Planet API key is set). Each contributes its real capture dates at the target's location within the chosen date range; Bing has no date archive, so it contributes exactly one current capture regardless of range. Targets/sources with no capture in range are reported as skipped, not failed.
• Target resolution sets the pixel size per exported extent (the source's own pyramid may cap it lower).
• Include gdal_translate script — adds one .bat per target with a gdal_translate command per capture, so the same extents can be re-fetched outside the browser at full native resolution. Google Earth Historical has no public tile URL (the app resolves it internally), so its entries are REM-commented rather than included.

Share

Share opens a modal that shares the current page URL — since every viz mode, source, and camera setting lives in the URL, the link alone reproduces your exact view. A preset blurb introducing the app is prepended as the post text. Platform tiles open each network's composer: X/Twitter, Bluesky, Mastodon (via a share page that lets you pick your instance), LinkedIn, Threads, Reddit. Clicking a tile also captures a screenshot and copies it to your clipboard automatically, so you can paste it (Ctrl+V / ⌘V) into the composer before publishing. Below the grid:

• Native Share (shown when the browser supports the Web Share API) — hands the URL, text, and the screenshot as an attached PNG to the OS share sheet, for apps like WhatsApp or Slack.
• Copy screenshot to clipboard and Copy URL to clipboard — the same two pieces, for doing it manually.

Related: the Open In launcher hands the current viewport off to other web viewers (River-REM, ESRI Wayback, Google Earth, …) instead of exporting anything.