GeoWhisperer

How it works

Two passes, and nothing you cannot check.

GeoWhisperer shows you dated satellite photos of one spot, checks the pair you pick for the traps that fool the eye, and then lets an AI say what changed. Every step shows its source.

1. The photos

You type a place, paste coordinates or a map link, or drop a photo with a GPS position. A photo you drop is read in your own browser and never uploaded.

The photos come from Esri World Imagery Wayback: every version of Esri's satellite basemap since February 2014, kept as dated releases. For your spot, the tool asks the archive which releases hold a different photo, compares the images themselves to remove duplicates, and reads each photo's capture date, resolution and provider from Esri's records. Most are from Maxar at 30 to 50 cm per pixel.

The dates are the days the satellite took the photo. The first time anyone looks at a place, reading them can take a minute; after that they are instant.

2. Pass one: mechanical checks

Before any model looks at the photos, seven checks run on the photos and their records: same photo, resolution mismatch, time gap, season, unknown date, zoom range and what stands here. They are explained one by one on the checks page. You can switch each off in Settings.

3. Pass two: the AI reading

The AI receives exactly what the map shows, the square in the middle, from both dates, with the same 3 by 3 grid drawn on each. It is told to describe the first photo cell by cell, then the second, then compare, and to test every difference against shadows, season, sharpness, viewing angle, colour balance and parked cars before calling it a change. It must never say why something happened or who did it.

4. What we throw away

Every change the AI reports must name what is visible in that cell in the first photo and in the second. A change that does not, or that points at a cell that does not exist, is deleted before it reaches you. You can see what was deleted under Thrown away in every result.

5. Evidence, movie and report

Click any change for its evidence card: the two dated crops, the AI's before and after sentences, the coordinates, and links to look further in Google Earth, Sentinel Hub, OpenStreetMap, Mapillary and a news search limited to the dates between the photos.

Make a movie turns the result into an MP4 with numbered markers. Download report gives a one-page PDF with both photos, the checks and every change. Both carry the credit line. Movies are deleted after 14 days.

6. What it cannot do