GeoWhispererBeta

Every place has a before.

Free · No signup · Movies deleted after 14 days · How it works

Type a place

or ·

Photos listed in seconds · comparison in about 30 seconds

Try it yourself

click any place to compare it

For geographic verification only. A photo you drop is read in your browser for its GPS position and never uploaded. Every change carries a grid cell and a sentence about both photos, so you can check it by eye before you write about it. How it works

Settings 7 of 7 checks on

These are the mechanical checks. They run on the photos and their records, with no model involved, before anything is read.

Different photos
Are the two dates really two images? Resolution mismatch
A sharper photo can make things look new Time gap
How far apart the two photos were taken Season
Leaves, snow and shadows differ by month Capture date
Does each photo have a date on record? Zoom range
Dated photos live at zoom 16 to 18 What stands here
Hospitals, schools, places of worship in view

How it works

Two passes. The first is mechanical: it lists every dated photo the archive holds for your spot, removes duplicates, and checks the pair you picked for the traps that fool the eye, with no model involved. The second is the reading: it goes through both photos cell by cell and says what is gone and what is new. Every change must name what is visible in the first photo and in the second; a change that does not is thrown away before it reaches you.

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Esri World Imagery Wayback

⇆

Before photoAfter photo

1 · Mechanical checksno model involved

Pick two photos to run the checks.

The two photos

Before photo

After photo

2 · What changed

One click: the changes are found, then you get a movie of them.

The reading covers the fixed square in the middle of the map and reports changes per grid cell. Takes 20 to 60 seconds.

Choose possible dates

Search a place to list its photos.

Sources and limits

Source. Esri World Imagery Wayback: every version of Esri's satellite basemap since February 2014, kept as dated releases. For your spot the tool asks which releases hold a different photo, then reads each photo's capture date, resolution and provider from Esri's records.

Zoom matters. The dated high-resolution photos live at zoom 16 to 18. Further out both sides can show the same coarse mosaic; further in there may be no archive photo.

Not every change is there. Esri updates a place when it has new imagery, sometimes years apart. The archive holds what Esri published, not every image a satellite took.

Credit. Imagery: Esri, Maxar, Earthstar Geographics and the GIS user community. Place search: Photon (komoot) and Nominatim, © OpenStreetMap contributors.