OSINT journalist Henk van Ess launches Geo Whisperer, a free before/after satellite imagery verification tool

On September 18, OSINT investigative journalist Henk van Ess launched Geo Whisperer Beta (geowhisperer.org), a free, no-signup tool that compresses location research—traditionally a slow, error-prone manual task of stitching together multiple satellite archives—into roughly 30 seconds, helping expose staged or misattributed locations.

Confirmed

• Free and registration-free: enter any location, coordinates, a map link, or drag in a GPS-tagged photo; archived imagery is listed within seconds and a before/after comparison is produced in about 30 seconds
• Imagery is pulled automatically from archives of providers such as Maxar and Esri, loading one image before and one after the event, with manual fine-tuning of image and date selection
• The comparison runs in two steps: a model-free mechanical check first (photos from two dates, resolution, time gap, etc.), then an AI pass describing what actually changed—what disappeared, what was built—generating a short cited report and flagging possible false positives
• Typical use cases include disaster/event verification: automatically retrieving pre- and post-event imagery

Why it matters

• The author notes that traditional location research requires manually stitching multiple satellite imagery archives, which is slow and error-prone under deadline pressure; the tool shortens this to about 30 seconds
• For OSINT and fact-checking practitioners, a fast, citation-backed tool that also flags uncertainty can significantly cut manual comparison cost and error rates

2026-09-18 ~ 2026-09-18 · 6 related posts

• [source] Geo Whisperer Beta: type an address, get AI-checked before/after satellite imagery for geo-verification — henkvaness · 2026-09-18
• Why Geo Whisperer exists: stitching satellite archives by hand is slow and error-prone — henkvaness · 2026-09-18
• [source] Geo Whisperer auto-pulls Maxar and Esri satellite archives with manually tunable before/after pairs — henkvaness · 2026-09-18
• Tool fetches before/after satellite images by address and flags real changes vs false alarms — henkvaness · 2026-09-18
• [source] GeoWhisperer Beta compares satellite imagery to reveal what changed on the ground in ~30 seconds — henkvaness · 2026-09-18

1 near-duplicate retellings: henkvaness