▣ I have an image

Searchable archive of several 4chan boards (/pol/, /x/, /tv/ and others) with images, filterable by text, poster ID, country flag and date.

No-code proximity search over OpenStreetMap. Pick features you can see in an image (e.g. a park, a tram stop, a tower) and a distance, and it returns every place where they occur together.

Microsoft Bing's reverse image search. Upload or paste an image to find similar images, pages containing it, products and recognised entities. Lets you crop to sub-regions.

The reference command-line tool for reading, writing and stripping metadata (EXIF, IPTC, XMP, GPS, maker notes) in images, video, audio and documents. Supports hundreds of formats.

Face search engine focused on social media, news, mugshot and scammer-profile sources. Commonly used to vet romance-scam and catfish profiles.

Free browser-based photo forensics suite. Clone detection, error level analysis, noise analysis, magnifier, luminance gradient and metadata/geotag extraction. Processing happens client-side.

Online image forensics. Error Level Analysis (ELA), metadata, JPEG quality estimation and hidden-pixel checks, with a good set of tutorials on interpreting the results.

AI photo geolocation that predicts where an image was taken from its visual content alone (architecture, vegetation, road features) and returns candidate regions or coordinates.

3D globe with high-resolution satellite imagery, 3D buildings and terrain. The desktop Pro version adds historical imagery, which you need for change-over-time analysis.

Google's visual search. Matches objects, landmarks, text, products and visually similar images across Google's index; also does OCR and translation of text inside images.

Computes the visible horizon and viewshed from any point using elevation data, and labels the peaks you'd see. Helps confirm what's visible from a claimed location.

Browser extension (the "verification Swiss army knife") for checking images and video. Keyframe extraction, multi-engine reverse search, magnifier, metadata, forensic filters and video context lookups.

Open, crowdsourced street-level imagery (formerly OpenStreetCam). A useful second source when Street View and Mapillary coverage is thin.

Crowd size estimator. Draw the area a crowd occupies on a map, set a density per square metre, and get a defensible estimate of attendance.

Crowdsourced street-level imagery platform with billions of images, often covering roads, trails and countries that Google Street View doesn't reach. Filterable by capture date.

Web IDE for querying OpenStreetMap data. Find every place matching a feature combination (e.g. a church next to a rail line within 200 m of a river) to narrow down where a photo was taken.

3D mountain panoramas that label peaks for any viewpoint. Match a skyline in a photo to rendered terrain to geolocate outdoor images.

Facial recognition search engine that finds other photos of the same face across the open web. Free searches show blurred results; a subscription unlocks source links.

Crowdsourced database of photographed licence plates from dozens of countries. Search a plate to find photos of the vehicle, often with a location and date.

Bellingcat tool that takes an object's height, its shadow length and a date/time, and plots every location on Earth where that shadow ratio was possible.

Open-source desktop toolkit for digital image forensics. Bundles ELA, noise and JPEG ghost analysis, clone detection, PCA, metadata and many other analyses in one GUI.

Paid identity-verification search by name, email, phone, username, or image, aimed at romance-scam and catfish investigations.

Shows the sun's position, azimuth, elevation and shadow length for any location, date and time on a map. A core tool for chronolocating photos and video.

Exact-match reverse image search engine. Finds copies, crops and edits of an image, and can sort results by oldest first to trace an image back to its earliest appearance.

Yandex reverse image search. Historically the strongest engine for matching faces, buildings and scenery, especially for content from Russia, Eastern Europe and Central Asia.