Flight Coverage Checker

Drop a flight's photos in and catch coverage gaps, overlap, exposure, motion blur and GSD problems before you leave the site — read in your browser, nothing uploaded.

1 · Photos from the flight

Drop photos or folders, or click to choose JPG straight off the drone. Drag several folders in at once, or use "Add a folder" and pick the parent folder (the card's DCIM or the job folder) to grab every subfolder in one go.

Read in your browser only. Nothing is uploaded.

2 · What you planned

Target GSD

Front overlap along each line

Side overlap between lines

Height above ground optional — override ALT

DJI ALT is height above takeoff. Set this if takeoff sat well above or below the field.

3 · Field boundary (optional)

Add KML or KMZ Checks for any part of the field no photo covers.

Nadir footprint Oblique footprint Uncovered gap Front overlap Side overlap Photo (OK) Overexposed Underexposed Motion blur Weak oblique (<3 views)

Findings

GSD and footprint are computed per photo as sensor width × height ÷ focal length, with sensor width derived from the 35 mm-equivalent focal length in the photo's metadata. Gaps are the areas inside the flown block (or your boundary) that no photo footprint covers. Altitude is height above takeoff unless you set a height above ground. Exposure is read from each photo's pixels (decoded small, in your browser): a frame is flagged overexposed when more than 5% of it is blown out, underexposed when it is very dark or its shadows are crushed. Flagged frames show as white (over) or black (under) dots on the map. Motion blur is estimated per photo as ground speed × shutter ÷ GSD (flagged above 2 px of smear), with speed from the drone's telemetry or GPS, and shows as rose rings on the map; blurred frames feed the re-fly generator. The Shutter tile shows the fastest-speed shutter you'd want next time (2 px × GSD ÷ max speed).

Flight Coverage Checker

Frames

Re-fly which issues?