Free ArduPilot log viewer
Open an ArduPilot .bin log or a .tlog telemetry log and see the flight on a map, replay it, fly it in 3D, read the charts and download a PDF report. Logs are read in your browser, with no signup and nothing to install.
Drop a flight log here
or choose one from your computer or phone
DJI .txt · PX4 .ulg · ArduPilot .bin and .tlog · Autel · Parrot .json
See the flight, not just the graphs
Mission Planner plots every message in the log, which is what you want for tuning. This viewer shows the flight itself, the way a chief pilot or a client wants to see it.
Overview
The flight path on a map with duration, distance, top speed, highest altitude and battery use, plus events such as takeoff, peak altitude and low battery.
Replay
Play the flight back over satellite imagery with live height, speed, heading, battery and satellite readouts, and a timeline of flight modes.
3D view
Follow the drone over 3D terrain, orbit around it, or ride along from the cockpit.
Image studio
Make a clean picture of the flight path for a client report or a post, with your choice of map, angle and info card.
Charts
Altitude, speed, battery and orientation over the whole flight, all moving with one playhead.
Export
Download a PDF flight report, every reading as a spreadsheet for Excel or Google Sheets, or the full processed log.
The two ArduPilot logs and where to find them
ArduPilot keeps one log on the aircraft and one on the ground station. Both open here.
.bin DataFlash log
Written on the aircraft
The flight controller writes it to its SD card in APM/LOGS. Pull the card, or download it in Mission Planner from the DataFlash Logs tab. It holds everything at full rate: GPS, height, attitude, battery, flight modes, takeoff and landing.
.tlog telemetry log
Saved by the ground station
Mission Planner and QGroundControl save one on the laptop every time they connect to the aircraft, by default under Documents > Mission Planner > logs and Documents > QGroundControl > Telemetry. It holds what came down the radio link a few times a second, with gaps where the link dropped.
Which aircraft
Copter, Plane and QuadPlane
Multirotors, fixed wings and VTOL QuadPlanes all open, including the Inspired Flight IF800 and IF1200. Logs from rovers, boats and submarines are turned away, since there is no flight to show.
When an ArduPilot log will not open
The viewer tells you why instead of showing an empty map.
It came from the simulator
Logs from SITL and other simulators are recognized and turned away, so test runs on a laptop never pass for real flights.
The aircraft never took off
A log from a bench test, where the aircraft was armed but never left the ground, has no flight in it.
The .tlog holds more than one aircraft
If the ground station talked to several aircraft in one session, the viewer cannot tell which flight to show. Open the .bin from each aircraft instead.
It is over 300 MB
Logs open up to 300 MB. Bigger .bin files usually come from very long sessions with every log message turned on.
Your logs stay on your computer
ArduPilot logs are read inside your browser, and a log that opens never leaves your device. If a file cannot be opened, it is sent to us so we can add support for it, and it is scheduled to be deleted automatically after one day.
Questions
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Keep every ArduPilot flight in one logbook
DroneBundle saves each flight, files it to the right job, and keeps pilot hours and maintenance up to date, for ArduPilot aircraft alongside DJI, PX4, Autel and Parrot.
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