Repair a Corrupted FIT File

A crashed upload or a dropped connection can leave a FIT file truncated or unreadable. Drop it below and we'll recover everything that's still readable into a clean file — entirely in your browser, free.

Drop your FIT file here

We'll recover everything readable and hand back a clean FIT file.

We check the file

Your FIT file's header, CRC, and every message are inspected for corruption or truncation.

We recover what's readable

Everything decoded before the point of corruption is kept — nothing readable is thrown away.

You get a clean file back

The recovered data is re-encoded into a fresh, valid FIT file, ready to upload anywhere.