You could simply add a par2 file but the default setting makes it pretty big. I just tried on an 876 kB Word file. And I got a bunch of par files totaling 1158 kB. The man page says it'll correct up to 100 errors.
You could replicate the Word file twice, using 1752 kB, and it'll correct up to ≈7 million one-bit errors as long as there is at most one error at three equivalent bit offsets.
You could simply add a par2 file but the default setting makes it pretty big. I just tried on an 876 kB Word file. And I got a bunch of par files totaling 1158 kB. The man page says it'll correct up to 100 errors.
You could replicate the Word file twice, using 1752 kB, and it'll correct up to ≈7 million one-bit errors as long as there is at most one error at three equivalent bit offsets.
And that is why for error correction, the number of error it is guaranteed to always correct is a pretty important metric too!
How well do par2 files handle insertion errors?
100 errors in an 876kB file would be about an 0.0012% errror rate. You are going to need another level of ECC before that.