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It's possible, but not easy. There are several orthographies for Ladino in Latin script, and any converter would have to be able to detect which orthography is being used. (Alternatively, I suppose, any page in lad-latn would have to identify its orthographic system.)

The opposite is much more difficult. The mapping from any given Latin orthography to Hebrew is essentially one-to-one, with the caveat that initial vowels need special handling, and so do certain final consonants. But the mapping from Hebrew orthography even to a single, preferred Latin orthography is not. For example, the same Hebrew-script vowel is used for both i and e, and a different Hebrew-script vowel is used for both o and u.