If the download source provides a checksum, you must verify it matches your file.
Finally, the most profound word: . Verification is the moment of trust. Once the library is downloaded, it must be checked. Is the file corrupt? Did a man-in-the-middle attack swap our clean 6x14 glyphs for malicious data? Has a bit-flip in transmission turned a harmless font map into a buffer overflow exploit? Verification typically involves comparing a cryptographic hash (like SHA-256) against a known good value. This step transforms the download from an act of faith into an act of knowledge. It says: "I have not merely acquired data; I have confirmed its integrity." font 6x14h library download verified