Question 1

What are PAM files?

Accepted Answer

PAM (.pam) is Netpbm's Portable Arbitrary Map format. It stores a simple ASCII header and a raw binary raster. It can represent grayscale, RGB, RGBA, and other tuple types.

Question 2

Are my files uploaded to manuals.plus?

Accepted Answer

No. Drag & drop and Browse loads are decoded in your browser. If you load from a URL, your browser fetches that URL directly (subject to CORS).

Question 3

なぜ URL loading fail sometimes?

Accepted Answer

Browsers enforce CORS. The host serving the .pam must allow cross-origin requests (Access-Control-Allow-Origin).