Formats

Each volume is published in three forms so you can choose between fidelity and file size.

TIFF master set

One uncompressed TIFF image per page, captured at high resolution with a colour reference target. The master set of a single volume commonly runs to several gigabytes and is packaged as numbered bundles.

Full-resolution PDF

All pages combined into one PDF with lossless image compression. Suitable for printing and close reading of plates and marginalia.

Reduced PDF

A smaller PDF with downsampled images, intended for reading on screen and on mobile devices.

Naming

Files follow the pattern author-shorttitle-year_part.ext, for example hooke-micrographia-1665_01.tif. Bundles of a master set are numbered in page order.

Checksums

Every bundle has a matching .sha256 file. After downloading, compare the checksum before unpacking; see verifying files.