Library and Archives Canada
Symbol of the Government of Canada

Institutional links

Digital Initiatives at LAC

Digitization

Internal Digitization Standards

The following table contains the standards for resolution and bit depth that LAC typically uses in digitization projects. The material is organized by type of source material being digitized. These standards are guidelines rather than rules; the actual settings used in a specific project may vary depending on the condition of the material and the intended use of the digital images. In every case, the objective is to have a master image which is a faithful reproduction of the original document, and an access version in which all the essential informational value of the original is readable.

  Master Copy Access Copy
Books 300 dpi
8-bit colour (sometimes bitonal or greyscale)
JPG
300 dpi
bitonal (with some elements in greyscale or colour)
PDF with OCR
Serials 300 dpi
24-bit Adobe RGB (1998)
TIFF
72 dpi
colour or greyscale
JPG or PDF with OCR
Government publications and reports 300 dpi
24-bit Adobe RGB (1998)
TIFF
72 dpi
colour or greyscale
JPG or PDF with OCR (when possible)
Newspapers (microfilm) 150 dpi
8-bit greyscale
TIFF
150 dpi
greyscale
JPG or PDF with OCR
Theses (microfiche) 150 dpi
8-bit greyscale
TIFF
150 dpi
greyscale
JPG or PDF with OCR
Music recordings 96 kHz 24-bit
BWF
MP3
Spoken word recordings 96 kHz 24-bit
BWF
MP3
Film Not yet defined H.264
Video and TV broadcast NTSC encoding, Motion JPEG2000 at 50Mbs employing lossless reversible compression
4 audio channels,
8 or 10 bits video resolution
H.264
Maps 6000 to 8000 pixels (longside)
24-bit Adobe RGB (1998)
TIFF
600-1000 pixels (longside)
72 dpi
JPG, PDF or JPG 2000
Documentary art, photography, portraiture Varies depending on format and scanner, ranges 6000 to 8000 pixels (longside), between 300 dpi to 4000 dpi
24-bit Adobe RGB (1998)
TIFF
600-1000 pixels (longside)
72 dpi or 150 dpi
colour or greyscale
JPG