www.wdl.org

Sandy BostianContent Manager, World Digital LibraryLibrary of Congresssbos@loc.gov

WDL Partner Meeting“Preparing Your Content”

Washington, DC

December 5, 2012

project.wdl.org

Before You Send It

Before You Send It

• Why does quality matter?

• Your images are what people see.

▪ Deep Zoom shows flaws.

▪ “Put your best foot forward.”

• Your metadata runs the display.

Before You Send It

• What is a digital object?• Media Files

• Metadata

• Relationships

• Behavior

Partner

WDL

Before You Send It: Media

• Color Management

• We don't have the originals, you do.

• Use a color reference target.

Before You Send It: Media

• Resolution

• Deep Zoom shows flaws

• 300 pixels per inch (ppi) or 118 pixels per cm

• 300 ppi resolution is at 100% of original

11 x 8 book should be 3300 pixels x 2400 pixels

Just because it says 300 in Photoshop doesn't

mean it's 300 at original size

Before You Send It: Media<

~~

~~

~~

~~

~~

~ 3

400

~~

~~

~~

~~

~~

~~

~>

< ~

~~

~ 1

700

~~

~~

>

400 pixels per inch in Photoshop

100%

50%(effectively 200 pixels per inch)

Before You Send It: Media

• Save the Pixels, Go Lossless!!

• File Format

JPEG is lossy

If you must use JPEGS, save at highest quality.

• Compression

LZW Preferred

No JPEG compression

Before You Send It: Media

• Skewing

• Cropping

• Check for Missing Files

Before You Send It: Media• Filenaming

• ASCII characters, preferably numbers

• Case matters (my_file vs. My_file vs. my_File)

• Three-letter file extensions (.tif NOT .tiff)

• Do not use these characters:< " * Space “

“> : ( |/ ? ) \

• Leading zeroes (0001.tif, 0002.tif…0010.tif not 1.tif, 2.tif…10.tif)

Before You Send It: Media

• File Corruption

• Checksums (md5)

• Bagger

desktop tool

• BagIt Library (BIL)

command line

tool

Before You Send It: Media

• Digital Identifiers

• Connect your media to your metadata

• Most standards have a place for this:

MARC: 856 $f

Dublin Core: <identifier>

• MODS: <identifier>

• WDL Spreadsheet: image_directory/filename

Before You Send It: Metadata

• Abbreviations

• Don't use them.

• If you must use them, send us a glossary defining the

abbreviation.

• Our translators are not librarians.

• Very time-consuming to track down what

abbreviations mean in non-English languages.

Before You Send It: Metadata

• Name Authority Files

• Do use them.

• Virtual International Authority File (http://viaf.org/)

• Creator Roles

• CE Dates

• URL

Before You Send It

• Copyright

• Work specific

• Author’s life + 70 years

• Please include justification

Transfer

• Physical Media:

• CD/DVD (prone to errors & corruption)

• Hard Drive (preferred)

• Network:

• We FTP/HTTP from your server

• You deliver to our new S3 dropbox

Transfer

• Contact us

• We'll send you S3 login

information

• You upload materials

• We download to our landing zone

• Unlimited space for uploading

• Your box isn't shared with others

• Many tools

• Command Line

• GUI

• S3 protocol vs. FTP

Transfer

Transfer

• Look for documentation of the new

transfer process and tools soon at:

project.wdl.org

www.wdl.org