Enabling "deep" links from WorldCat.org to your library catalog via the WorldCat Registry

If your library is eligible to have its WorldCat holdings exposed via WorldCat.org, partner sites such as Google, and WorldCat-based Web services, deep linking is the means by which Web users arrive directly at an item record in your online catalog.

Deep linking helps information seekers cross the "last mile," going from (1) WorldCat.org results for a keyword search to (2) the WorldCat.org detailed record for a specific title, including a list of nearby WorldCat libraries that hold the item, to (3) the local record in the selected library's OPAC.

Illustration: How deep linking helps Web searchers cross the 'last mile'

To ensure deep links to your individual catalog records, take a few minutes now to register the correct URL "syntaxes" (link structures) for your OPAC. These are maintained in the WorldCat Registry (http://www.worldcat.org/registry/institution/), a free Web tool that provides a single location from which any library can manage and distribute data that describes its institutional identity and services.

Keeping your link syntaxes current in the Registry allows Web users to reach your item records directly without having to repeat their search. If your library isn't yet eligible to have its holdings exposed, there's still value in maintaining catalog links in the Registry: OCLC syndicates this information across the Web through other WorldCat-based Web services such as xISBN and LibX. Also note that keeping your WorldCat Registry profile up-to-date can significantly shorten the amount of time needed to implement WorldCat Local—the localized version of WorldCat.org—at your institution.

How to access the WorldCat Registry in OCLC Service Configuration

Settings for the WorldCat Registry are maintained in OCLC Service Configuration. You must have a WorldCat account ("My WorldCat” account on WorldCat.org, “My Account” on WebJunction®, WorldCat Registry™ account, or an OCLC Online Service Center account) to access OCLC Service Configuration. And you must be authorized to an institution to make changes. For more information, please see the Introduction section of the OCLC Service Configuration Guide.

To locate your institution's WorldCat Registry profile, use the Search function under WorldCat Registry in OCLC Service Configuration. (For more information, please see the WorldCat Registry section of the OCLC Service Configuration Guide).

How to register deep-link syntaxes in the WorldCat Registry

  • Once you are signed in to OCLC Service Configuration and have been authorized to manage your profile, click Online Catalog under WorldCat Registry.

    Illustration: Online Catalog screen
  • Use the Suggest Links feature to generate your deep links. This feature automatically suggests URL syntaxes for many vendors and online catalog products.
    1. From a separate browser window, search your library's Web catalog for any held item.
    2. Go to the item record page for that title and copy the page's URL from the browser Location box.
    3. Return to the Registry's Online Catalog screen and paste that URL into the suggestion field
    4. Click Suggest Links.
    5. The Registry will pre-fill one or more of the linking syntax fields on the Online Catalog screen, including your ILS vendor, with values based on the URL you entered.
  • Test each of the suggested links. Click Test next to each suggested URL syntax. The link will open a new window, and load the proposed URL syntax with a preset ISBN, ISSN or OCLC Number appended to the end of the URL string. (In each case, OCLC has selected a standard number that represents a widely held resource.)

    A successful test should display your ILS interface and, within it, your local record for the test item. (If you do not hold the item, whatever message or interface facility your ILS employs for "record not found" should be displayed.)
  1. Problems with suggested links?

    If the Registry's suggestion feature cannot generate deep-link syntaxes based on your input URL, or your test links do not correctly display your ILS, you will need to manually construct URL syntaxes using the information below.

    You can also contact  OCLC support or your OPAC vendor for assistance.
  • When you have successfully tested the URL, fill in any additional information on the Edit Online Catalog screen appropriate for your institution.
  • Click the "Save Changes" button to preserve your changes.

Deep links from the WorldCat.org interface to individual catalog records in your OPAC will be functional on the next business day.

Manually determine your deep-linking URL syntax by vendor

A deep link's "syntax" is the basic structure of the link, focusing on where standard identifier information about the searched item (ISBN, ISSN or OCLC Number) is embedded within the URL. The table below shows common ILS vendors and the syntax of their deep-link URLs.

In each URL listed, bold text indicates the component of the URL that you replace with the base URL for your OPAC (e.g. "catalog.mylibrary.org"). Bold italicized text may need to be changed depending on your local configuration. (Important notes on some systems' URL structures are in the footnotes below.)

Vendor URL Syntax
Aleph http://library_opac_baseURL/F/?func=findb&local_base=uli02&
find_code=WSB&request= (see footnote below) 
Endeavor (Voyager) http://library_opac_baseURL/cgi-bin/Pwebrecon.cgi?DB=local&
CNT=25&HIST=1&BOOL1=as+a+phrase&FLD1=ISBN+(ISBN)&SAB1= (see footnote below) 
EOS GLAS http://library_opac_baseURL/GLASOPAC/Search/AdvancedSearch.asp?
EOS Q-Series / EOS.Web http://library_opac_baseURL/WEBOPAC/search/AdvancedSearch.asp?
GIS Information Systems For Polaris 3.0:

For Polaris 3.1:
type= Keyword&loc=FullDisplay&action=dash&SessionOrgID=1

For Polaris 3.2:

Innovative http://library_opac_baseURL/search/i= (see footnote below) 
Dynix (iPac) http://library_opac_baseURL/ipac20/ipac.jsp?index=ISBN&term= (see footnote below) 
Koha http://library_opac_baseURL/cgi-bin/koha/opac-searchresults.pl?isbn=
OLIB http://library_opac_baseURL?isxn=
Pica http://library_opac_baseURLhttp://ppwww.pica.nl/oclc_opc_link/oclc_opc_link.php?HILN=2&OCLCNum=
Sirsi (WebCat) http://library_opac_baseURL/uhtbin/cgisirsi/x/0/5/?searchdata1= (see footnote below) 
Sirsi / DRA http://library_opac_baseURL/web2/tramp2.exe/do_authority_search/guest?SETTING_KEY=
English&location_group_filter=all&servers=1home&index=(&query= (see footnote below) 
SunRise http://library_opac_baseURL/client_name/start.do?Query=540= (see footnote below) 
SydneyPlus http://library_opac_baseURL/cgi/swebsch.exe?sort=til&sortType=asc&spfield=isbn&
thesfld=false&lang=&ini=splusweb&uid=public&idck=&eid=&text= (see footnote below) 
Talis (Prism) http://library_opac_baseURL/TalisPrism/doSearch.do?searchType=advSearch&st1=
TLC http://library_opac_baseURL/TLCScripts/interpac.dll?Browse&Config=PSL&SearchType=3&
SearchField=4096&SearchData= (see footnote below) 

Table footnotes


The func parameter on some systems may require find-b instead of findb. The name of the local_base parameter may vary by library. Replace the find_code parameter WSB with ISBN for ISBN, ISSN for ISSN, or 035 for OCLC Number. A second known format is:


(Variations on the find parameter here are 020 for ISBN, 022 for ISSN, and 035 for OCLC Number ).

Endeavor (Voyager)

Listed above is the URL structure for ISBN. For ISSN, replace both instances of ISBN with ISSN. A different URL structure exists for OCLC Number:




Replace the closing i= with o= for OCLC Number.

Dynix (iPac)

Replace the index parameter ISBN with ISSN for ISSN and either UTIL, OCLC, or CNTRL for OCLC Number. Another variation is to use ISBNEX, ISSNEX and UTILEX, respectively, as the index terms. A third variation is .BN and .SN, with no known value for OCLC Number. On shared catalogs, an additional parameter &profile= is often used where the code that follows the equals sign indicates which library you are searching.


There are many known variations. Three common variations are:




with the last variation used for Windows NT-based OPACs. See the tip below about session identifiers.


Listed above is the URL structure for ISBN. For ISSN, the left parenthesis following index= changes to a right parenthesis, as in index=). A second known format is:




(Variations on the index parameter here are ss for ISSN ). A third known format is:



(Variations on the index parameter here are sn for ISSN, and index=%5e for OCLC Number ).


Listed above is the URL structure for ISBN. For ISSN, replace Query=540= with Query=543=.


Listed above is the URL structure for ISBN. For ISSN, use:




Listed above is the URL structure for ISBN. For ISSN, the SearchField parameter becomes 8192. In some systems, the CONFIG parameter may change to PAC.

Tips on deep link construction

  • Deep links should be constructed so that the ISSN, ISBN or OCLC number is at the end of the URL string.
  • Deep links cannot include semicolons (;) or carats (^)—they will cause links to break, even though they will seem to work correctly when tested.
  • Deep links cannot include a unique session identifier. A session ID is a device for tracking a specific user's visit to a Web site which expires after a preset time of inactivity; it often appears as a long, random string of letters and/or numbers. Sirsi catalog links almost always have a session ID value, so be sure to remove it when constructing your syntax.

Need help?

Note that older or newer versions of some OPAC software may require modifications to the URLs above. For assistance on deep-link syntax, contact OCLC support or your OPAC vendor.