DROID (Digital Record Object Identification)

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DROID (Digital Record Object Identification) is a software tool developed to perform automated batch identification of file formats.
License:BSD License
Platforms:Java 6 Standard Edition
Input Formats:PREMIS (Preservation Metadata Implementation Strategies)
Function:File Format Identification,Metadata Extraction
Appears in COW:Creating a SIP from content downloaded from OneDrive (or other Cloud based source), Digital archiving workflow (high-level), LAC Pre-Ingest Workflow, Workflow for ingesting digitized books into a digital archive


DROID (Digital Record Object Identification) is a software tool developed to perform automated batch identification of file formats. DROID is designed to meet the fundamental requirement of any digital repository to be able to identify the precise format of all stored digital objects, and to link that identification to a central registry of technical information about that format and its dependencies.

DROID uses the PRONOM signature files to perform format identification. Like PRONOM, it was developed by the National Archives of the UK. Written in Java, XML.


The format information held in PRONOM is what powers DROID (Digital Record Object Identification). Both are maintained by the UK's National Archives.

DROID downloads the latest signature files from PRONOM, and those are used to drive the identification process. See the PRONOM release notes.

A number of other tools and registries have been based around the PRONOM data. These include:

Although the information and website are made freely available under the Open Government License, the underlying software engine that powers PRONOM is proprietary.

The PRONOM Web API[edit]

The website is oriented towards manual browsing, but note that each PRONOM registry entry as a permalink, like this:


and furthermore, by appending '.xml' to the URL for any entry, the data can be recovered as XML:


User Experiences[edit]

Development Activity[edit]

All development activity is visible on GitHub: http://github.com/digital-preservation/droid/commits

Release Feed[edit]

Below the last 3 release feeds:

2022-01-07 15:49:54
[tag:github.com,2008:Repository/4737996/droid-6.5.2 droid-6.5.2]
by sparkhi
2020-05-01 11:04:35
[tag:github.com,2008:Repository/4737996/droid-6.5 6.5 Release]
by jcharlet
2020-03-27 17:04:19
[tag:github.com,2008:Repository/4737996/droid-6.5-RC3 6.5 Release Candidate 3]
by jcharlet

Activity Feed[edit]

Below the last 5 commits:

2022-04-26 10:35:32
[tag:github.com,2008:Grit::Commit/788342625a53d9c3aad572a98a0cbd6ed9907ca3 Merge pull request #696 from adamretter/semver2]
by rhubner https://github.com/rhubner
2022-04-21 10:24:46
[tag:github.com,2008:Grit::Commit/917284f72eeaed51212e3e0fde5d813989bd3bbc Merge pull request #767 from digital-preservation/dependabot/maven/sp…]
by rhubner https://github.com/rhubner
2022-04-21 09:55:01
[tag:github.com,2008:Grit::Commit/c12c2eba3c54ab985df4321f8f0867e4bc9f83b3 build(deps): bump spring.version from 5.3.18 to 5.3.19]
by dependabot https://github.com/dependabot
2022-04-21 09:54:07
[tag:github.com,2008:Grit::Commit/48a25fcc3473e84d897012e7562dcc691c682f20 Merge pull request #765 from digital-preservation/dependabot/maven/co…]
by rhubner https://github.com/rhubner
2022-04-20 15:33:02
[tag:github.com,2008:Grit::Commit/d06b2ffebe825304650fb697947f20f487ada715 Merge pull request #759 from digital-preservation/dependabot/maven/cx…]
by rhubner https://github.com/rhubner

About Formats[edit]

DROID do only read the format itself, not the spesification as such