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:

2023-09-11 13:43:58
[tag:github.com,2008:Repository/4737996/droid-6.7.0 6.7.0 Release]
by sparkhi
2023-08-31 11:34:49
[tag:github.com,2008:Repository/4737996/droid-6.7.0-RC5 6.7.0 Release Candidate 5]
by sparkhi
2023-08-17 11:57:20
[tag:github.com,2008:Repository/4737996/droid-6.7.0-RC4 6.7.0 Release Candidate 4]
by sparkhi

Activity Feed[edit]

Below the last 5 commits:

2023-07-20 16:26:11
[tag:github.com,2008:Grit::Commit/ff766825e1b28d38bd76a6be270b4f25ffd8dfc1 About box (#987)]
by sparkhi https://github.com/sparkhi
2023-07-20 15:07:36
[tag:github.com,2008:Grit::Commit/e2c651526f71a24417def8b4cb89f6b430483b3d suppressed jdk 8 and 17 for macos on CI for the time being (#991)]
by sparkhi https://github.com/sparkhi
2023-06-22 15:46:44
[tag:github.com,2008:Grit::Commit/e84d2f63c8993d1896bb530a98bbc1007a3956da build(deps): bump maven-release-plugin from 2.5.3 to 3.0.1 (#976)]
by dependabot https://github.com/dependabot
2023-06-22 12:51:53
[tag:github.com,2008:Grit::Commit/d6d279ee8fc8507904bda360eae6b32d58cd2339 Prep for new release - signature files and skeleton suite (#984)]
by sparkhi https://github.com/sparkhi
2023-06-20 10:40:13
[tag:github.com,2008:Grit::Commit/d7a1b9b0e867a1a5213740e2dc688745317c8562 build(deps): bump maven-assembly-plugin from 3.4.2 to 3.6.0 (#970)]
by dependabot https://github.com/dependabot

About Formats[edit]

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