DROID (Digital Record Object Identification)

Jump to navigation Jump to search

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:

2022-11-29 18:00:33
[tag:github.com,2008:Repository/4737996/droid-6.6.0-rc2 droid-6.6.0-rc2]
by sparkhi
2022-11-24 17:29:24
[tag:github.com,2008:Repository/4737996/droid-6.6.0-rc1 droid-6.6.0-rc1]
by sparkhi
2022-01-07 15:49:54
[tag:github.com,2008:Repository/4737996/droid-6.5.2 droid-6.5.2]
by sparkhi

Activity Feed[edit]

Below the last 5 commits:

2023-01-03 11:18:56
[tag:github.com,2008:Grit::Commit/0a9b384f9eea52ad0e1c044fba4b3ea13031b4dc 6.6.0 rc2 (#858)]
by sparkhi https://github.com/sparkhi
2022-12-08 16:11:53
[tag:github.com,2008:Grit::Commit/f1384e98e6444dc2982d8474760c54668c5b27f7 Ticket 574 overly pedantic checkstyle (#846)]
by paulwellsagilej https://github.com/paulwellsagilej
2022-11-29 17:28:01
[tag:github.com,2008:Grit::Commit/f3c42cedaf675098ba370a2241ffff867b488f79 documentation update for release (#839)]
by sparkhi https://github.com/sparkhi
2022-11-28 14:56:36
[tag:github.com,2008:Grit::Commit/9059a34526d69b1d0d9a84fc2de1602b7e6b5805 build(deps): bump jaxws-ri from 3.0.2 to 4.0.0 (#795)]
by dependabot https://github.com/dependabot
2022-11-28 12:14:24
[tag:github.com,2008:Grit::Commit/9c6dcb9146fbc5c2d1eba70b083342e96204430f build(deps): bump maven-assembly-plugin from 3.3.0 to 3.4.2 (#803)]
by dependabot https://github.com/dependabot

About Formats[edit]

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