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:

2022-06-09 09:38:15
[tag:github.com,2008:Grit::Commit/9cd83c80773821b1dee0a2a7d912dffbe8f26209 build(deps): bump mockito-core from 4.5.1 to 4.6.1 (#787)]
by dependabot https://github.com/dependabot
2022-06-09 09:38:02
[tag:github.com,2008:Grit::Commit/88649ff6773fc713a54ab62ba2551c88f9187712 build(deps): bump maven-scm-api from 1.12.2 to 1.13.0 (#788)]
by dependabot https://github.com/dependabot
2022-06-09 09:37:41
[tag:github.com,2008:Grit::Commit/f52a122972fdfbb65c40528ea931d4fa614cded2 build(deps): bump maven-surefire-report-plugin from 3.0.0-M6 to 3.0.0…]
by dependabot https://github.com/dependabot
2022-06-08 13:05:11
[tag:github.com,2008:Grit::Commit/7e1d2b5795fac45c6efb1f0773c57f7afa00ba39 build(deps): bump maven-project-info-reports-plugin from 3.1.2 to 3.3…]
by dependabot https://github.com/dependabot
2022-06-08 13:04:46
[tag:github.com,2008:Grit::Commit/7bc727105c8f2f97e1abf605ddfc9a4cb6c78e49 build(deps): bump maven-site-plugin from 3.10.0 to 3.12.0 (#768)]
by dependabot https://github.com/dependabot

About Formats[edit]

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