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5. slub/dfgviewer

ActiveTypo3-cms-extension[Utility &amp; Helpers](/categories/utility)

slub/dfgviewer
==============

Remote resources navigator for digital libraries. Reads METS/MODS and METS/TEI via OAI-PMH.

v7.0.0(6mo ago)35509↓86.7%24[16 issues](https://github.com/slub/dfg-viewer/issues)[4 PRs](https://github.com/slub/dfg-viewer/pulls)GPL-3.0-or-laterPHPPHP 8.1 - 8.4CI failing

Since Jun 21Pushed 2w ago12 watchersCompare

[ Source](https://github.com/slub/dfg-viewer)[ Packagist](https://packagist.org/packages/slub/dfgviewer)[ Docs](https://github.com/slub/dfg-viewer)[ RSS](/packages/slub-dfgviewer/feed)WikiDiscussions master Synced yesterday

READMEChangelog (10)Dependencies (7)Versions (22)Used By (0)

DFG Viewer
==========

[](#dfg-viewer)

The DFG Viewer is a free browser web service for displaying digitized books from remote library repositories in a rich and dynamic environment. It has an [OAI-PMH interface](http://www.openarchives.org/OAI/openarchivesprotocol.html) for exchanging meta- and structural data in the [METS](http://www.loc.gov/standards/mets/) and [IIIF](https://iiif.io/technical-details/) formats.

As a result, users are provided with a uniform interface for viewing and interacting with digitized media. They can browse documents, view and download the individual digital representations (images and text) in various resolutions and use further enhanced options if the library provides additional data.

The DFG Viewer is based on the free CMS [TYPO3](https://typo3.org/) and the Digital Library Framework of [Kitodo.Presentation](https://github.com/kitodo/kitodo-presentation). It can be used free of charge by anyone interested. This can either be done via the web service operated by the [Saxon State and University Library Dresden](https://www.slub-dresden.de/) or by means of a local implementation. You can find comprehensive documentations, examples and useful tips regarding both application scenarios at the [project's home page](https://dfg-viewer.de/).

Older releases can be found on [Launchpad](https://launchpad.net/dfg-viewer).

The development of the DFG Viewer is predominantly funded by the [German Research Foundation](https://www.dfg.de/).

Credits
-------

[](#credits)

- [Google Fonts](https://fonts.google.com/specimen/Open+Sans) Open Sans
- [Highlight.js ](https://github.com/highlightjs/highlight.js/tree/10-stable) v. 10.7.2
- [jQuery](https://github.com/jquery/jquery/tree/3.6-stable) v. 3.6.0

Maintainer
----------

[](#maintainer)

If you have any questions or encounter any problems, please do not hesitate to contact us.

- [Beatrycze Volk](https://github.com/beatrycze-volk)

[![Codacy Badge](https://camo.githubusercontent.com/f5d2e353740cf6bc64daf25196bdec7bed45a41548d0ef3b5417e937cf1415b6/68747470733a2f2f6170692e636f646163792e636f6d2f70726f6a6563742f62616467652f47726164652f6235646664363937356431373464386138303333383235666236343062613763)](https://app.codacy.com/gh/slub/dfg-viewer?utm_source=github.com&utm_medium=referral&utm_content=slub/dfg-viewer&utm_campaign=Badge_Grade)

External Dependencies
---------------------

[](#external-dependencies)

This project includes code from the following external projects:

- [jQuery](https://jquery.com/) version 3.6.0
- [highlight.js](https://highlightjs.org/) version 10.7.2
- [Google Fonts](https://fonts.google.com/) (2020)

###  Health Score

58

—

FairBetter than 98% of packages

Maintenance74

Regular maintenance activity

Popularity30

Limited adoption so far

Community26

Small or concentrated contributor base

Maturity90

Battle-tested with a long release history

 Bus Factor2

2 contributors hold 50%+ of commits

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~166 days

Recently: every ~25 days

Total

18

Last Release

105d ago

Major Versions

v4.1.0 → v5.0.02019-11-18

v5.3.0 → v6.0.02024-01-22

v6.3.0 → v7.0.02025-12-10

6.3.x-dev → 7.x-dev2026-03-20

PHP version history (2 changes)v6.2.0PHP 7.4 - 8.3

v7.0.0PHP 8.1 - 8.4

### Community

Maintainers

![](https://www.gravatar.com/avatar/6d678dc279d542eb86b8b2c6aa8b10f74115b2dfcf143bd10e20b4e746764470?d=identicon)[slub](/maintainers/slub)

---

Top Contributors

[![markusweigelt](https://avatars.githubusercontent.com/u/3832618?v=4)](https://github.com/markusweigelt "markusweigelt (374 commits)")[![beatrycze-volk](https://avatars.githubusercontent.com/u/9614459?v=4)](https://github.com/beatrycze-volk "beatrycze-volk (289 commits)")[![sebastian-meyer](https://avatars.githubusercontent.com/u/1798167?v=4)](https://github.com/sebastian-meyer "sebastian-meyer (99 commits)")[![csidirop](https://avatars.githubusercontent.com/u/43964592?v=4)](https://github.com/csidirop "csidirop (33 commits)")[![stweil](https://avatars.githubusercontent.com/u/6734573?v=4)](https://github.com/stweil "stweil (30 commits)")[![dependabot[bot]](https://avatars.githubusercontent.com/in/29110?v=4)](https://github.com/dependabot[bot] "dependabot[bot] (17 commits)")[![gnuj](https://avatars.githubusercontent.com/u/4637952?v=4)](https://github.com/gnuj "gnuj (13 commits)")[![jacmendt](https://avatars.githubusercontent.com/u/5071511?v=4)](https://github.com/jacmendt "jacmendt (10 commits)")[![Erikmitk](https://avatars.githubusercontent.com/u/180686?v=4)](https://github.com/Erikmitk "Erikmitk (9 commits)")[![christopher-timm](https://avatars.githubusercontent.com/u/11059425?v=4)](https://github.com/christopher-timm "christopher-timm (5 commits)")[![chrizzor](https://avatars.githubusercontent.com/u/11059425?v=4)](https://github.com/chrizzor "chrizzor (5 commits)")[![BFallert](https://avatars.githubusercontent.com/u/4037984?v=4)](https://github.com/BFallert "BFallert (3 commits)")[![lutzhelm](https://avatars.githubusercontent.com/u/20013890?v=4)](https://github.com/lutzhelm "lutzhelm (3 commits)")[![haogatyp](https://avatars.githubusercontent.com/u/13765467?v=4)](https://github.com/haogatyp "haogatyp (1 commits)")[![fschoelzel](https://avatars.githubusercontent.com/u/142507449?v=4)](https://github.com/fschoelzel "fschoelzel (1 commits)")[![erik-konrad](https://avatars.githubusercontent.com/u/63040915?v=4)](https://github.com/erik-konrad "erik-konrad (1 commits)")

---

Tags

extensiontypo3dfgviewer

###  Code Quality

TestsPHPUnit

Static AnalysisPHPStan

Type Coverage Yes

### Embed Badge

![Health badge](/badges/slub-dfgviewer/health.svg)

```
[![Health](https://phpackages.com/badges/slub-dfgviewer/health.svg)](https://phpackages.com/packages/slub-dfgviewer)
```

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