IIIF Image API Validator

pip install iiif-validator==1.0.5


IIIF Validator

https://travis-ci.org/IIIF/image-validator.svg?branch=master https://coveralls.io/repos/github/IIIF/image-validator/badge.svg?branch=master

This validator supports the same validations that are available on the IIIF website at http://iiif.io/api/image/validator/.


Installation from pypi

The following should install scripts, library, and the necessary dependencies:

pip install iiif-validator

Manual installation

Installation from source code <https://github.com/IIIF/image-validator> can de done with:

python setup.py install

which should install scripts, library, and the necessary dependencies. Note that setup.py includes directives to pin certain libraries to particular versions for compatibility.

The python-magic module requires libmagic which, on a mac, one can install with:

brew install libmagic

Command line validator, iiif-validate.py

Then for an image served at http://localhost:8000/prefix/image_id the validator can be run with:

iiif-validate.py -s localhost:8000 -p prefix -i image_id --version=2.0 -v

or similar to validate server with the test image. Use iiif-validate -h for parameter details.

Use with Travis CI

To install dependencies for this code the following lines must be present in the install: section of .travis.yml:

  - sudo apt-get update
  - sudo apt-get install libmagic-dev
  - pip install iiif_validator

and then a single validation can be added to the commands under the script: section of .travis.yml. For example, to test a server running with base URI http://localhost:8000/prefix with image image_id1 at version 1.1, level 1, one might use:

  - iiif-validate.py -s localhost:8000 -p prefix -i image_id1 --version=1.1 --level 1 --quiet

The iiif-validate.py script returns 0 exit code on success, non-zero on failure, in order to work easily with Travis CI.

Running the validator server, iiif-validator.py

The primary installation of the validator server is on the IIIF website at http://iiif.io/api/image/validator/.

Stand-alone server

The validator server runs at http://localhost:8080/ by default, the URI path is the test name and then the query parameters give the details of the server and image to be tested. The URI pattern is:


As an example, if the test server <https://pypi.python.org/pypi/iiif> is installed and run locally:

easy_install iiif

which will set up a server at http://localhost:8000/ and write the log of accesses to STDOUT. The one can run validation tests against this with requests like http://localhost:8080/info_json?server=localhost:8000&prefix=/2.0_pil_none&identifier=67352ccc-d1b0-11e1-89ae-279075081939.png&version=2.0 which tests the info.json response and gives JSON output (pretty formatted here):

  "test": "info_json",
  "status": "success",
  "tests": ["required-field: width", "required-field: height", "type-is-int: height", "type-is-int: width", "required-field: @id", "type-is-uri: @id", "@id is correct URI", "required-field: @context", "correct-context", "required-field: protocol", "correct-protocol", "required-field: profile", "is-list", "profile-compliance", "is-list", "is-object", "required-field: scaleFactors", "required-field: width", "type-is-int: width"],
  "url": ["http://localhost:8000/2.0_pil_none/67352ccc-d1b0-11e1-89ae-279075081939.png/info.json"],
  "label": "Check Image Information"

and http://localhost:8080/rot_mirror?server=localhost:8000&prefix=/2.0_pil_none&identifier=67352ccc-d1b0-11e1-89ae-279075081939.png&version=2.0 which tests mirroring and will give JSON output (again pretty formatted):

  "test": "rot_mirror",
  "status": "success",
  "tests": ["9,0:True", "0,9:True"],
  "url": ["http://localhost:8000/2.0_pil_none/67352ccc-d1b0-11e1-89ae-279075081939.png/full/full/!0/default.jpg"],
  "label": "Mirroring"

Validator server under WSGI

need docs here

Running with Vagrant

For ease of development and local testing, you can provision a virtual machine using Vagrant. To start Vagrant, ssh in, and run the validator on a site:

vagrant up
vagrant ssh
cd /vagrant
./iiif-validate.py -h
./iiif-validate.py --scheme=https -s iiif.lib.ncsu.edu -p iiif --level=2 -i 67352ccc-d1b0-11e1-89ae-279075081939

In addition, the Vagrant configuration runs the validator as a WSGI application using mod_wsgi and Apache httpd, accessible both from with the VM as well as the host machine at http://localhost:8080/.

Editing this README

This README is in reStructuredText and not gfm because that is what pypi will render. An editor like http://rst.ninjs.org/ is useful for editing/checking interactively.


Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

See LICENSE.txt.

Data included with this software, such as the test image files in the html directory, may be freely reused under CC0