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Web Accessibility Simple Checker

Wasc is a simple tool to check if a list of websites respect some accessibility criteria.

Installation

To install Wasc, run the following command from the command line:

pip install wasc

Running an analysis

Getting started is super easy from example files in directory data. You may try wasc data/example_websites.csv as follows:

$ wasc data/example_websites.csv                                                  
Use default checkers
Analysis of 2 websites...
100%|███████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:00<00:00,  2.33it/s]
Results:
{
    "Design Gouv": {
        "Doctype": "html",
        "Erreur": "",
        "Lang": "fr",
        "Lien Contact": "https://design.numerique.gouv.fr/contact",
        "Lien accessibilité": "https://design.numerique.gouv.fr/misc/accessibilite",
        "Mention accessibilité": "totalement conforme",
        "Mentions légales": "https://design.numerique.gouv.fr/misc/mentions-legales",
        "Taux d'accessibilité": "100%",
        "URL": "https://design.numerique.gouv.fr/"
    },
    "Example": {
        "Doctype": "html",
        "Erreur": "",
        "Lang": "échec",
        "Lien Contact": "échec",
        "Lien accessibilité": "échec",
        "Mention accessibilité": "échec",
        "Mentions légales": "échec",
        "Taux d'accessibilité": "échec",
        "URL": "http://example.com/"
    }
}
Completed

The output always contains Organisation, Erreur and URL.

Change output format

You can choose to print results in csv using -f csv option:

$ wasc data/example_websites.csv -f csv
Use default checkers
Analysis of 2 websites...
100%|███████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:00<00:00,  3.00it/s]
Results:
Organisation;URL;Erreur;Mention accessibilité;Lien accessibilité;Taux d'accessibilité;Doctype;Lang;Mentions légales;Lien Contact
Design Gouv;https://design.numerique.gouv.fr/;;totalement conforme;https://design.numerique.gouv.fr/misc/accessibilite;100%;html;fr;https://design.numerique.gouv.fr/misc/mentions-legales;https://design.numerique.gouv.fr/contact
Example;http://example.com/;;échec;échec;échec;html;échec;échec;échec

Completed

Change output

You may specify the output file using -o out.json option:

$ wasc data/example_websites.csv -o out.json
Use default checkers
Analysis of 2 websites...
100%|███████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:00<00:00,  4.30it/s]
Save results in out.json
Completed

List checkers

The option -l gives the list of checkers that are known by Wasc.

$ wasc data/example_websites.csv -l         
AccessChecker
AccessLinkChecker
AccessRateChecker
ContactLinkChecker
DoctypeChecker
FooterChecker
HeaderChecker
HeadLvlChecker
HeadNbChecker
LangChecker
LegalChecker

The list of available checkers is also given in page Checkers with their description.

Change checkers

To use your list of checkers, simply put the list in a file and give it through option -c. An example is given in data/checkers.csv.

In the CSV file, checkers are simply listed on a single column without header

AccessChecker
AccessLinkChecker
AccessRateChecker

Example of -c option:

$ wasc data/example_websites.csv -c data/checkers.csv 
Read checkers from data/checkers.csv
Analysis of 2 websites...
100%|███████████████████████████████████████████████████████████████████████████████████████████████| 2/2 [00:00<00:00,  5.45it/s]
Results:
{
    "Design Gouv": {
        "Erreur": "",
        "Lien accessibilité": "https://design.numerique.gouv.fr/misc/accessibilite",
        "Mention accessibilité": "totalement conforme",
        "Taux d'accessibilité": "100%",
        "URL": "https://design.numerique.gouv.fr/"
    },
    "Example": {
        "Erreur": "",
        "Lien accessibilité": "échec",
        "Mention accessibilité": "échec",
        "Taux d'accessibilité": "échec",
        "URL": "http://example.com/"
    }
}
Completed