Extension:Proofread Page

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Proofread Page

Release status:Extension status stable

ImplementationTemplate:Extension#type Page action, ContentHandler, Tag, API, Database
DescriptionTemplate:Extension#description The Proofread Page extension can render a book either as a column of OCR text beside a column of scanned images, or broken into its logical organization (such as chapters or poems) using transclusion.
Author(s)Template:Extension#username ThomasV (original author)
Tpt (current maintainer)
Latest versionTemplate:Extension#version continuous updates
MediaWikiTemplate:Extension#mediawiki current master
PHPTemplate:Extension#php 5.3+
Database changesTemplate:Extension#needs-updatephp Yes
LicenseTemplate:Extension#license GNU General Public License 2.0 or later
ExampleTemplate:Extension#example s:Index:Wind in the Willows (1913).djvu
NamespaceTemplate:Extension#namespace Page, Index


Added rightsTemplate:Extension#rights


Hooks usedTemplate:Extension#hook

Translate the Proofread Page extension if it is available at translatewiki.net

Check usage and version matrix.


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The Proofread Page extension can render a book either as a column of OCR text beside a column of scanned images, or broken into its logical organization (such as chapters or poems) using transclusion.

The extension is intended to allow easy comparison of text to the original and allow rendering of a text in several ways without duplicating data. Since the pages are not in the main namespace, they are not included in the statistical count of text units.

The extension is installed on all Wikisource wikis. For the syntax, see s:mul:Wikisource:ProofreadPage. It is also used on Wikilivres.

Requirements and recommendations[edit]



  1. Install LabeledSectionTransclusion (not required but strongly recommended)
  2. Download the files from Git or download a snapshot (select your version of MediaWiki) and place the files under $IP/extensions/ProofreadPage.
  3. Add to the end of LocalSettings.php:
    require_once "$IP/extensions/ProofreadPage/ProofreadPage.php";
  4. Add the required tables to the database; on the command line, enter:
    php maintenance/update.php
    (Note: Your designated database user needs to have CREATE rights on your MediaWiki database.)
  5. Installation can now be verified through Special:Version on your wiki


The extension links directly to image thumbnails which often don't exist. You must catch 404 errors and generate the missing thumbnails. You can do this with any one of these solutions:

  • Set an Apache RewriteRule in .htaccess to thumb.php for missing thumbnails:
        RewriteEngine On
        RewriteCond %{REQUEST_FILENAME} !-f
        RewriteCond %{REQUEST_FILENAME} !-d
        RewriteRule ^/w/images/thumb/[0-9a-f]/[0-9a-f][0-9a-f]/([^/]+)/page([0-9]+)-?([0-9]+)px-.*$ /w/thumb.php?f=$1&p=$2&w=$3 [L,QSA]
  • or set the Apache 404 handler to Wikimedia's thumb-handler. This is a general-purpose 404 handler with Wikimedia-specific code, not simply a thumbnail generator.
        ErrorDocument 404 /w/extensions/upload-scripts/404.php
  • For MediaWiki >= 1.20, you can simply redirect to thumb_handler.php:
        RewriteEngine On
        RewriteCond %{REQUEST_FILENAME} !-f
        RewriteCond %{REQUEST_FILENAME} !-d
        RewriteRule ^/w/images/thumb/[0-9a-f]/[0-9a-f][0-9a-f]/([^/]+)/page([0-9]+)-?([0-9]+)px-.*$ /w/thumb_handler.php [L,QSA]
  • Or in apache2.conf :
        ErrorDocument 404 /w/thumb_handler.php

WARNING: There is an .htaccess file in the images directory that may interfere with any .htaccess rules you install.


ProofreadPage create by default two custom namespaces named "Page" and "Index" in English with respectively ids 250 and 252.

Their names are translated if your wiki use an other language. Full list.

You can customize their name or their id: Create namespaces by hand and set their ids in LocalSettings.php using $wgProofreadPageNamespaceIds global. You will do something like:

define( 'NS_PROOFREAD_PAGE', 250);
define( 'NS_PROOFREAD_PAGE_TALK', 251);
define( 'NS_PROOFREAD_INDEX', 252);
define( 'NS_PROOFREAD_INDEX_TALK', 253);
$wgExtraNamespaces[NS_PROOFREAD_PAGE] = 'Page';
$wgExtraNamespaces[NS_PROOFREAD_PAGE_TALK] = 'Page_talk';
$wgExtraNamespaces[NS_PROOFREAD_INDEX] = 'Index';
$wgExtraNamespaces[NS_PROOFREAD_INDEX_TALK] = 'Index_talk';
$wgProofreadPageNamespaceIds = array(
    'index' => NS_PROOFREAD_INDEX,
    'page' => NS_PROOFREAD_PAGE


Configuration of index namespace[edit]

The configuration is a JSON array of properties. Here is the structure of a property in the array, all the parameters are optional, the default value are set:

  "ID": { //id of the metadata (first parameter of proofreadpage_index_attributes)
    "type": "string", //the property type (for compatibility reasons the values have not to be of this type). Possibles values: string, number, page. If set, the newly set values should be valid according to the type (e.g. for a number a valid number, for a page an existing wiki page...)
    "size": 1, //only for the type string : number of lines of the input (third parameter of proofreadpage_index_attributes)
    "values":  {"a":"A", "b":"B","c":"C", "d":"D"}, //an array values : label that list the possible values (for compatibility reasons the stored values have not to be one of these)
    "default": "", //the default value
    "header": false, //add the property to Mediawiki:Proofreadpage_header_template template
    "label": "ID", //the label in the form (second parameter of proofreadpage_index_attributes)
    "help": "", //a short help text
    "delimiter": [], //list of delimiters between two part of values. By example ["; ", " and "] for strings like "J. M. Dent; E. P. Dutton and A. D. Robert"
    "data": "" //proofreadpage's metadata type that the property is equivalent to

The data parameter can have for value: "type", "language", "title", "author", "translator", "illustrator", "editor", "school", "year", "publisher", "place" or "progress".


Creating your first page (example with DjVu)[edit]

  • Before following these steps ensure you have followed the instructions in Using DjVu with MediaWiki.
  • (when and in which namespace is the djvu file itself uploaded?)
  • Create a page in the "Page" namespace (or the internationalized name if you use an not-English wiki). For example if your namespace is 'Page' create Page:Carroll - Alice's Adventures in Wonderland.djvu
  • Create the corresponding file for this page commons:File:Carroll - Alice's Adventures in Wonderland.djvu (or set Manual:$wgUseInstantCommons to true).
  • Create the index page Index:Carroll - Alice's Adventures in Wonderland.djvu
    • Insert the tag <pagelist/> in the Pages field to visualize the page list
  • To edit page 5 of the book navigate to 'Page:Carroll - Alice's Adventures in Wonderland/5' and click edit


This extension introduces the following tags: <pages> and <pagelist>.


Since gerrit:28904, the extension has an OAI-PMH API for index pages. This API is implemented in a new special page Special:ProofreadIndexOai using a basic OAI-PMH protocol with Simple Dublin Core (oai_dc) and Qualified Dublin Core (prp_qdc). This repository provides the data stored in index pages. Example in oldwikisource. It is based on MediaWiki:Proofreadpage_index_data_config (see Configuration of index namespace section), using especially "data" and "type" configuration entries.

Sets based on MediaWiki categories can be configured in Mediawiki:Proofreadpage_index_oai_sets that contain a JSON array like:

  "test": { //spec of the set ie its ID
    "name": "Test", //The set name
    "category": "tests_list", //The category to use, without the "Category:" prefix
    "description": "A test set." //Description of the set, optional

See also[edit]

Language:Project:Language policy English  • français