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diff --git a/www/wiki/extensions/UploadWizard/resources/mw.QuickTitleChecker.js b/www/wiki/extensions/UploadWizard/resources/mw.QuickTitleChecker.js
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+/**
+ * Does some local checking of a filename.
+ * If you want more specific filename checks (such as bad words, other blacklisted stuff) use the TitleBlacklist API.
+ *
+ * These checks are ignored when the TitleBlacklist API is available, since presumably they should be configured there instead, where it's
+ * possible to update them easily and higher-quality error messages are available.
+ *
+ * This is an incomplete rendering of some of the meta.wikimedia.org and commons.wikimedia.org blacklist as they existed on 2011-05-05, and
+ * ignores cases that are irrelevant to uploading new media images.
+ *   - all regexes are case INsensitive by default
+ *   - namespaces and File: prefix are removed since everything we upload is under File: anyway
+ *   - noedit, moveonly, repuload is irrelevant
+ *   - we can't check autoconfirmed-ness of users here, so we ignore it
+ *   - Javascript doesn't have a standard way to access unicode character properties in regexes, so \p{PROPERTY}, \P{PROPERTY}, and [[:PROPERTY:]] have been changed when possible
+ *     or the associated regex removed
+*/
+( function ( mw, $ ) {
+
+	mw.QuickTitleChecker = {};
+
+	mw.QuickTitleChecker.regexSets = {
+
+		invalid: [
+			/[\u00A0\u1680\u180E\u2000-\u200B\u2028\u2029\u202F\u205F\u3000]/, // NBSP and other unusual spaces
+			/[\u202A-\u202E]/, // BiDi overrides
+			// eslint-disable-next-line no-control-regex
+			/[\x00-\x1f]/, // Control characters
+			/\uFEFF/, // Byte order mark
+			/\u00AD/, // Soft-hyphen
+			/[\uD800-\uDFFF\uE000-\uF8FF\uFFF0-\uFFFF]/, // Surrogates, Private Use Area and Specials, including the Replacement Character U+FFFD
+			/[^\0-\uFFFF]/, //  Very few characters outside the Basic Multilingual Plane are useful in titles
+			/''/
+		],
+
+		// note lack of extension, since we test title without extension.
+		senselessimagename: [
+			/^DCP[\d\s]+$/i, //  Kodak
+			/^DSC.[\d\s]+$/i, //  [[w:Design rule for Camera File system]] (Nikon, Fuji, Polaroid)
+			/^MVC-?[\d\s]+$/i, //  Sony Mavica
+			/^P[\dA-F][\d\s]+$/, //  Olympus, Kodak
+			/^I?MG[P_]?[\d\s]+$/, //  Canon, Pentax
+			/^1\d+-\d+(_IMG)?$/, //  Canon
+			/^(IM|EX)[\d\s]+$/, //  HP Photosmart
+			/^DC[\d\s]+[SML]$/, //  Kodak
+			/^PIC[T_]?[\d\s]+$/, //  Minolta
+			/^PANA[\d\s]+$/, //  Panasonic
+			/^DUW[\d\s]+$/, //  some mobile phones
+			/^CIMG[\d\s]+$/, //  Casio
+			/^JD[\d\s]+$/, //  Jenoptik
+			/^SDC[\d\s]+$/, //  Samsung
+			/^DVC[\d\s]+$/, //  DoCoMo
+			/^SANY[\d\s]+$/ //  Sanyo
+		],
+
+		thumbnail: [
+			/^\d+px-.*/
+		],
+
+		extension: [
+			/\.(jpe?g|png|gif|svg|ogg|ogv|oga)$/
+		]
+
+	};
+
+	/**
+	 * Check title for validity, without relying on TitleBlacklist extension or API requests.
+	 *
+	 * @param {string} title
+	 * @return {string[]} Array of error codes; if it's empty, the title is acceptable.
+	 *   Possible error codes are 'invalid', 'senselessimagename', 'thumbnail', 'extension'.
+	 */
+	mw.QuickTitleChecker.checkTitle = function ( title ) {
+		var errors = [];
+		$.each( mw.QuickTitleChecker.regexSets, function ( setName, regexes ) {
+			$.each( regexes, function ( i, regex ) {
+				if ( title.match( regex ) ) {
+					errors.push( setName );
+				}
+			} );
+		} );
+		return errors;
+	};
+
+}( mediaWiki, jQuery ) );