diff --git a/src/common/downloader.cpp b/src/common/downloader.cpp
index 4890dec2..5f408845 100644
--- a/src/common/downloader.cpp
+++ b/src/common/downloader.cpp
@@ -53,7 +53,7 @@ Authorization::Authorization(const QString &username, const QString &password)
 {
 	QString concatenated = username + ":" + password;
 	QByteArray data = concatenated.toLocal8Bit().toBase64();
-	_header = "Basic " + data;
+	_header = HTTPHeader("Authorization", "Basic " + data);
 }
 
 NetworkTimeout::NetworkTimeout(int timeout, QNetworkReply *reply)
@@ -83,9 +83,10 @@ QNetworkAccessManager *Downloader::_manager = 0;
 int Downloader::_timeout = 30;
 bool Downloader::_http2 = true;
 
-bool Downloader::doDownload(const Download &dl, const Authorization &auth)
+bool Downloader::doDownload(const Download &dl, const QList<HTTPHeader> &headers)
 {
 	const QUrl &url = dl.url();
+	bool userAgent = false;
 
 	if (!url.isValid() || !(url.scheme() == QLatin1String("http")
 	  || url.scheme() == QLatin1String("https"))) {
@@ -103,9 +104,15 @@ bool Downloader::doDownload(const Download &dl, const Authorization &auth)
 	request.setAttribute(ATTR_REDIRECT_POLICY,
 	  QNetworkRequest::NoLessSafeRedirectPolicy);
 	request.setAttribute(ATTR_HTTP2_ALLOWED, QVariant(_http2));
-	request.setRawHeader("User-Agent", USER_AGENT);
-	if (!auth.isNull())
-		request.setRawHeader("Authorization", auth.header());
+
+	for (int i = 0; i < headers.size(); i++) {
+		const HTTPHeader &hdr = headers.at(i);
+		request.setRawHeader(hdr.key(), hdr.value());
+		if (hdr.key() == "User-Agent")
+			userAgent = true;
+	}
+	if (!userAgent)
+		request.setRawHeader("User-Agent", USER_AGENT);
 
 	QFile *file = new QFile(tmpName(dl.file()));
 	if (!file->open(QIODevice::WriteOnly)) {
@@ -183,12 +190,12 @@ void Downloader::downloadFinished(QNetworkReply *reply)
 }
 
 bool Downloader::get(const QList<Download> &list,
-  const Authorization &authorization)
+  const QList<HTTPHeader> &headers)
 {
 	bool finishEmitted = false;
 
 	for (int i = 0; i < list.count(); i++)
-		finishEmitted |= doDownload(list.at(i), authorization);
+		finishEmitted |= doDownload(list.at(i), headers);
 
 	return finishEmitted;
 }
diff --git a/src/common/downloader.h b/src/common/downloader.h
index f9d383e0..9f9d5b91 100644
--- a/src/common/downloader.h
+++ b/src/common/downloader.h
@@ -7,9 +7,12 @@
 #include <QUrl>
 #include <QList>
 #include <QHash>
+#include "common/kv.h"
 
 class QFile;
 
+typedef KV<QByteArray, QByteArray> HTTPHeader;
+
 class Download
 {
 public:
@@ -29,11 +32,11 @@ public:
 	Authorization() {}
 	Authorization(const QString &username, const QString &password);
 
-	bool isNull() const {return _header.isNull();}
-	const QByteArray &header() const {return _header;}
+	const HTTPHeader &header() const {return _header;}
+	bool isNull() const {return _header.key().isNull();}
 
 private:
-	QByteArray _header;
+	HTTPHeader _header;
 };
 
 class NetworkTimeout : public QObject
@@ -60,8 +63,7 @@ class Downloader : public QObject
 public:
 	Downloader(QObject *parent = 0) : QObject(parent) {}
 
-	bool get(const QList<Download> &list, const Authorization &authorization
-	  = Authorization());
+	bool get(const QList<Download> &list, const QList<HTTPHeader> &headers);
 	void clearErrors() {_errorDownloads.clear();}
 
 	static void setNetworkManager(QNetworkAccessManager *manager)
@@ -80,7 +82,7 @@ private:
 	class ReplyTimeout;
 
 	void insertError(const QUrl &url, QNetworkReply::NetworkError error);
-	bool doDownload(const Download &dl, const Authorization &auth);
+	bool doDownload(const Download &dl, const QList<HTTPHeader> &headers);
 	void downloadFinished(QNetworkReply *reply);
 	void readData(QNetworkReply *reply);
 
diff --git a/src/common/kv.h b/src/common/kv.h
index 71a42f80..86a4e6c5 100644
--- a/src/common/kv.h
+++ b/src/common/kv.h
@@ -4,6 +4,7 @@
 template <class KEY, class VALUE>
 class KV {
 public:
+	KV() {}
 	KV(const KEY &key, const VALUE &value) : _key(key), _value(value) {}
 
 	const KEY &key() const {return _key;}
diff --git a/src/data/demloader.cpp b/src/data/demloader.cpp
index 019ce7a0..02daf665 100644
--- a/src/data/demloader.cpp
+++ b/src/data/demloader.cpp
@@ -64,7 +64,7 @@ bool DEMLoader::loadTiles(const RectC &rect)
 		}
 	}
 
-	return _downloader->get(dl, _authorization);
+	return _downloader->get(dl, _headers);
 }
 
 bool DEMLoader::checkTiles(const RectC &rect) const
@@ -97,3 +97,11 @@ QString DEMLoader::tileFile(const DEM::Tile &tile) const
 {
 	return _dir.absoluteFilePath(tile.baseName());
 }
+
+void DEMLoader::setAuthorization(const Authorization &authorization)
+{
+	QList<HTTPHeader> headers;
+	if (!authorization.isNull())
+		headers.append(authorization.header());
+	_headers = headers;
+}
diff --git a/src/data/demloader.h b/src/data/demloader.h
index 9961b072..aae5073b 100644
--- a/src/data/demloader.h
+++ b/src/data/demloader.h
@@ -16,8 +16,7 @@ public:
 	DEMLoader(const QString &dir, QObject *parent = 0);
 
 	void setUrl(const QString &url) {_url = url;}
-	void setAuthorization(const Authorization &authorization)
-	  {_authorization = authorization;}
+	void setAuthorization(const Authorization &authorization);
 
 	bool loadTiles(const RectC &rect);
 	bool checkTiles(const RectC &rect) const;
@@ -34,7 +33,7 @@ private:
 	Downloader *_downloader;
 	QString _url;
 	QDir _dir;
-	Authorization _authorization;
+	QList<HTTPHeader> _headers;
 };
 
 #endif // DEMLOADER_H
diff --git a/src/map/mapsource.cpp b/src/map/mapsource.cpp
index d5dd8dba..5569611d 100644
--- a/src/map/mapsource.cpp
+++ b/src/map/mapsource.cpp
@@ -189,14 +189,22 @@ void MapSource::map(QXmlStreamReader &reader, Config &config)
 			else
 				config.dimensions.append(KV<QString, QString>
 				  (attr.value("id").toString(), reader.readElementText()));
+		} else if (reader.name() == QLatin1String("header")) {
+			QXmlStreamAttributes attr = reader.attributes();
+			if (!attr.hasAttribute("name"))
+				reader.raiseError("Missing header name");
+			else
+				config.headers.append(HTTPHeader(
+				  attr.value("name").toString().toLatin1(),
+				  reader.readElementText().toLatin1()));
 		} else if (reader.name() == QLatin1String("crs")) {
 			config.coordinateSystem = coordinateSystem(reader);
 			config.crs = reader.readElementText();
 		} else if (reader.name() == QLatin1String("authorization")) {
 			QXmlStreamAttributes attr = reader.attributes();
-			config.authorization = Authorization(
-			  attr.value("username").toString(),
+			Authorization auth(attr.value("username").toString(),
 			  attr.value("password").toString());
+			config.headers.append(auth.header());
 			reader.skipCurrentElement();
 		} else if (reader.name() == QLatin1String("tile")) {
 			tile(reader, config);
@@ -252,24 +260,24 @@ Map *MapSource::create(const QString &path, bool *isDir)
 		case WMTS:
 			return new WMTSMap(path, config.name, WMTS::Setup(config.url,
 			  config.layer, config.set, config.style, config.format, config.rest,
-			  config.coordinateSystem, config.dimensions, config.authorization),
+			  config.coordinateSystem, config.dimensions, config.headers),
 			  config.tileRatio);
 		case WMS:
 			return new WMSMap(path, config.name, WMS::Setup(config.url,
 			  config.layer, config.style, config.format, config.crs,
-			  config.coordinateSystem, config.dimensions, config.authorization),
+			  config.coordinateSystem, config.dimensions, config.headers),
 			  config.tileSize);
 		case TMS:
 			return new OnlineMap(path, config.name, config.url, config.zooms,
-			  config.bounds, config.tileRatio, config.authorization,
+			  config.bounds, config.tileRatio, config.headers,
 			  config.tileSize, config.scalable, true, false);
 		case OSM:
 			return new OnlineMap(path, config.name, config.url, config.zooms,
-			 config.bounds, config.tileRatio, config.authorization,
+			 config.bounds, config.tileRatio, config.headers,
 			 config.tileSize, config.scalable, false, false);
 		case QuadTiles:
 			return new OnlineMap(path, config.name, config.url, config.zooms,
-			 config.bounds, config.tileRatio, config.authorization,
+			 config.bounds, config.tileRatio, config.headers,
 			 config.tileSize, config.scalable, false, true);
 		default:
 			return new InvalidMap(path, "Invalid map type");
diff --git a/src/map/mapsource.h b/src/map/mapsource.h
index 1be457ee..97542a28 100644
--- a/src/map/mapsource.h
+++ b/src/map/mapsource.h
@@ -40,7 +40,7 @@ private:
 		CoordinateSystem coordinateSystem;
 		bool rest;
 		QList<KV<QString, QString> > dimensions;
-		Authorization authorization;
+		QList<HTTPHeader> headers;
 		qreal tileRatio;
 		int tileSize;
 		bool scalable;
diff --git a/src/map/onlinemap.cpp b/src/map/onlinemap.cpp
index 2746a414..e9841670 100644
--- a/src/map/onlinemap.cpp
+++ b/src/map/onlinemap.cpp
@@ -10,7 +10,7 @@
 
 OnlineMap::OnlineMap(const QString &fileName, const QString &name,
   const QString &url, const Range &zooms, const RectC &bounds, qreal tileRatio,
-  const Authorization &authorization, int tileSize, bool scalable, bool invertY,
+  const QList<HTTPHeader> &headers, int tileSize, bool scalable, bool invertY,
   bool quadTiles, QObject *parent)
     : Map(fileName, parent), _name(name), _zooms(zooms), _bounds(bounds),
 	_zoom(_zooms.max()), _tileSize(tileSize), _mapRatio(1.0),
@@ -19,7 +19,7 @@ OnlineMap::OnlineMap(const QString &fileName, const QString &name,
 	_tileLoader = new TileLoader(QDir(ProgramPaths::tilesDir()).filePath(_name),
 	  this);
 	_tileLoader->setUrl(url);
-	_tileLoader->setAuthorization(authorization);
+	_tileLoader->setHeaders(headers);
 	_tileLoader->setQuadTiles(quadTiles);
 	connect(_tileLoader, &TileLoader::finished, this, &OnlineMap::tilesLoaded);
 }
diff --git a/src/map/onlinemap.h b/src/map/onlinemap.h
index 6ac36fd0..9a45e781 100644
--- a/src/map/onlinemap.h
+++ b/src/map/onlinemap.h
@@ -13,7 +13,7 @@ class OnlineMap : public Map
 public:
 	OnlineMap(const QString &fileName, const QString &name, const QString &url,
 	  const Range &zooms, const RectC &bounds, qreal tileRatio,
-	  const Authorization &authorization, int tileSize, bool scalable,
+	  const QList<HTTPHeader> &headers, int tileSize, bool scalable,
 	  bool invertY, bool quadTiles, QObject *parent = 0);
 
 	QString name() const {return _name;}
diff --git a/src/map/tileloader.cpp b/src/map/tileloader.cpp
index ee91c69a..168d5943 100644
--- a/src/map/tileloader.cpp
+++ b/src/map/tileloader.cpp
@@ -88,7 +88,7 @@ void TileLoader::loadTilesAsync(QVector<FetchTile> &list)
 	}
 
 	if (!dl.empty())
-		_downloader->get(dl, _authorization);
+		_downloader->get(dl, _headers);
 
 	QFuture<void> future = QtConcurrent::map(imgs, &TileImage::load);
 	future.waitForFinished();
@@ -130,7 +130,7 @@ void TileLoader::loadTilesSync(QVector<FetchTile> &list)
 	if (!dl.empty()) {
 		QEventLoop wait;
 		connect(_downloader, &Downloader::finished, &wait, &QEventLoop::quit);
-		if (_downloader->get(dl, _authorization))
+		if (_downloader->get(dl, _headers))
 			wait.exec();
 
 		for (int i = 0; i < tl.size(); i++) {
diff --git a/src/map/tileloader.h b/src/map/tileloader.h
index 9daf9c57..86286b12 100644
--- a/src/map/tileloader.h
+++ b/src/map/tileloader.h
@@ -14,8 +14,7 @@ public:
 	TileLoader(const QString &dir, QObject *parent = 0);
 
 	void setUrl(const QString &url) {_url = url;}
-	void setAuthorization(const Authorization &authorization)
-	  {_authorization = authorization;}
+	void setHeaders(const QList<HTTPHeader> &headers) {_headers = headers;}
 	void setScaledSize(int size);
 	void setQuadTiles(bool quadTiles) {_quadTiles = quadTiles;}
 
@@ -33,7 +32,7 @@ private:
 	Downloader *_downloader;
 	QString _url;
 	QString _dir;
-	Authorization _authorization;
+	QList<HTTPHeader> _headers;
 	int _scaledSize;
 	bool _quadTiles;
 };
diff --git a/src/map/wms.cpp b/src/map/wms.cpp
index 1860015b..ba336abc 100644
--- a/src/map/wms.cpp
+++ b/src/map/wms.cpp
@@ -345,7 +345,7 @@ WMS::WMS(const QString &file, const WMS::Setup &setup, QObject *parent)
 
 		QList<Download> dl;
 		dl.append(Download(url, _path));
-		_valid = downloader->get(dl, _setup.authorization());
+		_valid = downloader->get(dl, _setup.headers());
 	} else {
 		_ready = true;
 		_valid = parseCapabilities();
diff --git a/src/map/wms.h b/src/map/wms.h
index 6bfc6828..3734909d 100644
--- a/src/map/wms.h
+++ b/src/map/wms.h
@@ -23,13 +23,13 @@ public:
 		Setup(const QString &url, const QString &layer, const QString &style,
 		  const QString &format, const QString &crs, const CoordinateSystem &cs,
 		  const QList<KV<QString, QString> > &dimensions,
-		  const Authorization &authorization = Authorization())
+		  const QList<HTTPHeader> &headers)
 			: _url(url), _layer(layer), _style(style), _format(format),
 			  _crs(crs), _cs(cs), _dimensions(dimensions),
-			  _authorization(authorization) {}
+			  _headers(headers) {}
 
 		const QString &url() const {return _url;}
-		const Authorization &authorization() const {return _authorization;}
+		const QList<HTTPHeader> &headers() const {return _headers;}
 		const QString &layer() const {return _layer;}
 		const QString &style() const {return _style;}
 		const QString &format() const {return _format;}
@@ -46,7 +46,7 @@ public:
 		QString _crs;
 		CoordinateSystem _cs;
 		QList<KV<QString, QString> > _dimensions;
-		Authorization _authorization;
+		QList<HTTPHeader> _headers;
 	};
 
 
diff --git a/src/map/wmsmap.cpp b/src/map/wmsmap.cpp
index 8147a73e..b8b6bce7 100644
--- a/src/map/wmsmap.cpp
+++ b/src/map/wmsmap.cpp
@@ -74,7 +74,7 @@ WMSMap::WMSMap(const QString &fileName, const QString &name,
 	QString tilesDir(QDir(ProgramPaths::tilesDir()).filePath(_name));
 
 	_tileLoader = new TileLoader(tilesDir, this);
-	_tileLoader->setAuthorization(setup.authorization());
+	_tileLoader->setHeaders(setup.headers());
 	connect(_tileLoader, &TileLoader::finished, this, &WMSMap::tilesLoaded);
 
 	_wms = new WMS(QDir(tilesDir).filePath(CAPABILITIES_FILE), setup, this);
diff --git a/src/map/wmts.cpp b/src/map/wmts.cpp
index 205f48c3..14f112bd 100644
--- a/src/map/wmts.cpp
+++ b/src/map/wmts.cpp
@@ -361,7 +361,7 @@ WMTS::WMTS(const QString &file, const WMTS::Setup &setup, QObject *parent)
 
 		QList<Download> dl;
 		dl.append(Download(url.toString(), _path));
-		_valid = downloader->get(dl, _setup.authorization());
+		_valid = downloader->get(dl, _setup.headers());
 	} else {
 		_ready = true;
 		_valid = init();
diff --git a/src/map/wmts.h b/src/map/wmts.h
index d0b88d6b..85597a5d 100644
--- a/src/map/wmts.h
+++ b/src/map/wmts.h
@@ -27,13 +27,13 @@ public:
 		  const QString &style, const QString &format, bool rest,
 		  const CoordinateSystem &cs,
 		  const QList<KV<QString, QString> > &dimensions,
-		  const Authorization &authorization = Authorization())
+		  const QList<HTTPHeader> &headers)
 			: _url(url), _layer(layer), _set(set), _style(style),
 			  _format(format), _rest(rest), _cs(cs), _dimensions(dimensions),
-			  _authorization(authorization) {}
+			  _headers(headers) {}
 
 		const QString &url() const {return _url;}
-		const Authorization &authorization() const {return _authorization;}
+		const QList<HTTPHeader> &headers() const {return _headers;}
 		const QString &layer() const {return _layer;}
 		const QString &set() const {return _set;}
 		const QString &style() const {return _style;}
@@ -52,7 +52,7 @@ public:
 		bool _rest;
 		CoordinateSystem _cs;
 		QList<KV<QString, QString> > _dimensions;
-		Authorization _authorization;
+		QList<HTTPHeader> _headers;
 	};
 
 	class Zoom
diff --git a/src/map/wmtsmap.cpp b/src/map/wmtsmap.cpp
index 1da2dd29..f01c82d8 100644
--- a/src/map/wmtsmap.cpp
+++ b/src/map/wmtsmap.cpp
@@ -20,7 +20,7 @@ WMTSMap::WMTSMap(const QString &fileName, const QString &name,
 	QString tilesDir(QDir(ProgramPaths::tilesDir()).filePath(_name));
 
 	_tileLoader = new TileLoader(tilesDir, this);
-	_tileLoader->setAuthorization(setup.authorization());
+	_tileLoader->setHeaders(setup.headers());
 	connect(_tileLoader, &TileLoader::finished, this, &WMTSMap::tilesLoaded);
 
 	_wmts = new WMTS(QDir(tilesDir).filePath(CAPABILITIES_FILE), setup, this);