diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0765ef0d..ae0aead7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+# Unreleased
+- Fixed extraction of `mangadex` manga with more than 100 chapters (#84)
+
 ## 1.3.5 - 2018-05-04
 - Added support for:
   - `smugmug` - https://www.smugmug.com/
diff --git a/gallery_dl/extractor/deviantart.py b/gallery_dl/extractor/deviantart.py
index aa117cc0..41641052 100644
--- a/gallery_dl/extractor/deviantart.py
+++ b/gallery_dl/extractor/deviantart.py
@@ -167,7 +167,7 @@ class DeviantartGalleryExtractor(DeviantartExtractor):
     subcategory = "gallery"
     archive_fmt = "g_{username}_{index}.{extension}"
 
-    pattern = [r"(?:https?://)?([^.]+)\.deviantart\.com"
+    pattern = [r"(?:https?://)?(?!www\.)([\w-]+)\.deviantart\.com"
                r"(?:/(?:gallery/?(?:\?catpath=/)?)?)?$"]
     test = [
         ("http://shimoda7.deviantart.com/gallery/", {
@@ -197,7 +197,7 @@ class DeviantartFolderExtractor(DeviantartExtractor):
     subcategory = "folder"
     directory_fmt = ["{category}", "{folder[owner]}", "{folder[title]}"]
     archive_fmt = "F_{folder[uuid]}_{index}.{extension}"
-    pattern = [r"(?:https?://)?([^.]+)\.deviantart\.com"
+    pattern = [r"(?:https?://)?(?!www\.)([\w-]+)\.deviantart\.com"
                r"/gallery/(\d+)/([^/?&#]+)"]
     test = [
         ("http://shimoda7.deviantart.com/gallery/722019/Miscellaneous", {
@@ -232,8 +232,8 @@ class DeviantartDeviationExtractor(DeviantartExtractor):
     """Extractor for single deviations"""
     subcategory = "deviation"
     archive_fmt = "{index}.{extension}"
-    pattern = [(r"(?:https?://)?([^.]+\.deviantart\.com/"
-                r"(?:art|journal)/[^/?&#]+-\d+)"),
+    pattern = [(r"(?:https?://)?(?!www\.)([\w-]+\.deviantart\.com"
+                r"/(?:art|journal)/[^/?&#]+-\d+)"),
                (r"(?:https?://)?(sta\.sh/[a-z0-9]+)")]
     test = [
         (("http://shimoda7.deviantart.com/art/"
@@ -276,7 +276,7 @@ class DeviantartFavoriteExtractor(DeviantartExtractor):
     subcategory = "favorite"
     directory_fmt = ["{category}", "{username}", "Favourites"]
     archive_fmt = "f_{username}_{index}.{extension}"
-    pattern = [r"(?:https?://)?([^.]+)\.deviantart\.com"
+    pattern = [r"(?:https?://)?(?!www\.)([\w-]+)\.deviantart\.com"
                r"/favourites/?(?:\?catpath=/)?$"]
     test = [
         ("http://h3813067.deviantart.com/favourites/", {
@@ -304,7 +304,7 @@ class DeviantartCollectionExtractor(DeviantartExtractor):
     directory_fmt = ["{category}", "{collection[owner]}",
                      "Favourites", "{collection[title]}"]
     archive_fmt = "C_{collection[uuid]}_{index}.{extension}"
-    pattern = [r"(?:https?://)?([^.]+)\.deviantart\.com"
+    pattern = [r"(?:https?://)?(?!www\.)([\w-]+)\.deviantart\.com"
                r"/favourites/(\d+)/([^/?&#]+)"]
     test = [(("https://pencilshadings.deviantart.com"
               "/favourites/70595441/3D-Favorites"), {
@@ -334,7 +334,7 @@ class DeviantartJournalExtractor(DeviantartExtractor):
     subcategory = "journal"
     directory_fmt = ["{category}", "{username}", "Journal"]
     archive_fmt = "j_{username}_{index}.{extension}"
-    pattern = [r"(?:https?://)?([^.]+)\.deviantart\.com"
+    pattern = [r"(?:https?://)?(?!www\.)([\w-]+)\.deviantart\.com"
                r"/(?:journal|blog)/?(?:\?catpath=/)?$"]
     test = [
         ("https://angrywhitewanker.deviantart.com/journal/", {
@@ -348,6 +348,50 @@ class DeviantartJournalExtractor(DeviantartExtractor):
         return self.api.browse_user_journals(self.user, self.offset)
 
 
+class DeviantartPopularExtractor(DeviantartExtractor):
+    """Extractor for popular deviations"""
+    subcategory = "popular"
+    directory_fmt = ["{category}", "Popular",
+                     "{popular[range]}", "{popular[search]}"]
+    archive_fmt = "P_{popular[range]}_{popular[search]}_{index}.{extension}"
+    pattern = [r"(?:https?://)?www\.deviantart\.com"
+               r"((?:/\w+)*)/(?:popular-([^/?&#]+))?/?(?:\?([^#]*))?"]
+    test = [
+        ("https://www.deviantart.com/popular-8-hours/?q=tree+house", {
+            "options": (("original", False),),
+        }),
+        ("https://www.deviantart.com/artisan/popular-all-time/?q=tree", None),
+        ("https://www.deviantart.com/?q=tree", None),
+        ("https://www.deviantart.com/", None),
+    ]
+
+    def __init__(self, match):
+        DeviantartExtractor.__init__(self)
+        self.search_term = self.time_range = self.category_path = None
+
+        path, trange, query = match.groups()
+        if path:
+            self.category_path = path.lstrip("/")
+        if trange:
+            self.time_range = trange.replace("-", "").replace("hours", "hr")
+        if query:
+            self.search_term = text.parse_query(query).get("q")
+
+        self.popular = {
+            "search": self.search_term or "",
+            "range": trange or "24-hours",
+            "path": self.category_path,
+        }
+
+    def deviations(self):
+        return self.api.browse_popular(
+            self.search_term, self.time_range, self.category_path, self.offset)
+
+    def prepare(self, deviation):
+        DeviantartExtractor.prepare(self, deviation)
+        deviation["popular"] = self.popular
+
+
 class DeviantartAPI():
     """Minimal interface for the deviantart API"""
     CLIENT_ID = "5388"
@@ -368,6 +412,15 @@ class DeviantartAPI():
         self.client_secret = extractor.config(
             "client-secret", self.CLIENT_SECRET)
 
+    def browse_popular(self, query=None, timerange=None,
+                       category_path=None, offset=0):
+        """Yield popular deviations"""
+        endpoint = "browse/popular"
+        params = {"q": query, "offset": offset, "limit": 120,
+                  "timerange": timerange, "category_path": category_path,
+                  "mature_content": self.mature}
+        return self._pagination(endpoint, params)
+
     def browse_user_journals(self, username, offset=0):
         """Yield all journal entries of a specific user"""
         endpoint = "browse/user/journals"
diff --git a/gallery_dl/extractor/imagebam.py b/gallery_dl/extractor/imagebam.py
index 90164d24..7e88eead 100644
--- a/gallery_dl/extractor/imagebam.py
+++ b/gallery_dl/extractor/imagebam.py
@@ -8,91 +8,103 @@
 
 """Extract images from http://www.imagebam.com/"""
 
-from .common import Extractor, AsynchronousExtractor, Message
+from .common import Extractor, Message
 from .. import text
 
 
-class ImagebamGalleryExtractor(AsynchronousExtractor):
-    """Extractor for image galleries from imagebam.com"""
+class ImagebamExtractor(Extractor):
+    """Base class for imagebam extractors"""
     category = "imagebam"
-    subcategory = "gallery"
-    directory_fmt = ["{category}", "{title} - {gallery_key}"]
-    filename_fmt = "{num:>03}-{name}.{extension}"
-    archive_fmt = "{gallery_key}_{image_id}"
-    pattern = [r"(?:https?://)?(?:www\.)?imagebam\.com/gallery/([^/]+)"]
-    test = [(("http://www.imagebam.com/"
-              "gallery/adz2y0f9574bjpmonaismyrhtjgvey4o"), {
-        "url": "fb01925129a1ff1941762eaa3a2783a66de6847f",
-        "keyword": "2541078f61ce50714715e21757176dd69126f804",
-        "content": "596e6bfa157f2c7169805d50075c2986549973a8",
-    })]
     root = "http://www.imagebam.com"
 
+    def get_image_data(self, page_url, data):
+        """Fill 'data' and return image URL"""
+        page = self.request(page_url).text
+        image_url = text.extract(page, 'property="og:image" content="', '"')[0]
+        data["extension"] = image_url.rpartition(".")[2]
+        data["image_key"] = page_url.rpartition("/")[2]
+        data["image_id"] = data["image_key"][6:]
+        return image_url
+
+
+class ImagebamGalleryExtractor(ImagebamExtractor):
+    """Extractor for image galleries from imagebam.com"""
+    subcategory = "gallery"
+    directory_fmt = ["{category}", "{title} - {gallery_key}"]
+    filename_fmt = "{num:>03}-{image_key}.{extension}"
+    archive_fmt = "{gallery_key}_{image_key}"
+    pattern = [r"(?:https?://)?(?:www\.)?imagebam\.com/gallery/([0-9a-z]+)"]
+    test = [
+        ("http://www.imagebam.com/gallery/adz2y0f9574bjpmonaismyrhtjgvey4o", {
+            "url": "fb01925129a1ff1941762eaa3a2783a66de6847f",
+            "keyword": "9e25b8827474ac93c54855e798d60aa3cbecbd7a",
+            "content": "596e6bfa157f2c7169805d50075c2986549973a8",
+        }),
+        ("http://www.imagebam.com/gallery/gsl8teckymt4vbvx1stjkyk37j70va2c", {
+            "url": "7d54178cecddfd46025cc9759f5b675fbb8f65af",
+            "keyword": "7d7db9664061132be50aa0d98e9602e98eb581ce",
+        }),
+    ]
+
     def __init__(self, match):
-        AsynchronousExtractor.__init__(self)
-        self.gkey = match.group(1)
+        ImagebamExtractor.__init__(self)
+        self.gallery_key = match.group(1)
 
     def items(self):
-        data, url = self.get_job_metadata()
+        url = "{}/gallery/{}".format(self.root, self.gallery_key)
+        page = text.extract(
+            self.request(url).text, "<fieldset>", "</fieldset>")[0]
+
+        data = self.get_metadata(page)
+        imgs = self.get_image_pages(page)
+        data["count"] = len(imgs)
+        data["gallery_key"] = self.gallery_key
+
         yield Message.Version, 1
         yield Message.Directory, data
-        data["num"] = 0
-        for image_url, image_id in self.get_images(url):
-            data["image_id"] = image_id
-            data["num"] += 1
-            text.nameext_from_url(image_url, data)
-            yield Message.Url, image_url, data.copy()
+        for data["num"], page_url in enumerate(imgs, 1):
+            image_url = self.get_image_data(page_url, data)
+            yield Message.Url, image_url, data
 
-    def get_job_metadata(self):
-        """Collect metadata for extractor-job"""
-        url = self.root + "/gallery/" + self.gkey
-        page = self.request(url, encoding="utf-8").text
-        data, pos = text.extract_all(page, (
-            (None       , "<img src='/img/icons/photos.png'", ""),
-            ("title"    , "'> ", " <"),
-            ("count"    , "'>", " images"),
-        ), values={"gallery_key": self.gkey})
-        url, pos = text.extract(
-            page, "<a href='http://www.imagebam.com", "'", pos)
-        return data, url
+    @staticmethod
+    def get_metadata(page):
+        """Return gallery metadata"""
+        return text.extract_all(page, (
+            ("title"      , "'> ", " <span "),
+            (None         , "'>", "</span>"),
+            ("description", ":#FCFCFC;'>", "</div>"),
+        ))[0]
 
-    def get_images(self, url):
-        """Yield all image-urls and -ids for a gallery"""
-        done = False
-        while not done:
-            page = self.request(self.root + url).text
-            pos = text.extract(
-                page, 'class="btn btn-default" title="Next">', ''
-            )[1]
-            if pos == 0:
-                done = True
-            else:
-                url, pos = text.extract(page, ' href="', '"', pos-70)
-            image_id , pos = text.extract(page, 'class="image" id="', '"', pos)
-            image_url, pos = text.extract(page, 'src="', '"', pos)
-            yield image_url, image_id
+    @staticmethod
+    def get_image_pages(page):
+        """Return a list of all image pages"""
+        return list(text.extract_iter(page, "<a href='", "'"))
 
 
-class ImagebamImageExtractor(Extractor):
+class ImagebamImageExtractor(ImagebamExtractor):
     """Extractor for single images from imagebam.com"""
-    category = "imagebam"
     subcategory = "image"
-    archive_fmt = "{token}"
-    pattern = [r"(?:https?://)?(?:www\.)?imagebam\.com/image/([0-9a-f]{15})"]
-    test = [("http://www.imagebam.com/image/94d56c502511890", {
-        "url": "b384893c35a01a09c58018db71ddc4cf2480be95",
-        "keyword": "1c7bc3f31ba248d65e085eb82d16f8e2156ec102",
-        "content": "0c8768055e4e20e7c7259608b67799171b691140",
-    })]
+    filename_fmt = "{image_key}.{extension}"
+    archive_fmt = "{image_key}"
+    pattern = [r"(?:https?://)?(?:\w+\.)?imagebam\.com"
+               r"/(?:image/|(?:[0-9a-f]{2}/){3})([0-9a-f]+)"]
+    test = [
+        ("http://www.imagebam.com/image/94d56c502511890", {
+            "url": "b384893c35a01a09c58018db71ddc4cf2480be95",
+            "keyword": "4263d4840007524129792b8587a562b5d20c2687",
+            "content": "0c8768055e4e20e7c7259608b67799171b691140",
+        }),
+        ("http://images3.imagebam.com/1d/8c/44/94d56c502511890.png", None),
+    ]
 
     def __init__(self, match):
-        Extractor.__init__(self)
-        self.token = match.group(1)
+        ImagebamExtractor.__init__(self)
+        self.image_key = match.group(1)
 
     def items(self):
-        page = self.request("http://www.imagebam.com/image/" + self.token).text
-        iurl = text.extract(page, 'property="og:image" content="', '"')[0]
-        data = text.nameext_from_url(iurl, {"token": self.token})
+        page_url = "{}/image/{}".format(self.root, self.image_key)
+        data = {}
+        image_url = self.get_image_data(page_url, data)
         yield Message.Version, 1
         yield Message.Directory, data
-        yield Message.Url, iurl, data
+        yield Message.Url, image_url, data
diff --git a/gallery_dl/extractor/imgur.py b/gallery_dl/extractor/imgur.py
index 621282e0..a3e332cb 100644
--- a/gallery_dl/extractor/imgur.py
+++ b/gallery_dl/extractor/imgur.py
@@ -118,7 +118,7 @@ class ImgurAlbumExtractor(ImgurExtractor):
     filename_fmt = "{category}_{album[hash]}_{num:>03}_{hash}.{extension}"
     archive_fmt = "{album[hash]}_{hash}"
     pattern = [r"(?:https?://)?(?:www\.|m\.)?imgur\.com"
-               r"/(?:a|gallery)/(\w{5})"]
+               r"/(?:a|gallery)/(\w{7}|\w{5})"]
     test = [
         ("https://imgur.com/a/TcBmP", {
             "url": "ce3552f550a5b5316bd9c7ae02e21e39f30c0563",
@@ -152,6 +152,9 @@ class ImgurAlbumExtractor(ImgurExtractor):
         ("https://imgur.com/gallery/eD9CT", {  # large album
             "url": "4ee94de31ff26be416271bc0b1ea27b9349c9937",
         }),
+        ("https://imgur.com/a/RhJXhVT/all", {  # 7 character album hash
+            "url": "695ef0c950023362a0163ee5041796300db76674",
+        }),
         ("https://imgur.com/a/TcBmQ", {
             "exception": exception.NotFoundError,
         }),
diff --git a/gallery_dl/extractor/komikcast.py b/gallery_dl/extractor/komikcast.py
index 9270fdef..b24c580c 100644
--- a/gallery_dl/extractor/komikcast.py
+++ b/gallery_dl/extractor/komikcast.py
@@ -91,8 +91,8 @@ class KomikcastMangaExtractor(KomikcastBase, MangaExtractor):
     """Extractor for manga from komikcast.com"""
     pattern = [r"(?:https?://)?(?:www\.)?(komikcast\.com/[^/?&#]+/?)$"]
     test = [("https://komikcast.com/tonari-no-kashiwagi-san/", {
-        "url": "ae862f22eb17fa97adf49222377ebe4412719771",
-        "keyword": "cd1ec571feacbc32e3b72c437d2e93e6b825be60",
+        "url": "c3c7a9233904d1c9e12dbb20911934af4b255ff8",
+        "keyword": "a4c7c24c87df41ff1d11da21e65df13d3a912691",
     })]
 
     def chapters(self, page):
diff --git a/gallery_dl/extractor/mangadex.py b/gallery_dl/extractor/mangadex.py
index c8776199..58841859 100644
--- a/gallery_dl/extractor/mangadex.py
+++ b/gallery_dl/extractor/mangadex.py
@@ -115,6 +115,9 @@ class MangadexMangaExtractor(MangadexExtractor, MangaExtractor):
                 "language": str,
             },
         }),
+        ("https://mangadex.org/manga/13318/dagashi-kashi/chapters/2/", {
+            "count": ">= 100",
+        }),
     ]
     scheme = "https"
     per_page = 100
@@ -165,4 +168,4 @@ class MangadexMangaExtractor(MangadexExtractor, MangaExtractor):
                 return results
 
             num += 1
-            page = self.request("{}/_/{}/".format(self.url, num)).text
+            page = self.request("{}/_/chapters/{}/".format(self.url, num)).text
diff --git a/gallery_dl/extractor/pinterest.py b/gallery_dl/extractor/pinterest.py
index a244cf9e..1583e03c 100644
--- a/gallery_dl/extractor/pinterest.py
+++ b/gallery_dl/extractor/pinterest.py
@@ -72,7 +72,7 @@ class PinterestBoardExtractor(PinterestExtractor):
             "url": "85911dfca313f3f7f48c2aa0bc684f539d1d80a6",
         }),
         ("https://www.pinterest.com/g1952848/test/", {
-            "exception": exception.NotFoundError,
+            "exception": exception.GalleryDLException,
         }),
     ]
 
@@ -161,7 +161,11 @@ class PinterestAPI():
 
         response = self.extractor.request(
             url, params=params, headers=self.HEADERS, fatal=False)
-        data = response.json()
+
+        try:
+            data = response.json()
+        except ValueError:
+            data = {}
 
         if 200 <= response.status_code < 400 and not response.history:
             return data
@@ -169,6 +173,7 @@ class PinterestAPI():
         if response.status_code == 404 or response.history:
             raise exception.NotFoundError(self.extractor.subcategory)
         self.extractor.log.error("API request failed")
+        self.extractor.log.debug("%s", response.text)
         raise exception.StopExtraction()
 
     def _pagination(self, resource, options):
diff --git a/gallery_dl/extractor/reddit.py b/gallery_dl/extractor/reddit.py
index 55f15f1d..6794b165 100644
--- a/gallery_dl/extractor/reddit.py
+++ b/gallery_dl/extractor/reddit.py
@@ -72,12 +72,15 @@ class RedditExtractor(Extractor):
 class RedditSubredditExtractor(RedditExtractor):
     """Extractor for images from subreddits on reddit.com"""
     subcategory = "subreddit"
-    pattern = [r"(?:https?://)?(?:m\.|www\.)?reddit\.com/r/([^/?&#]+)"
+    pattern = [r"(?:https?://)?(?:\w+\.)?reddit\.com/r/([^/?&#]+)"
                r"(/[a-z]+)?/?"
                r"(?:\?.*?(?:\bt=([a-z]+))?)?$"]
     test = [
         ("https://www.reddit.com/r/lavaporn/", None),
         ("https://www.reddit.com/r/lavaporn/top/?sort=top&t=month", None),
+        ("https://old.reddit.com/r/lavaporn/", None),
+        ("https://np.reddit.com/r/lavaporn/", None),
+        ("https://m.reddit.com/r/lavaporn/", None),
     ]
 
     def __init__(self, match):
@@ -94,7 +97,7 @@ class RedditSubmissionExtractor(RedditExtractor):
     """Extractor for images from a submission on reddit.com"""
     subcategory = "submission"
     pattern = [(r"(?:https?://)?(?:"
-                r"(?:m\.|www\.)?reddit\.com/r/[^/]+/comments|"
+                r"(?:\w+\.)?reddit\.com/r/[^/?&#]+/comments|"
                 r"redd\.it"
                 r")/([a-z0-9]+)")]
     test = [
@@ -102,6 +105,8 @@ class RedditSubmissionExtractor(RedditExtractor):
             "pattern": r"https?://i\.imgur\.com/AaAUCgy\.jpg",
             "count": 1,
         }),
+        ("https://old.reddit.com/r/lavaporn/comments/2a00np/", None),
+        ("https://np.reddit.com/r/lavaporn/comments/2a00np/", None),
         ("https://m.reddit.com/r/lavaporn/comments/2a00np/", None),
         ("https://redd.it/2a00np/", None),
     ]
diff --git a/gallery_dl/extractor/xvideos.py b/gallery_dl/extractor/xvideos.py
index 99d936a6..15b77b63 100644
--- a/gallery_dl/extractor/xvideos.py
+++ b/gallery_dl/extractor/xvideos.py
@@ -36,7 +36,7 @@ class XvideosGalleryExtractor(XvideosExtractor):
         (("https://www.xvideos.com/profiles"
           "/pervertedcouple/photos/751031/random_stuff"), {
             "url": "4f0d992e5dc39def2c3ac8e099d17bf09e76e3c7",
-            "keyword": "71d64a9b2ba7015850d3aed3fbcae1e7e0481515",
+            "keyword": "750d462802d56eead0fe06c4f453419396d2f944",
         }),
         ("https://www.xvideos.com/profiles/pervertedcouple/photos/751032/", {
             "exception": exception.NotFoundError,
diff --git a/test/test_results.py b/test/test_results.py
index 2e13ebea..90fc1b96 100644
--- a/test/test_results.py
+++ b/test/test_results.py
@@ -16,11 +16,13 @@ from gallery_dl import extractor, job, config, exception
 # these don't work on travis-ci
 TRAVIS_SKIP = {
     "exhentai", "kissmanga", "mangafox", "dynastyscans", "nijie",
-    "archivedmoe", "archiveofsins", "thebarchive", "sankaku", "idolcomplex",
+    "archivedmoe", "archiveofsins", "thebarchive", "fireden",
+    "sankaku", "idolcomplex",
 }
 
 # temporary issues, etc.
 BROKEN = {
+    "pixiv",  # /users/<id>/favorite_works API endpoint is gone
 }