diff --git a/swh/web/common/archive.py b/swh/web/common/archive.py
--- a/swh/web/common/archive.py
+++ b/swh/web/common/archive.py
@@ -8,6 +8,7 @@
 import os
 import re
 from typing import Any, Dict, Iterable, Iterator, List, Optional, Set, Tuple, Union
+from urllib.parse import urlparse
 
 from swh.model import hashutil
 from swh.model.identifiers import CONTENT, DIRECTORY, RELEASE, REVISION, SNAPSHOT
@@ -248,6 +249,22 @@
         # slash while the url in storage have it (e.g. Debian source package)
         else:
             origin_urls.append(f"{origin['url']}/")
+        try:
+            # handle case where the "://" character sequence was mangled into ":/"
+            parsed_url = urlparse(origin["url"])
+            if (
+                parsed_url.scheme
+                and not parsed_url.netloc
+                and f"{parsed_url.scheme}:/" in origin["url"]
+                and f"{parsed_url.scheme}://" not in origin["url"]
+            ):
+                origin_urls.append(
+                    origin["url"].replace(
+                        f"{parsed_url.scheme}:/", f"{parsed_url.scheme}://"
+                    )
+                )
+        except Exception:
+            pass
     origins = [o for o in storage.origin_get(origin_urls) if o is not None]
     if not origins:
         msg = "Origin with url %s not found!" % origin["url"]
diff --git a/swh/web/common/identifiers.py b/swh/web/common/identifiers.py
--- a/swh/web/common/identifiers.py
+++ b/swh/web/common/identifiers.py
@@ -116,7 +116,9 @@
             query_dict[k] = query_params[k]
 
     if "origin" in swhid_parsed.metadata:
-        query_dict["origin_url"] = unquote(swhid_parsed.metadata["origin"])
+        origin_url = unquote(swhid_parsed.metadata["origin"])
+        origin_url = archive.lookup_origin({"url": origin_url})["url"]
+        query_dict["origin_url"] = origin_url
 
     if "anchor" in swhid_parsed.metadata:
         anchor_swhid_parsed = get_swhid(swhid_parsed.metadata["anchor"])
diff --git a/swh/web/tests/browse/views/test_identifiers.py b/swh/web/tests/browse/views/test_identifiers.py
--- a/swh/web/tests/browse/views/test_identifiers.py
+++ b/swh/web/tests/browse/views/test_identifiers.py
@@ -9,6 +9,7 @@
 from hypothesis import given
 
 from swh.model.identifiers import CONTENT, DIRECTORY, RELEASE, REVISION, SNAPSHOT
+from swh.model.model import Origin
 from swh.web.common.identifiers import gen_swhid
 from swh.web.common.utils import reverse
 from swh.web.tests.django_asserts import assert_contains
@@ -123,9 +124,12 @@
 
 
 @given(content())
-def test_content_id_optional_parts_browse(client, content):
+def test_content_id_optional_parts_browse(client, archive_data, content):
     cnt_sha1_git = content["sha1_git"]
     origin_url = "https://github.com/user/repo"
+
+    archive_data.origin_add([Origin(url=origin_url)])
+
     swhid = gen_swhid(
         CONTENT, cnt_sha1_git, metadata={"lines": "4-20", "origin": origin_url},
     )
@@ -187,8 +191,9 @@
 
 
 @given(directory())
-def test_browse_swhid_special_characters_escaping(client, directory):
+def test_browse_swhid_special_characters_escaping(client, archive_data, directory):
     origin = "http://example.org/?project=abc;"
+    archive_data.origin_add([Origin(url=origin)])
     origin_swhid_escaped = quote(origin, safe="/?:@&")
     origin_swhid_url_escaped = quote(origin, safe="/:@;")
     swhid = gen_swhid(DIRECTORY, directory, metadata={"origin": origin_swhid_escaped})
diff --git a/swh/web/tests/common/test_archive.py b/swh/web/tests/common/test_archive.py
--- a/swh/web/tests/common/test_archive.py
+++ b/swh/web/tests/common/test_archive.py
@@ -975,6 +975,14 @@
     assert origin_info["url"] == deb_origin.url
 
 
+def test_lookup_origin_single_slash_after_protocol(archive_data):
+    origin_url = "http://snapshot.debian.org/package/r-base/"
+    malformed_origin_url = "http:/snapshot.debian.org/package/r-base/"
+    archive_data.origin_add([Origin(url=origin_url)])
+    origin_info = archive.lookup_origin({"url": malformed_origin_url})
+    assert origin_info["url"] == origin_url
+
+
 @given(snapshot())
 def test_lookup_snapshot_branch_name_from_tip_revision(archive_data, snapshot_id):
     snapshot = archive_data.snapshot_get(snapshot_id)
diff --git a/swh/web/tests/common/test_identifiers.py b/swh/web/tests/common/test_identifiers.py
--- a/swh/web/tests/common/test_identifiers.py
+++ b/swh/web/tests/common/test_identifiers.py
@@ -19,6 +19,7 @@
     SWHID,
     parse_swhid,
 )
+from swh.model.model import Origin
 from swh.web.browse.snapshot_context import get_snapshot_context
 from swh.web.common.exc import BadInputExc
 from swh.web.common.identifiers import (
@@ -637,3 +638,13 @@
         query_params={"path": dir_subdir_path},
     )
     assert resolved_swhid["browse_url"] == browse_url
+
+
+@given(directory())
+def test_resolve_swhid_with_malformed_origin_url(archive_data, directory):
+    origin_url = "http://example.org/project/abc"
+    malformed_origin_url = "http:/example.org/project/abc"
+    archive_data.origin_add([Origin(url=origin_url)])
+    swhid = gen_swhid(DIRECTORY, directory, metadata={"origin": malformed_origin_url})
+    resolved_swhid = resolve_swhid(swhid)
+    assert origin_url in resolved_swhid["browse_url"]