Cove Download Manager version history - 10 versions
Cove Download Manager by Sin
Cove Download Manager version history - 10 versions
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.4.7
Released Aug 9, 2026 - 83.82 KBWorks with firefox 140.0 and later, android 142.0 and laterWhat's new in version 1.4.7:
The download button on videos is more accurate about what it can do. On a page where the video's address cannot be worked out, it now says "No video found" instead of quietly sending the page itself to Cove, which produced a download that failed for no visible reason. The button also stops getting stuck after that happens, and a video on a page with several players can no longer be sent using a different player's stream.
Interception also cleans up after itself more reliably. A download the browser finished or cancelled while the extension was asleep used to stay on the tracking list for the rest of the session, which could misclassify a later download that reused the same id. And the toolbar badge now shows OFF whenever interception is disabled, instead of being overwritten by a count of videos found on the page.
The free Cove Download Manager desktop app is required because it provides the download engine. Install Cove, launch it once, and then click "Test Connection to Cove" in the extension to link them.Source code released under MIT License
Older versions
Version 1.4.6
Released Aug 8, 2026 - 82.26 KBWorks with firefox 140.0 and later, android 142.0 and laterWhat's new in version 1.4.6:
Downloads on sites with very large cookie jars no longer fail. Cove's handoff puts a limit on the cookie header it accepts, and a big site's full set of cookies could exceed it, which made Cove refuse the whole download. The extension now sends the download without cookies rather than sending an oversized header, so the download still reaches Cove instead of failing outright. Cookies are never truncated, because half a cookie header authenticates nothing.
The free Cove Download Manager desktop app is required because it provides the download engine. Install Cove, launch it once, and then click "Test Connection to Cove" in the extension to link them.
Fixed: downloads on sites with very large cookie jars no longer fail.
Cove's native handoff bounds the size of the cookie header it will accept. A large site's full cookie jar could exceed that bound, and Cove then refused the entire download rather than just the cookies. The extension now drops an oversized cookie header and sends the download without it, so the download still reaches Cove.
The header is never truncated - half a cookie header authenticates nothing, so sending a partial one would fail in a more confusing way. Cookie handling is unchanged for every site under the limit, which is almost all of them.
Requires the Cove desktop app 3.5.1 or later for the matching fix on the app side. Older app versions still work; they just keep rejecting the oversized case.Source code released under MIT License
Version 1.4.4
Released Aug 6, 2026 - 71.31 KBWorks with firefox 140.0 and later, android 142.0 and laterSource code released under MIT License
Version 1.4.3
Released Jul 30, 2026 - 69.69 KBWorks with firefox 140.0 and later, android 142.0 and later- The download pill no longer reports "Video unavailable" when the real
problem is that Cove is not running. It now says which side failed:
"Cove is not running" when the app cannot be reached, "No video found"
when no downloadable media was detected, and "Download failed" for
anything else. The old wording blamed the page for a perfectly playable
video whenever Cove happened to be closed. - Downloads are no longer lost when Cove sends a malformed or empty reply.
Handling that reply could throw and skip the browser fallback, so a
download sent from the context menu could end up neither in Cove nor in
the browser. The browser now always keeps the download unless Cove has
positively accepted it.
Source code released under MIT License
- The download pill no longer reports "Video unavailable" when the real
Version 1.4.2
Released Jul 27, 2026 - 69.02 KBWorks with firefox 140.0 and later, android 142.0 and laterFixes a bug where downloads sent to Cove (auto-detected downloads, right-click "Download with Cove", the in-page media pill, and the keyboard shortcut) would bypass debrid resolution when a Real-Debrid, AllDebrid, or TorBox account was enabled in Cove, causing the host's confirmation page to download instead of the real file.
Also fixes the "Download with Cove" context menu item disappearing after restarting Firefox.Source code released under MIT License
Version 1.4.1
Released Jul 17, 2026 - 68.81 KBWorks with firefox 140.0 and later, android 142.0 and laterWhat's new in 1.4.1:- Fixed: clearing the minimum file size field in the options page no longer silently disables the size filter. An empty field is now treated as 0 (intercept
all sizes). - Fixed: file sizes of 1 TB and above now display correctly in the popup instead of showing "undefined".
- Fixed: the popup no longer logs repeated errors while the extension's background process is restarting.
- Improved: responses from the Cove desktop app are now validated more strictly, so a malformed reply can no longer leave a download in a stuck state.
Requires the Cove Download Manager desktop app. Version 2.0.1 of the app is recommended, as it includes matching reliability fixes for browser-initiated
downloads.Source code released under MIT License
- Fixed: clearing the minimum file size field in the options page no longer silently disables the size filter. An empty field is now treated as 0 (intercept
Version 1.4.0
Released Jul 16, 2026 - 68.5 KBWorks with firefox 140.0 and later, android 142.0 and laterVersion 1.4.0 adds in-page video downloading through Cove Download Manager.
• Added a “Download with Cove” button to actively playing videos
• Added support for YouTube watch pages and old Reddit video posts
• Added detection for direct MP4, WebM, and HLS streams
• Improved video detection on dynamically loaded pages, embedded players, and shadow DOM players
• Added an option to enable or disable the in-page video button
• Improved downloaded video filenames using page and video titles
• Fixed the button disappearing during playback changes
• Fixed unsafe HTML rendering flagged by Firefox Add-on validation
• Updated minimum requirements to Firefox 140 and Firefox for Android 142
Requires Cove Download Manager 1.9.0 or newer for video downloads.Source code released under MIT License
Version 1.3.0
Released Jul 4, 2026 - 62.46 KBWorks with firefox 91.0 and laterNew in 1.3.0: in-page video download pill.- Hover any HTML5 video and a floating "Download with Cove" button appears in the top-right corner of the player. One click sends the video to the Cove
desktop app with the page's cookies and referrer. - Supports direct MP4/WebM video sources, plus HLS (M3U8) streams the extension has detected for the tab (useful for players that use blob/MSE sources).
- Nothing downloads automatically: the pill only acts on an explicit click, shows a "Sent to Cove" state to prevent duplicates, and never appears for
DRM-protected media.
Existing features (download interception, right-click "Download with Cove", detected stream list, Alt+Shift+D toggle) are unchanged.Source code released under MIT License
- Hover any HTML5 video and a floating "Download with Cove" button appears in the top-right corner of the player. One click sends the video to the Cove
Version 1.2.0
Released Jun 18, 2026 - 57.99 KBWorks with firefox 91.0 and laterAdded HLS/M3U8 stream detection - detects video streams on pages and lets you download themSource code released under MIT License
Version 1.0.0
Released Jun 13, 2026 - 55.03 KBWorks with firefox 91.0 and laterSource code released under MIT License