Version 1.4.0 brings a major upgrade to the downloader. Douyin has changed how videos are loaded in the background, which caused video detection and downloads to become unreliable.

We rebuilt the way the extension finds videos, making it much more reliable with the latest Douyin website changes.


Better video detection

The extension can now detect videos even when Douyin loads them in the background or while scrolling through the feed.

Fewer missed videos

Improved detection helps prevent videos from being missed when you scroll through a large number of posts.

More reliable video identification

The extension now works harder to identify the actual video you are viewing instead of accidentally connecting it to another video from the page.

More complete downloads

Some videos were previously downloaded only partially because Douyin could load them in smaller pieces. v1.4.0 now handles these downloads properly so you get the complete video.

Better file names

Downloaded videos now use their actual Douyin video ID.

For example:

Douyin_7690186719270767082.mp4

This makes your downloaded videos much easier to find, organize, and identify later.


No more external font requests

The extension now includes its fonts directly instead of requesting them from Google.

This means:

• No unnecessary font requests to third-party servers
• The interface works correctly even when you're offline
• Faster and more consistent interface loading
• Fewer external connections

The extension now has smoother transitions when automatic video detection isn't immediately available and you need to use the manual URL option.


This release also replaces a large amount of the previous detection system with a completely new approach designed around how Douyin currently loads videos.

In short: v1.4.0 focuses on making video detection more reliable, downloads more complete, filenames more useful, and the extension more private.

This release introduces a compact floating-button mode, reworks the panel's transition animations, and fixes state synchronization issues between UI modes during active downloads.

• Added a toggle (top-left icon) that collapses the panel into a 42px circular floating button.
• The wrapper background and borders are removed in compact mode; only a 1px rgba(255, 255, 255, 0.08) outline remains, so the button sits cleanly over arbitrary video backgrounds.
• Control icons (expand/close) use the theme accent color (#7B73B9, 0.95 opacity) for sufficient contrast against dark video content.
• Adjusted header padding (6px) and icon alignment (7px) for the smaller footprint.

• Panel resize between expanded and compact states now uses a custom spring easing (cubic-bezier(0.34, 1.35, 0.64, 1)) instead of a linear/ease transition.
• Added a brief glow pulse (dl-morph-glow) on mode switch as a visual cue that the transition completed.
• Expanded mode fades/scales in with a blur clearance effect (dl-expand-content-in); compact mode uses a spring bounce-in (dl-compact-pop-in).
• Removed hover/click scale transforms on buttons (transform: none !important) — these were causing layout jitter and weren't adding value.

• updateUI() now checks state.isDownloading first, so an in-progress download's animation state is no longer overwritten by background video scans or unrelated page events. This was the root cause of downloads occasionally appearing "stuck" mid-transition.
• State is now kept in sync across mode switches:
• Compact mode shows a spinning ring (.dl-compact-spinner) around the button while downloading.
• Switching to expanded mode mid-download immediately shows the full panel's animated border (.dl-panel-animating) plus the button spinner — no flash of idle state.
• Switching back to compact mode stops the panel border animation and resumes the ring spinner without a visible gap.

Version 1.2.0 introduces support for Firefox for Android, a visual indicator for newly detected video URLs, and multiple performance, stability, and user interface improvements.



The extension now supports Firefox for Android (Fenix v142 and later).

Key improvements include:

• Added gecko_android.strict_min_version to manifest.json, allowing the extension to appear in Firefox Add-ons (AMO) search results for Android users.
• Implemented touch-based dragging for the floating panel using touchstart, touchmove, and touchend events.
• Updated the panel layout with a responsive width of min(300px, calc(100vw - 24px)) to prevent overflow on smaller screens.
• Applied touch-action: manipulation to buttons to disable double-tap zoom while preserving the native button appearance.
• Added graceful handling for the lack of HTMLVideoElement.captureStream() support on Firefox for Android. Selecting Record now displays the message "Record not supported on Android" instead of causing an error.

Reviewer Note

Douyin redirects Android browsers to its mobile application by default. To use the extension on Firefox for Android, users must enable Request Desktop Site. This behavior is a limitation of the Douyin website and is not related to the extension.


The extension now provides a visual confirmation whenever a new downloadable video URL is detected.

• The panel title displays a left-to-right animated gradient (red → purple → blue) over 0.55 seconds.
• After the animation completes, the title returns to its default white appearance.
• The effect uses background-clip: text with an animated background-position, allowing GPU-accelerated rendering with no additional layout or paint overhead.
• The animation is triggered only once for each unique video URL by comparing against the previously detected URL.

Resolved an issue where the displayed download URL was slow to update when swiping between videos.

Changes include:

• Reduced scroll debounce from 100 ms to 50 ms.
• Reduced MutationObserver debounce from 500 ms to 300 ms.
• Updated the MutationObserver to ignore DOM mutations originating from the extension panel (#douyin-dl-ui), preventing unnecessary re-scans triggered by internal UI updates.
• Retained the existing play event listener as the primary detection path, allowing URL updates immediately when a new video begins playback.

Fixed a regression introduced by Android touch-target improvements that increased button height from 26 px to 32 px. Button dimensions have been restored to the original 26 px height.

This update focuses on improving stability and polishing the user experience. No new permissions have been added, and the extension still does not collect any user data.

• Floating panel now returns automatically. Closing the panel only hides it for the current page. It will appear again the next time you visit Douyin.
• Long video URLs display correctly. URLs are now wrapped and limited to two lines, preventing them from overflowing the panel.

• Cleaner browser console. Removed internal debug messages to keep DevTools free of unnecessary logs.
• Better live stream performance. Eliminated repeated processing and console spam on live stream pages.
• More efficient event handling. Improved timer management during rapid page updates for smoother performance and lower resource usage.

• No new permissions added.
• No user data is collected (data_collection_permissions.required remains ["none"]).
• Source code is unminified and human-readable.
• The submitted package excludes development files such as the .git directory.

• Completely redesigned popup with a modern dark theme.
• Added a download counter to track downloaded videos.
• Added an Auto-Copy Link toggle for quick sharing.
• Added quick links to social profiles.

• Refreshed floating panel styling and layout.
• Improved URL copy feedback with a "Copied link" confirmation.
• Better text alignment and overflow handling.
• Removed unnecessary status blinking animations.
• Updated popup theme colors, quick links, and footer.

• Refactored the extension into a modular architecture for improved maintainability.
• Split the large content script into dedicated modules.
• Consolidated styles into a single stylesheet.
• Improved Firefox Manifest V3 compatibility.

• Fixed floating panel close/reopen synchronization.
• Fixed popup state persistence across page reloads.
• Reduced unnecessary processing and console log spam on live streams.
• Debounced DOM event listeners for better performance.
• Improved download tracking and overall stability.