Nightly Build

This is an automated nightly build that is recreated every night with the latest changes from the develop branch.

Installation

You can install this nightly build by downloading the wheel package (the file ending in .whl) from the Assets section below this description.
After downloading, you can install it using the following commands from your terminal:

For Windows:

pip install %USERPROFILE%\Downloads\label_studio-1.23.0.dev20251119-py3-none-any.whl

For macOS/Linux:

pip install ~/Downloads/label_studio-1.23.0.dev20251119-py3-none-any.whl

Important Notes

This is a development build and may contain bugs or incomplete features
Use in production environments is not recommended
Please report any issues you encounter in our GitHub Issues
This release is automatically recreated every night with the latest changes

Changes

Changes since 1.21.0: 1.21.0...nightly

Helm Chart version: 1.11.3

🌟 What's new

🎉 New features

🖌 Bitmask support for precise image annotation

There is a new BitmaskLabels tag to support pixel-level image annotation using a brush and eraser. This new tag allows for highly detailed segmentation using brush-based region and a cursor that reflects brush size down to single pixels for fine detail. We’ve also improved performance so it can handle more regions with ease. (#7766 #7799 #7852)

Additionally, Mac users can now use two fingers to pinch zoom and pan images for all annotation tasks.

bitmask.mp4

🔤 Custom global hotkeys

You can now configure global hotkeys for each user account. These are available from the Account & Settings page. (#7784)

✅ Feature updates

▶️ One-click annotation for audio-text dialogues

When labeling paragraphs in dialogue format (layout="dialogue"), you can now apply labels at an utterance level. (#8037)

There is a new button that you can click to apply the selected label to the entire utterance. You can also use the pre-configured Command + Shift + A hotkey:

⚙️ Settings for TimelineLabels configurations

When you are using a labeling configuration that includes <TimelineLabels>, you will now see a settings icon. (#8011)

From here you can specify the following:

Playback speed for the video
Whether to loop timeline regions

↕️ Adjustable height for audio players

While you can still adjust the default height in the labeling configuration, now users can drag and drop to adjust the height as needed. (#8116 #8138)

2_29_adjust.mp4

✏️ Apply labels from multiple `<Labels>` controls

When you have a labeling configuration that includes multiple <Labels> blocks, like the following:

<View>
<Text name="text" value="$text" granularity="word"/>
<Labels name="category" toName="text" choice="single">
  <Label value="Animal" background="red"/>
  <Label value="Plant" background="darkorange"/>
</Labels>
<Labels name="type" toName="text" choice="single">
  <Label value="Mammal" background="green"/>
  <Label value="Reptile" background="gray"/>
  <Label value="Bird" background="blue"/>
</Labels>
</View>

You can now choose multiple labels to apply to the selected region. (#8162)

2-29-multilabels.mp4

⏱ Support for high-frequency rate time series data

You can now annotate time series data on the sub-second decimal level. (#8056)

Note: Your time format must include .%f to support decimals.

For example:
timeFormat="%Y-%m-%d %H:%M:%S.%f"

Special thanks to @dronishe for reporting this issue (7948)

☁️ Improved cloud storage modal

When adding cloud storage, the modal has now been redesigned to add clarity and additional guidance to the process. (#8007 #8057)

For example, you can now preview a list of files that will be imported in order to verify your settings.

🧩 Improved UI for empty Data Manager

When loading the Data Manager in which you have not yet imported data, you will now see a more helpful interface. (#8149)

🔳 Snap bounding boxes to pixels

The <Rectangle> and <RectangleLabels> tags now include the snap parameter, allowing you to snap bounding boxes to pixels. (#8045)

Tip: To see a pixel grid when zoomed in on an image, you must disable pixel smoothing. This can be done as a parameter on the <Image> tag or from the user settings.

📌 Define the default collapsed state

The <Collapse> tag now includes an open parameter. You can use this to specify whether a content area should be open or collapsed by default. (#7993)

🌈 Configure whether to display spectrograms in the labeling configuration

There is a new spectrogram parameter for the <Audio> tag, allowing you to show spectrograms by default. (#7762 #7788)

⭐️ SDK 2.0.x

We released a new version of the SDK, with multiple functional and documentation enhancements.

Documentation

Release notes

✨ Miscellaneous UX improvements

Removed the default zoom level calculation for Audio, allowing it to render the full waveform by default. (#7980)
Removed repetitive headers from Info and History panels in the labeling interface. (#7832)

💪 Performance improvements and optimizations

Multiple performance optimizations, fine-tuning, and dependency cleanup. (#8105, #8102, #7926)

⚠️ Breaking changes

/api/projects/{project_id}/export is now deprecated. (#7967)
The page size for /api/projects API is now limited to 100 projects. (#7936)
SDK 2.0 included several breaking changes.

🔒 Security

Fixed a Koa.js XSS vulnerability tied to a redirect function. (#7927)
Added improved password validation. (#7859)
Updated esbuild to patched version (#7929, #7931)
Removed unsafe-eval from default CSP configuration. (#7776)

🐞 Bug fixes

Fixed various UI issues associated with tooltips and buttons. (#8049, #8158, #8058, #8009, #8070)
Fixed various UI issues for dark mode. (#7990, #7985, #7867)
Fixed an issue where predictions with empty results could not pass validation. (#8269)
Fixed an issue where audio and video would be out of sync when working with lengthy videos. (#7633)
Fixed an issue where, when zoomed in, bounding boxes would shift after being flipped. (#8148)
Fixed an issue where an empty Import modal would be shown briefly when uploading a file. (#8155)
Fixed an issue with duplicate entries when filtering for annotators from the Data Manager. (#8202)
Fixed an issue where long storage titles prevented users from accessing the overflow menu. (#8137)
Fixed an issue where imported child choices were not selectable when using the leafsOnly parameter for taxonomies. (#8146)
Fixed an issue with labeling Text or Hypertext with multiple Taxonomy tags at the same time. (#8103)
Fixed an issue where the taxonomy drop-drop down was not displaying in the labeling interface preview. (#7881)
Fixed an issue where the focus was lost when entering a character on the webhook header fields. (#8077)
Fixed an issue that would sometimes render a user in the Data Manager without a display name. (#8081)
Fixed an issue affecting manually entering the end time for an audio region. (#7829)
Fixed an issue where autocomplete was not working when configure the labeling interface as part of the create project workflow. (#8072)
Fixed an issue where the layout was incorrect when pinning Data Manager filters to the sidebar. (#8061)
Fixed an issue where resizing the labeling interface area would not resize the video player. (#8038)
Fixed an issue where a blank avatar would display in the Data Manager when more than 10 annotators had worked on a task. (#8026)
Fixed an issue were api/tasks would time out with a large number of annotations. (#8005)
Fixed an issue where text in a <TextArea> field was still submitted even if the field was conditionally hidden. (#7982)
Fixed an issue where multichannel timelines would display on initial load. (#7984)
Fixed an issue where the error indicator was not visible when creating a project. (#7964)
Fixed an issue that caused avatars to overflow the table cell in the Data Manager. (#7932)
Fixed an issue where users were able to improperly modify regions and add polygon points when using Compare all annotations on a task. (#7907, #7900)
Fixed an issue where time series charts were not always properly displayed in the playground. (#7918)
Fixed an issue that where the data import page did not display correctly after importing a CSV file. (#7898)
Fixed an issue that prevented audio regions from being visualized over the full interface in split channel mode. (#7848)
Fixed an issue where audio failed to render the full waveform when zoomed out at the page level. (#7854 #7857)
Fixed an issue where filters disappeared in the Data Manager and could not be edited after changes to filters or columns. (#7843)
Fixed an issue where RichText Tags were not rendering correctly on Fir...