Just IG Image Downloader by ivanusto

Just IG Image & Video Downloader

Just IG Image & Video Downloader is a simple and easy-to-use Firefox extension that allows you to effortlessly download images and videos from Instagram.
Key Features

One-Click Individual Download Easily download any specific image or video from Instagram with a single click.
Batch Download Support Brand new feature allows you to download all photos within a single carousel post at once.
Comprehensive Content Support Works flawlessly with regular posts (images and videos), feed videos, and stories.
Real-Time Status Feedback Provides instant visual feedback during the download process.
Clean and Native Interface Preserves Instagram's original user experience without cluttering the UI.
Safe and Privacy-Focused Absolute peace of mind as no personal data is collected.
How to Use

First, install the extension.
Next, browse Instagram as you normally do.
Then, hover your mouse over any image or video.
Click the individual download button or the "Download All" button that appears.
Your media will be saved automatically to your default downloads folder.

What's New in Version 3.1

Batch Download Added Introduced a new button to download all photos within a post simultaneously.
Algorithm Logic Upgraded Overhauled the underlying download logic to ensure photo and video downloading across stories, home feed, and individual post pages executes perfectly.
Refreshed UI Design Updated the download button graphic with a cleaner, refreshed look.

Support:
For any questions or suggestions, please contact us.
Note: This extension is not affiliated with or endorsed by Instagram.

Chrome Ver. is here:
https://chromewebstore.google.com/detail/just-ig-image-downloader/jkfhcnhffglcmeolblidlogkjmcgpcja

Version History:

3.1 - Batch Download Added, Refreshed UI Design.
2.7 - Resolved a bug where the download button on IG Stories was unclickable due to Instagram's transparent navigation overlay.Repositioned the download button to the bottom right corner to prevent interference with native mute buttons and the reply bar. Upgraded the underlying injection logic and added dynamic URL observers to ensure the button displays reliably when seamlessly switching between stories.
2.6 - Adds full support for Instagram DASH streaming by switching to the official API to fetch muxed MP4 (audio + video). Fixes missing audio/video and incorrect media capture. Supports Stories and carousel posts, with fallback for improved reliability.
2.5 - Download behavior changed, use username and timestamp as filename.
2.4 - Improved Performance. Rewrote video download engine: intercept real CDN MP4 URLs via webRequest instead of relying on blob URLs. Fixed audio-only track filtering (base64url decode fix). Fixed wrong-video downloads on Feed by grouping cached URLs per video with timestamps.
2.3 - Improved video detection and download button placement. Added delayed mounting for videos not yet loaded. Video-first scanning prevents duplicate buttons on the same container.
2.2 - Fix Video or Image download error in some cases. Modify values of minSize and rect.width, rect.height.
2.1 - No more download button on account profile image. Enhanced video URL detection algorithm.
2.0 - Add IG videos download support. IG images download with prefix plus timestamp.
1.0 - Initial release