Too Many AI Images? I Built Midnight Gallery to Organize Them
If you use Stable Diffusion, Flux, Illustrious, Pony, or other image generation models regularly, you probably know the problem.
Your image folder keeps growing.
Hundreds of images become thousands, then tens of thousands. You start creating folders inside folders, and eventually finding an old image becomes surprisingly difficult.
I wanted something between a traditional file browser and a full digital asset management system ā something designed primarily for browsing visual collections.
So I created Midnight Gallery.
Midnight Gallery is available now on the Microsoft Store.
ā Get Midnight Gallery
A Visual Library First
Midnight Gallery is primarily designed for organizing and viewing:
Images Ā· Videos Ā· PDFs
Instead of treating your collection like a normal file directory, Midnight Gallery lets you organize media into visual Collections.
Each Collection can represent anything you want:
A character
A model
A LoRA
A project
A photography set
Reference images
AI generations
Comics or PDF collections
The goal is simple: make large visual libraries easier and more enjoyable to browse.
Collections Instead of Endless Folders
Collections are displayed as visual cards, allowing you to recognize your content immediately without opening multiple folders.
Cards can be rearranged with drag & drop, and the number of preview images displayed on each card can be customized.
You can also change how many Collections are displayed on each page.
For large libraries, this makes navigation much faster than browsing folders one by one.
One of the main ideas behind Midnight Gallery is that a visual project doesn't always consist of images alone.
A Collection can contain:
JPG / JPEG
PNG
WebP
GIF
BMP
AVIF
HEIC / HEIF
Videos
PDFs
This means a single Collection can contain generated images, reference videos and related PDF material without separating everything into different applications.
[Screenshot: Collection cards / card preview]
Images, Videos and PDFs in the Same Collection
One of the main ideas behind Midnight Gallery is that a visual project doesn't always consist of images alone.
A Collection can contain:
JPG / JPEG
PNG
WebP
GIF
BMP
AVIF
HEIC / HEIF
Videos
PDFs
This means a single Collection can contain generated images, reference videos and related PDF material without separating everything into different applications.
A Viewer Designed for Browsing
Midnight Gallery includes a dedicated viewer for moving quickly through your collection.
Images can be displayed individually or in a two-page spread, which is especially useful for illustrations, manga, comics and scanned material.
PDF pages can also be integrated into the viewing experience alongside other media.
The idea is to keep browsing fluid instead of constantly switching between applications.
View and Search Prompts
For AI-generated images, Midnight Gallery can display the prompt information stored with each image. You can also search through prompt text, making it easier to find past generations based on specific words, concepts, characters, styles, or other details.
Instead of relying only on filenames or folders, you can use the prompts themselves to rediscover older images and quickly reference how they were created. This keeps both your images and their generation details easy to browse and search in one place.
Slideshow Mode
Collections can also be viewed as a slideshow.
Transition effects and timing can be adjusted, and slideshow playback can continue while using the two-page spread layout.
This is useful not only for presentations, but also for simply letting a collection play on a second monitor.
Search Large Libraries Quickly
Once a library becomes large, browsing alone isn't enough.
Midnight Gallery includes search and filtering tools to help locate media across your collection.
Search results update according to the selected filters, making it easier to narrow down large libraries without manually navigating through folders.
Switch Between Multiple Libraries
Midnight Gallery lets you create and switch between multiple Libraries, so you can keep different types of media completely separate when needed. For example, you can maintain one Library for AI-generated images, another for photography, and another for work or reference materials ā all within the same app.
Each Library keeps its own Collections and content structure, making it easy to organize large amounts of media without mixing everything together.
Drag & Drop Workflow
A lot of the application is designed around drag & drop.
Images or folders can be dropped into Midnight Gallery to create Collections, and Collection cards themselves can be rearranged directly.
I wanted common actions to require as little menu navigation as possible.
Audio Is Available Too
Midnight Gallery is mainly a visual media manager, but audio files can also be added to individual Collections.
Audio clips support continuous playback, repeat and shuffle playback, and can be reordered with drag & drop.
This can be useful for attaching a soundtrack or related audio material to a visual Collection without turning the application into a dedicated music player.
Built for Local Collections
Midnight Gallery is a desktop application designed around local media libraries.
Your existing image, video and PDF collections remain the focus ā the application acts as a visual interface for browsing and organizing them.
For people generating large numbers of AI images locally, that was particularly important to me.
Add More Without Worrying About Duplicates
Midnight Gallery prevents the same image from being added to a Collection twice.
That means you don't have to keep track of which files you've already imported or remember exactly where you stopped last time. Simply add more media whenever you like ā Midnight Gallery takes care of avoiding duplicates, making large and growing Collections much easier to manage.
Why I Made It
I originally started developing Midnight Gallery because I couldn't find a viewer that matched the way I wanted to browse large visual collections.
Traditional file managers are excellent for managing files, but they aren't particularly enjoyable for exploring images.
Many photo managers, on the other hand, are built around photography workflows.
I wanted something closer to a personal visual library.
Something where opening the application feels more like entering a gallery than opening a folder.
That idea eventually became Midnight Gallery.
Midnight Gallery
Midnight Gallery is available for Windows through the Microsoft Store.
Microsoft Store:
https://apps.microsoft.com/detail/9PB47C6T3CBC
Development is still continuing, so feedback from people managing large AI image collections is especially welcome.
If you try it, I'd be very interested to hear how you organize your own AI image library.