Windows Spotlight cycles through scenic landscape photos sourced from Microsoft Bing

— a pleasant feature, but one that offers no control over subject matter. For users who would prefer to see Renaissance paintings, wildlife photography, or any other curated theme on their lock screen, the built-in options fall short. This article explores what is technically possible and how to build a personalized, randomized lock screen slideshow from image collections of your choosing.

What Windows Spotlight Does and Does Not Allow

Windows Spotlight is a lock screen feature that automatically downloads and displays rotating images from Microsoft Bing. It is managed entirely by Microsoft and cannot be redirected to pull from external sources such as Google Arts and Culture or any museum API. There is no built-in setting to change the image source while keeping the automatic rotation behavior.

To change the lock screen behavior at all, navigate to Settings → Personalization → Lock screen. From here, the available modes are: Windows Spotlight, a single static image, or a slideshow from a local folder. The slideshow option is the most relevant starting point for building a themed experience.

Using Windows' Built-In Slideshow Mode

Under Settings → Personalization → Lock screen, selecting "Slideshow" allows Windows to cycle through images stored in a designated local folder. The images rotate automatically, and the folder can be updated at any time. This replicates the randomized feel of Spotlight while giving full control over what images appear.

The key limitation is that populating that folder requires effort. Images must be downloaded in advance, which introduces what might be called the "preview problem" — by selecting and downloading each image, the user inevitably sees it before it appears on the lock screen, reducing the element of surprise.

Sourcing Themed Images from Public Collections

Several major institutions offer open-access image collections that are legally downloadable at high resolution. These are among the more commonly referenced sources:

The Metropolitan Museum of Art — offers a public API and over 400,000 open-access images. Results can be filtered by date range, medium, culture, and more.
Rijksmuseum (Amsterdam) — provides a well-documented API with filtering by artist, period, and object type.
Wikimedia Commons — hosts a large number of public domain artworks with structured metadata.
Google Arts and Culture — offers browsing and embedding tools, though direct bulk downloading via API is more restricted compared to museum-hosted collections.

For users specifically interested in 15th–16th century European painting, the Met and Rijksmuseum APIs allow filtering by date range and return direct image URLs, making them well-suited for scripted downloads.

Automating Downloads with Scripts

A basic automation approach involves writing a script — in Python, for example — that queries a museum API with selected filters, retrieves a list of image URLs, checks image dimensions for screen suitability, and downloads files to a designated folder. This can be scheduled to run periodically, adding new images over time without manual review.

A rough outline of what such a script might do:

Send a filtered request to a museum API (e.g., date range 1400–1600, medium: oil on panel)
Parse the response for image URLs and metadata
Filter by minimum image dimensions (e.g., 1920×1080 or larger)
Download files to a local folder (e.g., C:\Users\[Name]\Pictures\LockscreenArt)
Point Windows lock screen slideshow to that folder

This approach does partially preserve the surprise element — if the script downloads images in large batches without the user reviewing each one individually, many will appear on the lock screen for the first time. The degree of surprise depends on how the download process is handled.

Third-Party Lock Screen Tools

Some third-party applications extend lock screen functionality beyond what Windows natively offers. Tools in this category vary in approach: some pull from online sources on a schedule, others manage local image libraries with more control over rotation behavior. A few are available through the Microsoft Store.

When evaluating any such tool, it is worth considering:

Whether it supports lock screen (as opposed to desktop wallpaper only)
Whether it allows custom image source folders or online feeds
Privacy implications of any tool that requires network access or account sign-in

Many tools marketed as "lock screen changers" primarily target the desktop wallpaper and may not actually replace the Windows lock screen. Verifying this distinction before installing is advisable.

The Surprise Element: A Real Tradeoff

One of the genuine appeals of Windows Spotlight is that images appear without any prior exposure — they are selected and delivered by an external system. Replicating this with a personally curated theme involves a structural tradeoff: the more control a user exercises over what enters the collection, the more likely they are to have seen the images before they appear.

Automated scripted downloads, particularly from large API collections with broad filters, can mitigate this significantly. A script that pulls 200–300 images from a filtered date range without displaying them during download can populate a folder the user has not consciously reviewed. Whether this satisfies the desired experience is a matter of individual preference.

There is currently no consumer-ready tool that replicates Spotlight's fully automatic, theme-selectable behavior out of the box. The gap between what Spotlight offers and what users with specific aesthetic interests want appears to be a genuine unmet need.