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Library Spy

Why I Made the Naperville Library Spy Site

Naperville Library Spy is a live look at what books are being checked out across the Naperville Public Library. I built it because the library changed my life, and I wanted people to see curiosity moving through the city in real time.

Read the deeper story and motivation

Covers below are alive. New checkouts get highlighted and drift through this page with where and when they were seen.

Loading live checkouts...
Warming up the live book flow...

The why

I got my library card years ago while learning English and trying to rebuild my life. I started checking out books, one after another, and realized that libraries are vehicles of self-actualization.

This project started from one recurring thought: Wouldn't it be cool to see what people are actually reading right now? So I built it to make that invisible citywide curiosity visible.

How it works (super simple): we watch public catalog availability, and when available copies go down, we mark that as live reading activity.

Curiosities and Patterns

I have been running the site for a while, and these are patterns that keep showing up in the data.

📚 95th Street dominates

The 95th branch is the busiest by a lot. It consistently leads total checkout flow compared with Nichols and Naper Blvd.

🎬 Hollywood moves books fast

Movie and TV announcements shift checkout behavior almost immediately. Project Hail Mary by Andy Weir and The Housemaid wave effects are recent examples.

🧭 Branches read differently

Branches have distinct reading identities. The overlap in top titles across neighborhoods is lower than most people expect.

🐶 Kids books are huge

Dav Pilkey is everywhere. Dog Man is citywide, with especially strong pull at 95th.

95th 48.1%
Nichols 34.6%
Naper 17.3%

🤝 Citywide consensus books exist

A few titles split almost evenly across branches. Example: Bob Books at 7 / 8 / 6 across 95th, Naper, and Nichols.

⚙️ Inventory can get smarter

If checkout probability is branch-specific, copy allocation can be branch-specific too. That means fewer transfers, lower handling cost, and faster access for readers.

🌀 Summer watchlist is obvious

I would not be surprised if The Odyssey climbs hard through summer once adaptation hype ramps up.

Follow Your Curiosity

I built this because curiosity changed (and continues to change) my life, and I wanted to make that visible for everyone.

Other Naperville projects
🍜✨ The Naperville Underrated Food Map Google shows you what is already popular. This map shows you what is actually worth trying next.