The Wayback Machine maintained 21 years of pictures from a cam that erases whatever

F1

Released Oct 1, 2026, 1:30 PM EDT

Rich Hein is a seasoned innovation reporter with more than 20 years covering designer, customer and business subjects. Rich’s profession has actually been committed to service journalism, linking readers to material that notifies and thrills.

Formerly, Rich was vice president and editor-in-chief for Simpler Media Groupdirector of audience advancement for IDG and editor/writer for websites like CIO.com, ComputerWorldCodeGuru and other tech-centric publications. He’s gotten many distinctions, consisting of the IDG Summit and Azbee awards and has actually been covered by Medium for his operate in audience advancement.

When not at his desk, Rich resides in Daytona Beach with his spouse and 3 canines. He takes pleasure in playing guitar, browsing and remaining abreast of the most recent in tech.

FogCam is a long-running task at San Francisco State University. It started in 1994 and has actually revealed live views from various parts of the school for many years. What makes it unique is that it’s the world’s earliest continually running web cam.

Now you ‘d believe having a cam running for years would produce a huge visual record of the school, however that’s not the case. Unlike a security video camera or image archive, FogCam primarily provides the existing image, overwriting the previous one each time it updates. This discusses why neither the task developers nor San Francisco State University maintained a total visual history.

Basically, unless somebody conserved a copy of the image, all the previous frames were efficiently lost. Or so it was believed …

The Wayback Machine conserved pictures FogCam itself didn’t

The spider often caught the image itself

For those of you who aren’t knowledgeable about it, the Internet Archive is a website that crawls sites throughout the web and conserves pictures of pages and submits it experiences. FogCam was no various. Throughout the years, the archive recorded pictures from the FogCam site in addition to the real image being served at the minute.

Those images and captures weren’t simply sitting there in a quite archive prepared to be seen. Rather, they were spread throughout the calendar within the Wayback Machine. It’s likewise worth discussing that not every image was conserved since that’s not what the Internet

Archive does. Often those images were simply replicates from the last time the website was crawled.

The important things to think of here is that these images made it through separately of the live FogCam page, and while they weren’t simply sitting there for somebody to click through, all somebody needed to do was browse the Internet Archive’s hidden index.

One brave Redditor browsed the Internet Archive’s index for each making it through image

The CDX index exposed the captures one by one

The foundations of the Wayback Machine are an index of pages and files that were recorded by its spiders. This index is called the CDX index, and it tape-records information such as the URL, capture time, file type, status code, and file absorb. Rather of searching archived pages through the Wayback Machine one at a time, you can browse the CDX for a particular file.

That’s precisely what one Redditor made with FogCam. They browsed the CDX index for fogcam2.jpg to discover every archived copy the Internet Archive had actually taped. The outcomes noted archived images from throughout the years. These outcomes didn’t need clicking through the Wayback Machine by hand. It was simply raw information revealing each circumstances where fogcam2.jpg was archived.

When the timestamps showed up, anybody might open the archived JPEGs straight and begin piecing together FogCam’s making it through visual history.

They recuperated 85 pictures covering 21 years

The enduring frames developed into a visual timeline

After eliminating all the replicate captures, the Redditor was entrusted 85 distinct FogCam images. Those making it through frames reached from October 2005 all the method through June 2026, covering almost 21 years at San Francisco State University. It’s plainly not a total record, however it’s adequate to reveal pieces of FogCam’s history that otherwise appeared lost in time.

Some years are represented by just a few captures, while later years have a lot more. It does not seem like a conventional image archive where whatever is nicely arranged by date. Rather, it feels more like somebody discovered a box of old pictures with pieces missing out on in between.

The images likewise demonstrate how FogCam itself altered throughout the years. As the cam transferred to various areas around the San Francisco State school, the view altered with it. That keeps the collection from being lots of similar cam shots. Checking out the making it through frames, you get little glances of the school at various times instead of one imperishable image.

The exact same strategy can discover other lost web files

I attempted the very same search on another continuously altering image

FogCam isn’t the only cam that keeps upgrading the exact same image file. The USGS Shishaldin volcano cam, for instance, serves its most current image as a file called current.jpgWhenever the web cam updates, that exact same file name indicate a brand-new image. The screenshot here reveals the existing Shishaldin view, however older variations might still exist in the Internet Archive if its spider took place to record that URL at various times.

That’s where the CDX index ends up being beneficial. Rather of searching for an old website, you can look for the specific current.jpg file and see whether the Wayback Machine conserved earlier variations of it. The exact same concept can deal with images, PDFs, downloads, or other files that were consistently changed at the very same URL, that makes CDX beneficial for discovering things that appear to have actually disappeared from the contemporary web.

The web forgets less than it appears

What I like about this is that the FogCam pictures are truly simply one example of what may still be concealing inside the Wayback Machine. The CDX index provides you another method to search for files that appear long gone, specifically when a website keeps changing the exact same image, file, or download at one URL. You might not discover whatever, however in some cases a file that looks lost to time is still being in the archive waiting on somebody to understand where to look.