Once you’ve extracted what you need, delete the original .thumbdata file. It’s just cache. Your device will run faster without a 3GB database of dead thumbnails. Have a different mysterious file format you need to crack open? Drop it in the comments below.
No simple drag-and-drop web tool will magically show you a clean slideshow. thumbdata viewer online
Here is everything you actually need to know about Thumbdata files and how to safely view them online. If you’ve ever used an Android phone (especially versions 4.0 to 9.0), the Gallery app created a hidden database of every photo thumbnail it generated. That database is the .thumbdata file. Once you’ve extracted what you need, delete the original
Stuck with a massive .thumbdata file? Here’s why normal image viewers fail, and the safe online methods to extract hidden previews from Android’s cache. You’re cleaning up your old SD card or external hard drive, and you see it: a giant file named .thumbdata3--1967290299 (or something similar). It’s taking up gigabytes of space, but you can’t double-click to open it. Have a different mysterious file format you need