Hello, I am an amateur photographer and I recently moved from an old iPad to a Galaxy Tab S 10.5 with custom rom, Android 6.

On the iPad the thumbnails were created while importing photos from iTunes, and even at the first time I opened the gallery everything was there.

Now I just copy a Photo folder into the root of my microSD card and I use QuickPic Gallery (but any other gallery is the same) to view the photos. I have 2-3k pictures and every time I open a gallery for the first time i see only black squares and they slowly appear, same story when I open a photo full-screen.

Short story:

Pictures that I copy into the microSD card have no thumbnails.

I don't want to wait for the creation on-the-fly when I open a folder or manually open everything after copying so the next time will be cached!

How can I trigger the creation of all necessary thumbnails just after I copied my photos?


  • How are you copying the files onto the SD card? Through MTP (on a USB connection to your PC), or by taking the SD card out, or something else? – Dan Hulme May 19 '16 at 12:10
  • I take the SD card out, and copy a 'photos' folder into the root of the SD. Inside the photos folder there are other 2 leves, like: F:\photos\2015\France\0001.jpg – Michael May 19 '16 at 12:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.