Why and how to relocate Picasa's database to free up space or use faster storage

Picasa 3 stores its photo database and thumbnails in a single folder on your drive, and moving that folder to a different drive is straightforward — you copy the database, point Picasa to the new location, and delete the original. The process takes about ten minutes and requires no special tools. If your current drive is running low on space or you want to move your photo library to an external drive or faster SSD, this is the cleanest way to do it without losing any metadata, tags, or edits you've made in Picasa.

The key is that Picasa needs to know where you've moved the database before you delete the old one. If you just move the folder without telling Picasa, the program will create a new empty database on the original drive and you'll lose access to all your organized photos and edits.

Key Takeaways

  • Picasa 3 stores all its data in a single folder called "Picasa" in your user profile, which you can copy to any drive your computer can read.
  • You must change Picasa's database location in the program's settings before deleting the original folder, or the program will create a new empty database.
  • The move works with external drives and USB storage, but Picasa must be able to access the drive every time you use the program.
  • If you move the database to an external drive, keep it plugged in and in the same USB port to avoid Picasa losing the connection.

Locate your current Picasa database folder

Picasa stores everything — photos, thumbnails, metadata, tags, and edits — in a folder named "Picasa" inside your user profile. On Windows, this is usually at C:\Users\[YourUsername]\AppData\Local\Google\Picasa3. On Mac, it's at ~/Library/process Support/Google/Picasa3.

The AppData folder on Windows is hidden by default. To see it, open File Explorer, click the View tab at the top, and check the box for "Hidden items". Then navigate to your user folder and look for AppData. The Picasa3 folder inside contains everything you need to move — it's typically between 500 MB and several GB, depending on how many photos you've organized.

Before you do anything, close Picasa completely. The program locks the database while it's running, and you won't be able to copy the folder if Picasa has it open.

Copy the Picasa folder to your new drive

Once Picasa is closed, right-click the Picasa3 folder and select Copy. Navigate to the drive where you want to move it — this can be an external USB drive, a second internal drive, a network drive, or an SSD — and paste the folder there. Windows and Mac both allow you to paste directly; you don't need to create a new folder first. The copy process may take several minutes if your library is large.

Do not delete the original folder yet. You need to verify that Picasa can read the new location first, and you'll need the original as a backup in case something goes wrong during the next step.

Change Picasa's database location in settings

Open Picasa 3. Go to Tools (on Windows) or Picasa (on Mac) in the menu bar, then select Preferences. Click the Folders tab. At the bottom of the window, you'll see a field labeled Picasa database location with a folder path and a button labeled Change.

Click Change and navigate to the Picasa3 folder you just copied to your new drive. Select it and click OK. Picasa will ask you to confirm that you want to move the database. Click Yes. The program will close and restart, and it should open with all your photos, tags, and edits intact — they're now being read from the new location.

If Picasa opens and shows no photos, or if it says the database is corrupted, close the program when ready and undo the change. Go back to Preferences, click Change again, and select the original Picasa3 folder on your first drive. This restores the old location and lets you troubleshoot before trying again.

Verify the new location is working, then delete the original

Let Picasa run for a few minutes with the new database location. Open a few folders, check that your tags and edits are there, and make sure the program responds normally. If everything looks correct, close Picasa and delete the original Picasa3 folder from your first drive. You can now free up that space or use the drive for other files.

Keep the new Picasa3 folder on your chosen drive. If you moved it to an external drive, make sure to always plug that drive in before opening Picasa — if the drive is disconnected, Picasa won't find the database and will create a new empty one on your computer.

What to do if Picasa loses the database connection

If you move the database to an external drive and later unplug it before closing Picasa, or if the drive disconnects unexpectedly, Picasa may create a new empty database on your computer. The original database is still safe on the external drive — you just need to point Picasa back to it. Go to Preferences, click Change under Picasa database location, and select the Picasa3 folder on the external drive again.

If you're using an external drive regularly, consider leaving it plugged into the same USB port. Moving the drive to a different port can sometimes cause Picasa to lose track of it, especially on older computers. If you need to move the drive to a different port, go through Preferences and re-select the Picasa3 folder so Picasa learns the new location.

Moving to a network drive or shared folder

Picasa can read its database from a network drive, but performance will be slower than a local drive because every photo thumbnail and metadata lookup has to travel across the network. If you're moving the database to a shared network location, make sure the drive is always available and that your computer has consistent access to it. Network interruptions can cause Picasa to lose the connection temporarily.

For shared household use, moving Picasa to a network drive is not recommended — each user should have their own Picasa database on their own computer. If multiple people need access to the same photos, consider using cloud storage or a shared folder that each person imports photos into separately, rather than sharing a single Picasa database.

Frequently Asked Questions

Can I move Picasa to a USB flash drive?

Yes, but it's not ideal. USB flash drives are slower than hard drives or SSDs, so Picasa will be noticeably sluggish when loading photos and thumbnails. If you do move it to a flash drive, always eject the drive safely through Windows or Mac before unplugging it, or you risk corrupting the database.

What if I want to move Picasa back to my original drive?

Follow the same process in reverse: copy the Picasa3 folder from the new drive back to your original drive, open Picasa, go to Preferences, click Change, and select the original location. Picasa will restart and read from the old drive again.

Will moving the database affect my photos themselves?

No. The Picasa database is separate from your actual photo files. Moving the database does not move, copy, or change your photos — it only moves Picasa's index, thumbnails, and metadata. Your photos stay wherever they are on your drives.

Can I have two copies of Picasa running with different databases?

Not at the same time. Picasa can only use one database location at a time. If you want to maintain separate photo libraries, you would need to use two different computers or user accounts, each with its own Picasa installation and database.