How to Change a Picture’s Date in Google Photos

Casey Smith uploaded a bunch of scanned images on Google Photos but they are showing the date when the scan was made and not when the pictures were captured. She writes: “Do you have any recommendation on how to re-date pictures that are not appropriately dated? I have a ridiculous amount of photos that are dated as of the date I added them to Google Pictures as opposed to the date they were actually taken. It’s driving me nuts. Any advise?”

There are two ways to deal with the problem. You can either change the date of photos before uploading them to Google Photos or do it after the photos are uploaded. The former option is recommended since it will let you modify the date and time of multiple photos in one go while the latter option would allow you to edit the timestamp of one image at a time.

Both Windows Photos Gallery and Apple Photos for Mac OS X allow you to easily edit a photo’s date and time. Open Photo Gallery on Windows, select one or more pictures by holding the CTRL key, click the date in the Info panel and choose the correct date from the calendar. In the case of Apple Photos, select one or more photos and videos from the gallery and choose “Adjust Date and Time” from the Image menu.

Alternatively, you can use a more powerful command like tool like ExifTool(available for both Mac and Windows) that can “shift” the date and time associated with images by a fixed amount. This is useful if you have taken pictures with a digital camera that had an incorrect time when the photos were taken so the dates can be shifted relatively.

If you’ve already uploaded the pictures on Google Photos, you can still edit the timestamp but you can only do that one image at a time. Also, the date editing option is only available on the Google Photos website and not inside their iPhone or Android apps (yet).

Go to photos.google.com and click on any photo. Next click the “i” icon to open the Info page and then click the pencil icon next to the date to modify the date and time of that photo. Tedious but works.

If you are to edit the date of multiple photos that are already on Google Photos, a less time-consuming option would be that you download them all to the desktop, delete the copy from Google Photos, empty the bin, edit the dates of images on the desktop and re-upload them to the Google Photos website.

And you would still need a desktop based photo editing program to add or edit the geolocation data since Google Photos doesn’t support that yet.

How to Change the Date of your Digital Photographs

John Q. Public has just finished importing the videos and pictures from the digital camera to his laptop but realizes that the media files are incorrectly time-stamped.

Maybe the date and time settings of his “point and shoot” camera were set incorrectly or maybe the digital camera was stamping the files with local time though the pictures were being shot in another country with a different time zone. He probably forgot to change the time stamp of the camera before going on vacation.

How does John change the data and time of his pictures?

Most image editing software, Picasa and iPhoto included, allow you corect the data and time of photographs imported from a digital camera or a smartphone. You can import your digital photos in the software and select the ones that need to be fixed.

In the case of Picasa, choose Tools -> Adjust Date & Time and select a new date for your photos. This will change the “Date Picture Taken” field in the EXIF data of you picturs. Similarly, iPhoto users can choose Photos -> Adjust Date & Timeto set the selected photos to a particular date and time.

I however prefer a little-known command line utilitly called ExifTool for such operations since it is much more versatile. To get started, download the ExifTool executable and extract the zip file to your desktop. Now rename the exiftool(-k).exe utility to exiftool.exe and we are all set to adjust the date and time of our photographs.

Unlike the iPhoto or Picasa software that simply set the date and time of a photograph to another time stamp, Exif Tool can “shift” the data and time values associated with a picture. For instance, if your camera’s time was off by 2 hours 30 minutes at the time of capture, you can use ExifTool to shift the time stamp of all your pictures only by that “off” duration.

The sytax is:

exiftool.exe "-DateTimeOriginal+=Y:M:D h:m:s" filename.jpg

For instance, if wish to shift the time of photographs by 5 hours and 30 minutes, the command would be:

exiftool.exe "-DateTimeOriginal+=0:0:0 5:30:0" filename.jpg

And if you wish to perform a negative shift by 1 day, the command would be:

exiftool.exe "-DateTimeOriginal-=0:1:0 0:0:0" filename.jpg

Please refer to this document for the exact syntax and other examples.

exiftool.exe "-AllDates+=Y:M:D h:m:s" filename.jpg

Exif Tool makes a copy of your original photograph before updating the time stamp. The tool is free and available for Windows, Mac and Linux.

Download Mac Updates Once and Install on Multiple Computers

Mac OS X updates are huge with the installation files running into several gigabytes. The same is true for Mac apps like iMovie or Microsoft Office that have massive installers. The problem is compounded when you own multiple Mac computers and you need to upgrade them all to the latest OS X update. It will not just take too much time but you may end up consuming your monthly download bandwidth

A simple and obvious workaround to the problem is that you download the installer files on one Mac machine and then transfer the downloaded apps to all your other systems through AirDrop or WiFi. The Apple website says that “Apps [downloaded] from the Mac App Store may be used on any Macs that you own or control for your personal use.” This is however easier said than done.

Install Mac OS X Updates on Multiple Macs

You download a 5 GB Mac OS X installer from the App Store, the machine restarts, your system is upgraded to Mac OS X Yosemite or El Capitan but wait, where has the installer disappeared? Your Mac, in a bid to save space, deletes the original installer automatically after the upgrade and thus you cannot reuse it on other machines.

To get around the problem, after the installer has downloaded, quit the installation routine and do not restart the machine. Go to the ~/Applications folder on your Mac, find the installer file and Option+Drag it to another folder like ~/Downloads to make a copy that will stay even after the machine is restarted.

For minor updates, like OS X 10.10.8 or 10.10.9 updates, Apple releases standalone installers as .dmg files that you can download once and install on multiple machines. The releases are available as incremental updates (containing only changed files) or combo updates (all changed files since the last major release).

A simple Google search for “download mac ox x 10.10. combo” will reveal the direct download links for the .dmg files on the Apple support website.

Install Mac Apps from the App Store

In the case of apps downloaded from the Mac App Store, you’ll find the .app files in your /Applications or /Users/username/Applications folder that you can easily copy to your other Mac machines. Internally though, the App Store downloads the installer as a package file (with a .pkg extension) and this will not reside in the Applications folder but in a separate hidden folder.

You can grab these Installer Package files and install the same Mac app on other machines without having to download it again thus saving data. To get started, open terminal on your Mac and run the following command to know where the App Store has downloaded the installer files:

defaults write com.apple.appstore ShowDebugMenu -bool true

Now open the Mac App Store app and you’ll see a new Debug menu (see screenshot). Click the “Show Download Folder” menu and it will open the location of the download folder inside Finder where the Mac apps are temporarily download. You can find the .pkg files inside one of the sub folders that you copy to your other Mac systems via Airdrop.

[Bonus Tip] If you are upgrading to a new version of Mac OS X, like the upcoming El Capitan, press Cmd+L at the installation screen and it will open the installation log so you know what’s exactly happening behind the scene.

How to Print Multiple Gmail Messages in one go

John Q. Public is an attorney at a law firm and, as part of an ongoing litigation, the court has asked their clients to produce hundreds of email conversations associated with a case as hard copies. They are using Gmail with Google Apps and all the emails are safely stored in the mailbox but how to automatically print them all on paper?

Gmail doesn’t offer an option to print multiple email threads in a batch but that feature is available in Microsoft Outlook, the desktop program. You can import Gmail emails into Outlook, select several messages and then hit the Print button. Outlook will group all the selected email messages into a single PDF file or you can send them directly to any connected printer.

There’s an alternate approach as well. You can select multiple emails in Gmail and apply a common label. Next use an add-on to save these emails as neatly-formatted PDF files into your Google Drive. Once the PDFs are ready, you can either print them through Google Cloud Print or download the PDF files to the desktop and print to the local printer.

Here’s a step by step guide on how to print email messages and attachments in Gmail in bulk:

1. Go to Gmail, select one or more email threads and apply a common label (like To Print) to all the selected email threads.
2. Go to Google Drive and create a folder, say Gmail Files, where the selected Gmail messages would be stored as PDFs.
3. Download and install the Save Emails add-on for Google Sheets.
4. Inside the Google Sheet, go to Add-ons > Save Emails and Attachments > Create New Rule. Here select the Print Gmail label from the dropdown and then select your Google Drive folder.

Click the Create Rule button button and the add-on will save your marked Gmail emails into Google Drive every hour. Or you can go to the Manage Rulesmenu and run a rule manually to immediately save the marked email threads (including attachments) into Drive.

Once all the emails have been saved, right-click the “Gmail Files” folder in Google Drive, and choose Download to save all emails to your desktop. And now you can send them all the emails to the printer with the simple Ctrl+P or (Cmd+P on Mac) keyboard shortcut.