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This Add-on makes it possible to precisely control the size images in Google docs.
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Overview
This Add-on makes it possible to precisely control the width & height of images in Google docs. It currently only works with ‘In line’ images. I’m waiting for feedback by the Google API team to make it also work with ‘Wrap text’ and ‘Break text’. (have been waiting forever so don't think this is going to happen.)

Use the menu Add-ons->SetImageSize->show sidebar to activate. Then select an image in your document and select "get size" in the sidebar. Now change the size to your liking, then select 'Apply' to make the change.

If you get the error "ScriptError: Authorization is required to perform that action." then maybe you are logged into your browser with multiple accounts and Google script doesn't like that.
Aug 17th 2019
- added link to privacy policy
July 18th 2018
- clarified that only in-line bitmap images are supported (eg. Google drawings are not).
June 28th 2018 
- added function to retrieve original image size [1:1]. Should work with bmp, gif, jpeg and png.
- stopped decimal places in presets.
June 19th 2018 
- added an additional authorization to allow the sidebar to open. This was a breaking change that Google made and which stopped the add-on to work from June 7th.
Additional information
PricingNot available
Developer
Trader status unspecified
SupportNot available
Privacy policy
Terms of service
SetImageSize will ask for the permissions shown below. Learn more
SetImageSize will need access to your Google account
This will allow SetImageSize to :
View and manage documents that this application has been installed in
Display and run third-party web content in prompts and sidebars inside Google applications
Allow this application to run when you are not present
View and manage data associated with the application
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
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Monica Shaw
April 20, 2023
Can someone please create this for google slides too! As a designer I have to get lots of artwork approved in google slides and there is no way to control what size images place at directly in google slides. It's actually pretty ridiculous, why doesn't google build this in!
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Joshua Santos
February 19, 2023
Would be great if it has the functionality to resize ALL images at once in a file.
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JD
March 10, 2022
Hello ! Great app! Can you develop this app to google sheets too, please? Thanks
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Kimmo Keränen
October 28, 2020
I tried to set image to the original size, but "Get size" button reverses width and height, so I need to manually swap them. But still the size is not exactly as original. Maybe because I have dual display system, and copied the image from a display wit different DPI and Windows (10) scaling settings than the display I have the Google document.
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A User of SetImageSize
February 11, 2020
Like the interface. Easy to use and figure out. Would be nice to use with Warp text and Break text...
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A User of SetImageSize
September 22, 2019
Terrible. Once you click install it asks for your permission. Once you click that it loads for 2 seconds and then doesn't install it. If you click to go to the actual web store it says you have installed it but you cannot access it on your doc. Pointless and frustrating.
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A User of SetImageSize
June 5, 2018
Even though I select only one image in the "in line" state, I keep getting this error message: "Error: Please select one image. Currently only images that are set to 'in line' are supported due to a limitation in the Google API."
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Shea Smith
September 4, 2020
I just downloaded it and it keeps saying working when i try to show the sidebar but it wont load
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A User of SetImageSize
December 31, 2019
I couldn't believer google didn't made a option to set size manually.... i was resizing 50 images by hand to look the same size... Thank you for creating this.
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A User of SetImageSize
April 14, 2019
Excellent little tool, super helpful, works exactly as it should and pretty intuitive.
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