Skip to main content
K
Kaj_E
Known Participant
June 5, 2021
Answered

Best downsizing method

  • June 5, 2021
  • 4 replies
  • 3564 views

I have an 45 MP image I would like to downsize for the web, The image linear dimension would need to be downsized to 1/7 of original size. The image has plenty of small detail and an architectural pattern which does not hold up when downsized. This crop of the image would need to be downsized to 1/7 of linear size and keep the pattern intact. Is it possible?

This topic has been closed for replies.
Correct answer Nancy OShea

Thank you for your reply. Is there a way to convert the image froma  a raw file or tiff to a vector graphic in Photoshop?


quote

Thank you for your reply. Is there a way to convert the image from a raw file or tiff to a vector graphic in Photoshop?

=========

Sure.  But not to any degree of success.  Trust me, you wouldn't be happy with the results.  I tried it with a simple photograph below.  See screenshot.

 

 

For best results, re-trace your photo in Illustrator.  See link below.

https://www.stickermule.com/blog/how-to-use-image-trace-in-adobe-illustrator

 

4 replies

S
Shahzaib26318848d3v3
Participant
September 27, 2022

Wah kya Baat Hai

Zesty_wanderlust15A7
Zesty_wanderlust15A7
Known Participant
June 6, 2021

In PS, the "Nearest Neighbor" algorithm while downsizing could potentially come closest but it doesn't use interpolation, so anyone looking at it larger than 100% will see ugly aliasing...

Try this...

If you want a 150 px pic, downsample to 300 px with Bicubic Sharper. Then downsize to 150 px with Nearest Neighbor. You might get lucky it's not too bad when enlarging or keep some control with CSS maybe...

Just remembering this method is less ideal for architecture as it needs the interpolation more badly than a natural scene...

Nancy OShea
Community Expert
Nancy OSheaCommunity Expert
Community Expert
June 5, 2021

Go to File > Export > Export As > JPG (see screenshot). 

 

 

Keep in mind that reducing pixels removes information.  That's the problem with resolution dependant images.

 

 

Nancy O'Shea— Product User & Community Expert
    K
    Kaj_EAuthor
    Known Participant
    June 6, 2021

    The image should first be downsized to 1/7 of linear dimension. The image I posted is a crop of the original image. Can you downsize it to 1/7 of original linear dimension and still retain the architectural pattern in the center of the image?

    Nancy OShea
    Community Expert
    Nancy OSheaCommunity Expert
    Community Expert
    June 6, 2021

    You can resize your image in the export panel, too.  But an image with so few pixels will probably lose all the fine details.  That's the price you pay with pixel-based images.

     

    For this reason, architectural drawings are usually rendered in Illustrator as vector graphics which carries detail with very low bandwidth.  And because vectors are math-based instead of pixel-based, you don't lose any image quality when up or down-scaling.    On the web, I use SVG whenever possible for icons, charts, drawings, maps, comics, cartoon puppets, infographics and other flat colored images.

     

     

    Nancy O'Shea— Product User & Community Expert
    K
    Kaj_EAuthor
    Known Participant
    June 5, 2021

    Sorry for the typos. Shuld read downsized"

    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices