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Answered

Best downsizing method

Forum|Forum|4 years ago
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?

How to

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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?

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?

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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

S

Shahzaib26318848d3v3

Participant

Wah kya Baat Hai

Zesty_wanderlust15A7

Known Participant

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

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

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?

K

Kaj_EAuthor

Known Participant

Your Dropbox upload worked OK. The file you uploaded is only a cropped 3.64MB TIFF.

Can you upload the original 45MB image?

The architectural pattern in the middle of the mage is the problem. The rest of the image is satisfactory with normal downsizing. When it is downsized to the desired size, the pattern appears a diagonal lines on the area with the pattern.

Can the crop be downsized to 1/7 of its linear size and retain the pattern?

K

Kaj_EAuthor

Known Participant

Sorry for the typos. Shuld read downsized"

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