A

Anonymous

Question

How to reduce JPEG file size

Forum|Forum|8 years ago
August 28, 2017
7 replies
57977 views

Hey folks,

I do have a file with just one layer and a size of about 20 x 15 cm at 300 dpi.

If I safe that file as a JPEG, the JPEG becomes about 30 MB large.

Does anybody know, how I may reduce the file size without reducing the dpi as well as the quality of that JPEG?

Do I have to change some pre settings or is there an other way?

By the way, I work with OS X Yosemite on my MAC and Photoshop CC.

Thanks in advance.

Regards Nina

How to

L

Lumigraphics

Legend

This is a seven year old post and you are spamming a link to a website.

billyr80792616

Participant

File > Export > Save for Web (Legacy)

Then you can choose JPEG High, Medium, or Low to adjust the image size

This option works best!

jonathancribeiro

Participant

How To Reduce Image Size without Losing Image Quality in Photoshop - YouTube

This video does a good job at showing how to reduce the file size

Derek Cross

Community Expert

Save for Web in Photoshop CC 2015

angie_taylor

Legend

I still love the Save for Web (Legacy) feature if I really. need to get the file size down. It allows for more experimentation with compression settings. You could also try GIF. If the colours are fairly flat it can be a good option. You can rereduce the file size are you reducing the number of colours that are used in the image. You can also try PNG to see if that gives you better results. If you do need to use JPEG then the save for web feature gives you a better amount of control and the standard savers JPEG option.

Hope this helps,

Angie Taylor – Creative Cabin

c.pfaffenbichler

Community Expert

If I remember correctly Photoshop embeds no Colour Profiles in Save for Web-created PNGs and GIFs, so depending on circumstances that could be a risky choice.

D Fosse

Community Expert

Actually they fixed that for PNG, both in Save For Web and Export. They both embed the profile now. As long as you remember to check the box, of course. Why it should be unchecked by default is still a mystery.

GIF I don't know, I suspect the format doesn't support icc profiles in the first place.

D Fosse

Community Expert

There is no free lunch. To reduce file size, you either have to reduce pixel dimensions, or increase the jpeg compression rate.

That said, it sounds as if you're setting quality to 12/max. There's never any reason to do that - if you need that high quality, you wouldn't use jpeg to begin with. You'd use TIFF.

A quality setting of around 8 is usually good enough, while at the same time reducing file size dramatically.

EDIT: forgot all about the metadata issue. Yes, check that first.

c.pfaffenbichler

Community Expert

Is there superfluous Ancestors Metadata (see File > File Info > Raw Data)?

Inflated JPG File Size - Photoshop Document:Ancestors Metadata

Stephen Marsh

Community Expert

That would be my guess as well:

Prepression: Metadata Bloat – photoshop:DocumentAncestors

c.pfaffenbichler

Community Expert

Yeah, there seem to have been a couple of threads on this lately.

Though I am still unclear on how exactly that problem gets triggered originally, when and how an individual file starts accumulating the offending metadata like this.

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