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Offlineastralasia
UK_shroomhead

Registered: 07/17/04
Posts: 119
Loc: UK
Last seen: 17 years, 2 months
Reduce image file size quickly and very easily
    #2947468 - 07/31/04 03:35 AM (19 years, 7 months ago)

I have just discovered this and can't really explain how it works, but hey, who cares. I had a JPG photo that I wanted to upload but it was to big at 240kb. All I did was open it up in MS paint and saved it as a different file name as a JPG. The file size was reduced to 75kb! The image quality seemed identical to me but it makes it much easier to upload and quicker for people viewing the thread. Try it for yourself and let me know if it works for you.

Edited by astralasia (07/31/04 08:58 AM)

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Anonymous

Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2947492 - 07/31/04 03:55 AM (19 years, 7 months ago)

Do you mean that it had a different extension, rather than being a jpg it wound up a bmp? The default file format for ms paint is bmp I believe. If so, it worked because a bitmap (bmp) is a much older format, and doesn't have the same quality as a jpeg. So it would naturally be a smaller file.

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Offlineastralasia
UK_shroomhead

Registered: 07/17/04
Posts: 119
Loc: UK
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Re: Reduce image file size quickly and very easily [Re: ]
    #2947517 - 07/31/04 04:18 AM (19 years, 7 months ago)

No quite the opposite, bitmaps are much much larger files than JPG's. All I did was open a JPG and go file "save as", select JPG from the dropdown list and changed the file name! It has saved as .jpg file extension. I think it is because the camera saves the photo with greater resolution but to be honest, I can't tell the difference.

Edited by astralasia (07/31/04 09:03 AM)

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OfflineLocus
Male

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Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2948466 - 07/31/04 12:32 PM (19 years, 7 months ago)

cool.. you know you could also go to sketch and skew and change the percentages there


--------------------

The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity. ~ Albert Einstein
"Fear is the great barrier to human growth." ~ Dr. Robert Monroe



~~~*Dosis sola facit venenum*~~~

*Check my profile to listen to my music* :smile:

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Invisibledaussaulit
Forgetful

Registered: 08/06/02
Posts: 2,894
Loc: Earth
Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2948488 - 07/31/04 12:40 PM (19 years, 7 months ago)

I just tried it, it works, I got Paint to reduce a 1.53meg jpg into a 411kb jpg, and it looks about the same. I could get that same 1.53 meg jpg into a 289kb jpg in photoshop, and the quality looks the same to me. I'll stick with photoshop.

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Offlinefredthetree
Stranger

Registered: 09/29/02
Posts: 473
Loc: Canada
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Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2948832 - 07/31/04 01:54 PM (19 years, 7 months ago)

better yet: download gimp and export to png, changing the compression settings however you please.

http://gimp.org

another fun thing is using zlib compression on bitmaps -- most things are competent enough to unzip on the fly (or pipe the output, or whatever it's doing)

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OfflineMurex
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Registered: 07/28/02
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Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2954221 - 08/01/04 11:06 PM (19 years, 7 months ago)


It's gotta reduce the quality of the pitcure. But if you don't care about quality.....


--------------------
What if everything around you
Isn't quite as it seems?
What if all the world you think you know,
Is an elaborate dream?
And if you look at your reflection,
Is it all you want it to be?


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Offlineastralasia
UK_shroomhead

Registered: 07/17/04
Posts: 119
Loc: UK
Last seen: 17 years, 2 months
Re: Reduce image file size quickly and very easily [Re: Murex]
    #2966911 - 08/05/04 05:10 AM (19 years, 7 months ago)

Try it Murex, i can't see any obvious reduction in quality and it makes the difference between being able to post a picture or not. This is supposed to be a tip to help people who may not have much computer experience.

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OfflineAnnoA
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Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2967702 - 08/05/04 11:52 AM (19 years, 7 months ago)

An easy freeware programm to acomplish this is IrfanView

http://www.shroomery.org/index/par/23402

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OfflineGeezer
experimental

Registered: 07/18/04
Posts: 71
Loc: UK
Last seen: 18 years, 4 months
Re: Reduce image file size quickly and very easily [Re: Anno]
    #2972211 - 08/06/04 02:02 PM (19 years, 7 months ago)

My tool of choice, if you come across it.
Macromedia Fireworks is easy and fast at reducing image quality. Reducing the quality to 80% chops a fair bit off the size in KB and there's not really any noticeable reduction in quality. Although Photoshop is cool also.

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Invisibleeric_the_redS
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Registered: 02/28/03
Posts: 14,472
Loc: happy land
Re: Reduce image file size quickly and very easily [Re: astralasia]
    #2972674 - 08/06/04 04:21 PM (19 years, 7 months ago)

i stumbled across that trick a while back. i also have no idea how it works either. you're right; there is no noticeable difference in picture quality.

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OfflineAnnoA
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Re: Reduce image file size quickly and very easily [Re: eric_the_red]
    #2974907 - 08/07/04 08:21 AM (19 years, 7 months ago)

>i also have no idea how it works eit

It is no trick, it seems that the quality setting of MS Paint is simply set to a setting lower than that of your original picture.

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