Yahoo Groups archive

Homebrew PCBs

Index last updated: 2026-04-28 23:05 UTC

Message

Re: [Homebrew_PCBs] Re: Toner Print quality

2009-03-14 by Donald H Locker

JPG is quite poor at rendering images with sharp edges, so I would stick with 
GIF or PNG.  The JPG compression algorithm leaves what I think of as "visual 
echoes" or ripples in the image.  These are invisible in photographs, but stand 
out with a vengeance in high contrast images with sharp edges.

Please note that I am very colour blind and see things differently.  I have many 
times experienced poor monitor quality (where I see obvious image artifacts) 
that others don't have any problem with.

BMP is a an uncompressed format (i.e. bloated) and proprietary to M$, though 
many programs can display such images.

Donald.

trevwhite74 wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "Steve" <alienrelics@...> wrote:
>> I'm sure the 0% part is a temporary bug.
>>
>> It isn't as much the size of a BMP as it is the potential difficulty in viewing them from a browser. JPG, PNG, and GIF are viewable directly from the browser, where formats like BMP and TIF may require either an external viewer or extra plug-ins.
>>
>> Steve Greenfield
>>
> 
> Did not realise that about BMP. That is a note for the future. Thanks. Have now added some proper desriptions. Thanks. 
> 
> Hopefully people can view them now and actually now what I am talking about. 8\ufffd)
> 
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.