General Databases (1) Linux (14) Outside the Cube (31) Programming (63) Web publishing (134) about DelphiFAQ (14) JavaScript (31) perl CGI (65) VBScript (131) Web Hosting (270) Windows (306)
Exchange Links About this site Links to us
 
|
General :: Web publishing
Information about web publishing, how to maintain, optimize and promote a web site.
Articles:
This list is sorted by recent document popularity (not total page views).
New documents will first appear at the bottom.
Recommended links on this topic: Featured Article
Saving images as PNG or GIF?Question: Should I save our web site's images as .PNG or as .GIF images?
Answer: In the far past, GIF was the standard for non-photographic images while JPEG was for photographic images. The reason is that GIF only allows 256 colors and its compression algorithm is more suited for computer drawings such as buttons, lines etc. The JPEG algorithm is very bad at such graphics e.g. it will have a big quality problem with compressing an image that consists of a thin black line on white ground. GIF would be ideal for that. JPEG on the other hand is ideal for compressing a photo of a sunset with no visible loss. (It does lose many pixels' exact color information but not visible to the human eye.)
After GIF had become a standard, the US based company Unisys remembered that they had a patent on the LZW compression algorithm which is used in GIF. They charged a fee for any application that could read or write GIF images. Note: The Unisys LZW patent expired in the USA on June 20, 2003. It also expired in Canada, France, Italy, Germany, the United Kingdom, and Japan.
For that reason in 1995 an alternative for GIF was created: PNG.
PNG is like GIF lossless, meaning very suitable for computer graphics. It compresses better than GIF though, in almost all cases. PNG also allows more than 256 colors plus it allows variable transparency (alpha channel). PNG allows to store correction factors for brightness (gamma factor) and color hue (GIF does not).
When PNG came out, it was questionable if it was going to be successful simply because GIF images were everywhere and supported by all software (even though the publisher had to pay a fee to Unisys then, even if it was freeware).
However, since ~ 2000, all browsers support PNG, meanwhile even the dreaded Internet Explorer does it error-free.
Therefore I recommend using PNG images for new projects.
Visit http://www.libpng.org/pub/png/pngstatus.html to see about the status of PNG support and development.
| Generated 20:01:40 on Dec 6, 2019 | Most recent comments
2019-12-06 19:48:36:
by [hidden]
in Other Scams
on The UK NATIONAL LOTTERY scam:
diazepam and excessive sweating mgdiazepam.com
<a href=' https://mgdiazepam.c..t;diazepam 2mg</a>
does diazepam work well with celexa
[url= https://mgdiazepam.c../#]diazepa ... read more
|
2019-12-06 19:41:58:
by [hidden]
in Dating Scams
on Dating scammer Elena Mulina:
Russian women scam, girls black list, dating scammer ELENA MULINA ...
www.antiscamclub. com › scam_pages âscambrowse3
Russissian girls scammers black list dating fraud. 1, Dating . ... read more
|
2019-12-06 16:48:25:
by anonymous
in Dating Scams
on Dating scammer Osei Kwesi Accra Ghana kind_osei@hotmail.com from Accra, Ghana:
I found Ann Angel on Odnoklassniki, this profile
https://ok.ru/mess. 142366255
he>her fake name Alexandra Maria
|
2019-12-06 05:46:57:
by 2009helena@wp.pl
in Male Dating Scammers
on Dating scammer Allard Haggard:
Poznałam Morgana Lopeza na portalu ,,Sympatią,, oficer na Misji Pokojowej w Libii w mieście Bengazi, pochodzi z USA wysłał kilka zdjęć, a pozostałe jest ich mnóstwo, znalazłam w internecie. ... read more
|
2019-12-04 17:25:33:
by anonymous
in Dating Scams
on Gold digger Valeria Novitskaya from Ukraine:
Why do you need to find her.?. She will only meet you if you pay for everything plus a lot of dollar's.
She use to be on all the dating sites. Anastasia and Hot Russian Brides were her main ones b ... read more
|
2019-12-02 14:53:33:
by [hidden]
in Dating Scams
on Dating scammer Anastasiya Popova from Kirov, Russia:
Scammer Profile Anastasiya Popova | Anastasiya_993_5t0pf ...
https://www.huntscammers. com âscammer- 7926-scammer-anastastasiya-pop...
Scammer Profile Anastasiya Popova | Anastasiya_993_5t ... read more
|
2019-12-02 14:41:23:
by [hidden]
in Dating Scams
on Dating scammer UADREAMS.COM and UALADYS.COM:
Search Results -Web results
Scammer Natalia Lomakina Natasha - DatingScams.cc
https://datingscams. cc › scammer › profile
Nov 2, 2019 - Natalia Lomakina, , professional Local ... read more
|
|
2019-12-01 07:39:16:
by anonymous
in Dating Scams
on Another unnamed dating scammer:
Yep
|
2019-11-29 21:36:28:
by anonymous
in Male Dating Scammers
on Dating scammer kelvin williams:
WHY ARE YOU SENDING HIM MONEY???
the crime here is stupidity of people putting money in his account
|
2019-11-29 16:30:15:
by anonymous
in Dating Scams
on Dating scammer Nadya from Kstovo, Russia:
For those that are gay, gaycupid.com has a lot of fake profiles of gay men from Russia playing the same game, they don't have a phone or what's app and can only do email, yet they have 5 billion pictu ... read more
|
|