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zlib.net

Website review zlib.net

 Generated on April 02 2021 12:41 PM

Old statistics? UPDATE !


The score is 48/100

SEO Content

Title

zlib Home Site



Length : 14

Perfect, your title contains between 10 and 70 characters.
Description



Length : 0

Very bad. We haven't found meta description on your page. Use this free online meta tags generator to create description.
Keywords



Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
Headings
H1 H2 H3 H4 H5 H6
1 0 5 1 0 0
  • [H1]
  • [H3] A Massively Spiffy Yet Delicately Unobtrusive Compression Library (Also Free, Not to Mention Unencumbered by Patents)
  • [H3] zlib Information
  • [H3] CRC (Cyclic Redundancy Check) Bonus Information
  • [H3] ZIP File Processing Bonus Software
  • [H3] Related External Links
  • [H4] (Not Related to the Linux zlibc Compressing File-I/O Library)
Images We found 86 images on this web page.

Good, most or all of your images have alt attributes
Text/HTML Ratio Ratio : 19%

Good, this page's ratio of text to HTML code is higher than 15, but lower than 25 percent.
Flash Perfect, no Flash content has been detected on this page.
Iframe Great, there are no Iframes detected on this page.

URL Rewrite Good. Your links looks friendly!
Underscores in the URLs We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
In-page links We found a total of 94 links including 25 link(s) to files



Anchor Type Juice
Mark Adler External Passing Juice
PNG Home Page External Passing Juice
Jean-loup Gailly External Passing Juice
Change Log Internal Passing Juice
free Internal Passing Juice
another page Internal Passing Juice
Info-ZIP External Passing Juice
Zip External Passing Juice
UnZip External Passing Juice
PKWARE External Passing Juice
Dr. Dobb's Journal External Passing Juice
US (zlib.net) Internal Passing Juice
GPG signature Internal Passing Juice
Pick a mirror (prdownloads.sourceforge.net) External Passing Juice
US (zlib.net) Internal Passing Juice
GPG signature Internal Passing Juice
Pick a mirror (prdownloads.sourceforge.net) External Passing Juice
US (zlib.net) Internal Passing Juice
GPG signature Internal Passing Juice
Pick a mirror (prdownloads.sourceforge.net) External Passing Juice
US (zlib.net) Internal Passing Juice
Pick a mirror (prdownloads.sourceforge.net) External Passing Juice
libpng External Passing Juice
PNG-supporting applications External Passing Juice
Zlib-announce mailing list Internal Passing Juice
Zlib-devel mailing list Internal Passing Juice
FAQ Internal Passing Juice
manual Internal Passing Juice
zlib Usage Example Internal Passing Juice
RFC 1950 ZLIB Compressed Data Format Specification version 3.3 External Passing Juice
RFC 1951 DEFLATE Compressed Data Format Specification version 1.3 External Passing Juice
RFC 1952 GZIP file format specification version 4.3 External Passing Juice
Deflate stream disassembler. External Passing Juice
zlib's Deflate Algorithm Internal Passing Juice
zlib's deflate flush modes External Passing Juice
All released versions of zlib Internal Passing Juice
zlib on github External Passing Juice
Ross Williams' classic "A Painless Guide to CRC Error Detection Algorithms" Internal Passing Juice
Code to generate any CRC, with a list of CRC descriptions. External Passing Juice
Code to modify a message so that it generates the desired CRC. External Passing Juice
Code to read a zip file as a stream and extract its contents. External Passing Juice
Code to merge multiple zip files into a single zip file. Internal Passing Juice
unofficial (contributed) patches and binaries Internal Passing Juice
match.asm for i686 and MASM 6.x Internal Passing Juice
static plus headers External Passing Juice
zlib for HP-UX 10.20 and 11.00 External Passing Juice
HP-UX 10.20 External Passing Juice
HP-UX 11.00 External Passing Juice
zlib for SGI Irix 6.x External Passing Juice
Irix 6.2 External Passing Juice
Irix 6.5 External Passing Juice
zlib for Solaris External Passing Juice
zlib for Digital Unix 4.0 External Passing Juice
zlib for Palm Pilot External Passing Juice
zlib for Newton OS External Passing Juice
zlib for Windows CE External Passing Juice
zlib for Windows 9x/NT/2000/XP/2003 External Passing Juice
zlib for Windows 9x/NT External Passing Juice
DotNetZip External Passing Juice
zlib for .NET in C# External Passing Juice
zlib DLL wrapper for .NET in C# External Passing Juice
Zip for .NET External Passing Juice
Mark Nelson External Passing Juice
ZlibTool article External Passing Juice
zlib C++ wrapper External Passing Juice
C++ zlib and gzip filters External Passing Juice
VB5 binary External Passing Juice
zlib Delphi 5 interface External Passing Juice
zlib Perl interface External Passing Juice
zlib Python interface External Passing Juice
zlib Tcl interface External Passing Juice
zlib Tcl interface External Passing Juice
zlib Haskell interface External Passing Juice
zlib reimplementation in pure Java External Passing Juice
JavaZip article External Passing Juice
Random access for gzip archives, for Java External Passing Juice
Gilles Vollant External Passing Juice
mini-zip and mini-unzip External Passing Juice
Scott Ludwig External Passing Juice
CExe executable compressor External Passing Juice
Gilbert Baumann External Passing Juice
zlib technical issues, including spec errors External Passing Juice
zlib information in Japanese External Passing Juice
zlib information in Russian Internal Passing Juice
LZO `real-time' data compression library External Passing Juice
lz4, a very fast compression algorithm External Passing Juice
Zstandard, a better compression algorithm External Passing Juice
libbzip2 External Passing Juice
PPP Deflate Protocol External Passing Juice
Compression Pointers External Passing Juice
DataCompression.info External Passing Juice
comp.compression Frequently Asked Questions list External Passing Juice
PGP key External Passing Juice
Jean-loup Gailly External Passing Juice

SEO Keywords

Keywords Cloud page compression version interface zlib key format list fix bug
Keywords Consistency
Keyword Content Title Keywords Description Headings
zlib 36
list 6
page 6
interface 5
version 5

Usability

Url Domain : zlib.net
Length : 8
Favicon Great, your website has a favicon.
Printability We could not find a Print-Friendly CSS.
Language You have not specified the language. Use this free meta tags generator to declare the intended language of your website.
Dublin Core This page does not take advantage of Dublin Core.

Document

Doctype HTML 4.01 Transitional
Encoding Perfect. Your declared charset is ISO-8859-1.
W3C Validity Errors : 61
Warnings : 3
Email Privacy Great no email address has been found in plain text!
Deprecated HTML
Deprecated tags Occurrences
<CENTER> 1
<FONT> 4
<tt> 18
<TT> 2
Deprecated HTML tags are HTML tags that are no longer used. It is recommended that you remove or replace these HTML tags because they are now obsolete.
Speed Tips
Excellent, your website doesn't use nested tables.
Perfect. No inline css has been found in HTML tags!
Great, your website has few CSS files.
Perfect, your website has few JavaScript files.
Perfect, your website takes advantage of gzip.

Mobile

Mobile Optimization
Apple Icon
Meta Viewport Tag
Flash content

Optimization

XML Sitemap Missing

Your website does not have an XML sitemap - this can be problematic.

A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.
Robots.txt http://zlib.net/robots.txt

Great, your website has a robots.txt file.
Analytics Missing

We didn't detect an analytics tool installed on this website.

Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.

PageSpeed Insights


Device
Categories


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