All posts in Herramientas
Htaccess Disable Hotlinking Code Generator
If people are ‘hotlinking’ to your image files, they are using your bandwidth which you will ultimately pay for.
You can stop this from happening by placing a ‘.htaccess’ file in the folder where your images are stored. This will only allow requests from your own pages to display the images – anyone linking to them from outside of your website, or any website you choose, will have the ‘red x’ instead of the image.
Use the following form to create the code to place into your htaccess file to stop people hotlinking your images/files. The code uses mod_rewrite.
DNS, SOA …
To an Administrator, there is nothing more peaceful than a stable and optimized DNS server. The moment there is a wrong configuration, the server wakes up and starts crying, sites and email goes down. An important part of keeping DNS that way is properly setting up the SOA records.
What are DNS Records. DNS records or Zone files are used for mapping URLs to an IPs. Located on servers called the DNS servers, these records are typically the connection of your website with the outside world. Requests for your website are forwarded to your DNS servers and then get pointed to the WebServers that serve the website or to Email servers that handle the incoming email.
400000 imagenes de la Tierra
La NASA ha organizado sus imagenes de la Tierra desde el espacio, en total + de 400.000 fotos a alta calidad de resoluci
Five New Communication Technologies to Supplement Email
Every business relies on effective communication with its customers. Communication doesn’t just convey information, it inspires trust, builds credibility, stimulates involvement and generates loyalty. But in today’s global, hi-tech, rapidly changing business environment, how do you ensure you’re communicating effectively?
The Benchmark – Face-To-Face
There’s no doubt that face-to-face communication is the most effective method for most people. Why? Because of its two-way nature. It’s about dialogue. Listeners are not passive participants. When someone talks to us, we send a continuous stream of responses back to them. Some are verbal, but many/most are not. These responses have the power to actually change the message being disseminated by the talker. What’s more, they have the power to change how other listeners’ interpret that message. (Similarly, other listeners have the power to change your interpretation.)
Unfortunately, however, the global nature of business makes it impossible to conduct face-to-face meetings for every communication. So what are the alternatives? Specifically, what are the alternatives offered by technology?
Domain Keys, DomainKeys Identified Mail
omainKeys is an e-mail authentication system (developed at Yahoo!) designed to verify the DNS domain of an E-mail sender and the message integrity. The DomainKeys specification has adopted aspects of Identified Internet Mail to create an enhanced protocol called DomainKeys Identified Mail (DKIM). This merged specification is the basis for an IETF Working Group which plans to guide the specification toward becoming an IETF standard.
DomainKeys is a method of e-mail authentication. Unlike some other methods, it offers almost end-to-end integrity from a signing to a verifying Mail Transfer Agent (MTA). In most cases the signing MTA acts on behalf of the sender, and the verifying MTA on behalf of the receiver.
DomainKeys is independent of Simple Mail Transfer Protocol (SMTP) routing aspects in that it operates on the RFC 2822 message — i.e., the transported mail data, header and body — not the SMTP envelope defined in RFC 2821.
Note that DomainKeys does not prevent abusive behavior; rather, it allows abuse to be tracked and detected more easily. This ability to prevent some forgery also has benefits for recipients of E-mails as well as senders, and “DomainKey awareness” is programmed into some E-mail software.
Since 2004, Yahoo! has signed all of its outgoing E-mail with DomainKeys and is verifying all incoming mail. As of 2005, Yahoo! reports that the number of DomainKeys-verified e-mail they receive exceeds 300 million messages per day.
Google also uses DomainKeys to sign emails sent from users of its Gmail service, actually going live with it about a month before Yahoo! did. The ISP EarthLink also uses DomainKeys.
From Wikipedia, the free encyclopedia:
DomainKeys Identified Mail is a method for E-mail authentication. It offers almost end-to-end integrity from a signing to a verifying Mail transfer agent (MTA). In most cases the signing MTA acts on behalf of the sender by inserting a DKIM-Signature header, and the verifying MTA on behalf of the receiver, validating the signature by retrieving a sender’s public key through the DNS.
The DomainKeys specification has adopted aspects of Identified Internet Mail to create an enhanced protocol called DomainKeys Identified Mail (DKIM). This merged specification is the basis for an IETF Working Group which has guided the specification towards becoming an IETF Proposed Standard.
Inkscape
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format. Supported SVG features include shapes, paths, text, markers, clones, alpha blending, transforms, gradients, patterns, and grouping. Inkscape also supports Creative Commons meta-data, node editing, layers, complex path operations, bitmap tracing, text-on-path, flowed text, direct XML editing, and more. It imports formats such as JPEG, PNG, TIFF, and others and exports PNG as well as multiple vector-based formats. Inkscape’s main goal is to create a powerful and convenient drawing tool fully compliant with XML, SVG, and CSS standards. Inkscape aims to maintain a thriving user and developer community by using open, community-oriented development process, and by making sure Inkcape is easy to learn, to use, and to extend.
Estadísticas de sitios Web / Análisis del tráfico de sitios
ActiveStat Estadísticas Web, un instrumento de marketing para seguir y analizar las visitas del sitio, investigaciones de mercado, seguimiento de visitantes y analizador de estadísticas.
Analog Es una herramienta gratis muy popular para el análisis de los ficheros log de los sitios web. Se incluye los progamas fuentes en código fuente C. Ejecutables disponibles para Windows y Mac. Facilita en procesamiento de fichos logs almacenados sin previo procesamiento. Utilizado cuando tenemos que hacer un estudio o análisis de métricas Web y sólo disponemos de ficheros logs almacenados por determinado espacio de tiempo.
Google Analytics Te informa de todo lo que necesitas conocer sobre cómo encontraron tu sitio web los visitantes y cómo interactuaron con este. Podrás enfocar tus recursos de marketing en campañas e iniciativas que incrementarán el ROI y mejorarán tu sitio web para obtener mayor conversión de sus visitantes. Desde finales del año 2005 se encuentra disponible en el mercado, las pruebas que he realizado con este me han sido satisfactorias pero hay comentarios con diversos puntos de vistas. Se está consolidando dentro de los software especializados en métricas Web.
LiveStats DeepMetrix Análisis escalable de sitios web y soluciones a los análisis de ficheros logs. Permite el seguimiento en línea de las actividades de los visitantes en el sitio web por lo que es muy útil para monitorear el uso del sitio en tiempo real. No es frecuente en el mercado español pero sí ha tenido amplía aplicación en sitios de medianas y pequeñas empresas en Canadá, EE.UU y Gran Bretaña. Fue adquirido por Microsoft. Todo parece indicar que para desarrollar un servicio parecido al que ya dispone Google con Google Analytics.
Nielsen Media Research Los servicios de Nielsen/NetRatings definen una norma global para la medición de las audiencias en línea. Con amplía cobertura mundial Netratings permite hacer análisis dell tráfico a nivel de país o por sectores por lo que es una herramienta útil para la realización de trabajos de inteligencia competitiva, entre otras muchas posibilidades. Han trabajado en el perfeccionamiento de su metodología para las evaluaciones de las audiencias online.
OneStat.com Servicios de análisis de sitios web y software para medir el comportamiento de los visitantes, informes de métricas web, seguimiento de campañas de publicidad online, etc.
OpenWebScope Software para estadísticas web en Windows. Analiza los ficheros logs de los servidores web y realiza informes detallados sobre visitantes/clientes con detalles de cada aspecto de su sitio web.
StatCounter Es un software gratuito altamente configurable para obtener detalladas estadísticas web en tiempo real.
WebSideStory Produce uno de los software de métricas web o de análisis web más poderoso en el mercado. HBX On Demand Web Analytics 2.5, obtuvo en febrero del 2005 la mayor puntuación en la categoría de los software dedicados a los análisis de sitios web. Este año el ranking elaborado por la Guía de las aplicaciones para análisis Web sitúa a HBX Analytical en la posición número 3 de 73 software evaluados. Recomendado por la comunidad de métricas Web.
WebTrends Se presenta como el líder mundial en análisis de sitios Web y de sus estadísticas. Ayuda a acelerar los índices de conversión de su sitio y el ROI de su Web. Es una de las herramientas más populares en el mundo del comercio electrónico y grandes portales. Recomendado para estos sitios, permitiendo un seguimiento de todas las actividades que realizan los visitantes en un sitio web.
Visual Sciences Recientemente adquirido por WebSideStory, Visual Sciences ofrece un grupo de aplicaciones especializadas en la elaboración de análisis inteligentes sobre el uso y explotación de grandes y complejos sitios web en Internet. Se presenta como la herramienta de análisis Web más innovadora y madura en el mercado, ofreciendo cientos de reportes y análisis que ayudan a la comprensión del uso de un sitio web. Una característica importante de sus aplicaciones para análisis web es la posibilidad de realizar análisis de los canales de Internet responsables del tráfico hacia el sitio web.
SOLUTION: PNG in Windows IE: Info & Links
Pros:
* Ignored as a comment in other browsers – it’s only run by Windows IE.
* Works with (X)HTML Strict & Transitional Doctypes
* Does not break W3C validation
* Lightweight and very easily deployed
* Works with existing in-line or external CSS rules based on class or ID selectors
* Works with old-style img align=”left” or align=”right” attributes
* Runs after any existing Body Onload code
* Works with imagemaps and input images using a special version
Cons:
* Doesn’t work in IE versions earlier than 5.5 – the AlphaImageLoader filter wasn’t introduced until version 5.5. There is no cure for earlier versions.
* Requires JavaScript to be enabled – the estimations for how many people choose not to use JS vary wildly. See note [1]
* CSS backround PNGs not supported – experimentation revealed I could traverse the Stylesheets collection and use the AlphaImageLoader trick to replace all background-image attributes containing PNGs, but then background-repeat would not work, and anchors placed over non-transparent parts of the image were not clickable 
* CSS rules for the PNG images based on the img selector are lost, but this is easily rectified by adding a class selector to your img rule such that img{..} becomes img,.png{..} – then add the attribute class=”png” to each of your PNGs.
http://homepage.ntlworld.com/bobosola/pnginfo.htm
JavaScript: DHTML API,
Do not forget to check this :
A Cross-browser JavaScript DHTML Library which adds Drag Drop functionality and extended DHTML capabilities to layers and to any desired image, even those integrated into the text Drag & Drop Image flow.
Window resize events! Image resize…
http://www.walterzorn.com/dragdrop/dragdrop_e.htm
