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Three online tools you need when dealing with PDFs

PDF is the most popular document format. It allows to save even the most complex layout and open it on any compatible device. It allows saving high-quality documents with texts, tables, and images. You can also add the font display the document correctly.

Working with this format, you may require to join several documents into one, split one document into several pages, or just convert it into the image.

How to combine multiple PDFs:

Combine PDF is a great tool for combining multiple PDF files into one document. Its special algorithms allow you to extract the information stored in the file and convert it without losing data and quality.

Combine PDF allows you to work very quickly with PDF documents of any complexity. Without problems, you can merge large files and an almost unlimited number of pages. The service also does not limit the number of processed documents.

The tool works on any device with Internet access and on any operating system. The service is completely free and does not contain hidden fees. In addition, the platform has an intuitive interface. Therefore, even a beginner can use them.

To merge documents into one, you need to upload all the documents to the server, and then click the Join! button to process. In a few seconds, you will be able to download the processed result by the link.

How to split PDFs into their pages:

Sometimes, if the PDF document is too large, you need to extract a few pages from it. Unlike other document formats, PDF does not allow you to copy the contents of the page without losing formatting and quality. In addition, very often the document creator generally blocks this feature. Thanks to Split PDF, you have such an opportunity.

This is a very fast, easy and reliable tool for splitting a PDF document into several pages. There is no limit on the number of pages, and also their quality. The processing will take a few seconds, and you will be able to download only those pages that you need. Also, you can download the archive with all the files.

The service works on any device with Internet access and on any operating system. It is completely free and does not contain hidden fees.

How to convert PDF to JPG:

In some cases, you need to publish several pages of a PDF document on the website. As you know, on the Internet the most popular format is JPG. It is supported by absolutely all devices without installing additional software. The pdf2jpg tool allows you to quickly, in a few seconds, convert a PDF into a JPG image. You can process the file with any number of pages. In addition, you will be able to download each of them separately. If you need them all, upload them as an archive.

To use the tool, on your device, select the PDF document and click on the button to convert. In a few seconds, you will be able to work with inverted files.

Using these three tools will greatly facilitate your work with files in PDF format. We are sure that you will not have any problems when working with them.

Different ways to optimize images for your website

Creating graphics and publishing them on your website can be considered as an important part of web development. However, you need to focus on the performance of your website when you are publishing images as well. For example, when you post heavy graphics on the website, the performance of it would be impacted negatively. As a result, you need to be careful enough to optimize your images in order to get the best possible results at the end of the day.

What is meant by image optimization? Image optimization can simply be defined as the process of compressing your images, so that the quality of them and performance of your website would not be impacted. Therefore, image optimization is not all about making the files smaller. Many different methods are available for the website owners in today’s world to compress their images. One of the popular optimization methods involves using color combinations in order to give life to similar colors. Under this method, colors that are not needed for a specific image would be discarded. This can create the least impact on the quality of your image.

When it comes to image optimization, you will need to take a special look at the quality and size. You must be interested in getting the smallest possible image size for your website. This would give you the opportunity to make your website much faster. However, you don’t want to expose a pixelated image on your website because it can create a negative impact on the user interface. As a result, you will need to make sure that you find the perfect balance in between the quality and size when you are compressing the image.

Sometimes, you will not be able to get a good idea about the perfect balance in between quality and size. That’s why you should never think about optimizing the images on your own. If you try to do it, you will be spending a considerable amount of time and effort as well. In other words, you would open up an image processing tool, play around with the features and struggle hard to end up with the most optimized image. Why do you want to go through all that hassle when you can simply use an online tool to optimize the images?

If you are looking forward to get hold of a free online tool to get your images optimized, Compress JPG and Compact PNG are some of the best options available for you to consider about. As the names suggest, these two websites can be used to optimize your JPG and PNG files respectively. You would be using only these two types of graphics files on your website, so you can easily get your work done with the assistance of them. These websites have been provided with a simple and a user friendly layout as well. Therefore, you can think about using them without keeping any doubts in your mind.

Smart online PDF Tools: All you wanted ever to do with PDF Files

Working with PDF files

PDF (Portable Document Format) files can vary from a basic single-page file to more complex files such as brochures, data sheets, white papers and technical manuals, some containing countless pages, making them very difficult to deal with. To access the details, you need to read, print, publish and share, which can end up being a challenge and very time-consuming. Having a PDF energy to reduce and streamline your workflow is necessary.

Why do you Have to Merge the Portable Document Format Files?

Portable Document Format is a computer application which can be added smoothly to develop a fresh new document. A person can create a single and compact file format. In this method, you can juxtapose different chunks of useful info and integrate them through a single file. A person can share these merged PDF documents with the physically distant users. During the procedure of combining the PDF documents, the original format of the file stays intact. Simply put, a person can create a fresh new file in such a way that the fonts and other content aspects remain unblemished and intact. In the modern environment, individuals are needed to produce and prepare documents on different subjects with speed and performance. The capability of the PDF file format to merge saves time to develop a single and compact file from smaller-sized PDF files.

Other Operations like splitting or converting

Also for any kind of other PDF related operation the Series of converts lead by Join PDF provides a suitable tool. Check them out yourself!

More of these handsome PDF converters will follow soon so stay tuned and happy converting and editing your PDFs.

Mysql: How to clone a table removing duplicate entries

If you have a table in MySql having duplicate entries an you want to remove these duplicate entries you can do that by cloning the table. In MySQL this can be obtained by the following one liner:

CREATE TABLE new table (  `ID` int(11) NOT NULL AUTO_INCREMENT, `col1` int(11) NOT NULL, `col2` varchar(1000) NOT NULL,`col3` varchar(255) NOT NULL,`col4` varchar(30000) NOT NULL, PRIMARY KEY (`ID`)) SELECT DISTINCT * FROM oldtable;

The column definitions are just for demonstration purpose and have to be identical with the original table. By the SELECT DISTINCT query you obtain a copy of the table without duplicate entries.

What to do if you get a bash: /usr/bin/rm: Argument list too long error.

If you have directories which you contain millions of files you might get in trouble when you want to apply an operation on a bunch of files. For example rm *.jpg will not work in that case due to memory limits.

An easy way is you to use find for the job you want to do:

If you want to move all files in a directory which have the extension jpg.gif to gif only  you can use the following command:

> find -name “*.gif.jpg”  -exec mv ‘{}’ jpg \;

Another useful application is to easily remove all files with the extension .jpg

This can be done with the following command:

> find -name “*.json”  -exec rm ‘{}’ \;

In principle you can apply find to any other job you want to perform.

Howto Dump the Structure of a Msql Table

If you need to transfer a MySQL table to another Server it may be very useful to dump a create statement and then simply execute it on the new server. Like that you can easily clone you MySQL table. One can dump the structure with a simple command.

> show create table _tabellenname_

Thats it!

Howto add a Login with Facbook/Google Plus Botton to a Website

Many sites offer Login with Facebook or Google+ features in order to make it easier for new users to connect to members-only features: To get this for your project too you just have to follow some simple steps

Howto get the Facebook Login:

Go to and create a new application by clicking “Create New App”. Fill out any required fields such as the application name and description. Put your website domain in the Site Url field. Once you have registered, copy and past the created application credentials (App ID and Secret) into the HybridAuth config file.

Howto get the Google+ Login:

Go to and create a new project. Go to API Access under API Project. After that click on Create an OAuth 2.0 client ID to create a new application. A pop-up named “Create Client ID” will appear, fill out any required fields such as the application name and description. Click on Next. On the popup set Application type to Web application and switch to advanced settings by clicking on (more options). Provide this URL as the Callback URL for your application: Once you have registered, copy and past the created application credentials (Client ID and Secret) into the HybridAuth config file.

How to read login from a Remote Server

In case you have a remote server which booted in rescue mode and you need to obtain the login history of the original server you just can use the last command after mounting the disc which is carrying the OS from the original server.

last -f changes the default location of the last log to another directory

last -f /mnt/sda1_server/var/log/wtmp

Mysql: Allow Access from an IP Address

In order to enable access from a remote client to a mysql server just perform the following steps:

$ mysql -u root -p
Enter password:

mysql> use mysql

mysql> GRANT ALL ON *.* to root@’′ IDENTIFIED BY ‘root-pw';


use ” ‘ ” in all four cases above.

Afterwards the remote client should be allowed to communicate the MySQL server you updated the privileges. This receipt usually solves the ERROR:

“Host is not allowed to connect to this MySQL server”

Tipps and Tricks creating a SSL Certificate

In order to create a SSL Certificate one needs a CSR request for the server first. Under Linux it is very easy to create such an request:

openssl req -new -newkey rsa:2048 -nodes -keyout domain.key -out domain.csr

will do the job. Afterwards you have a csr file and a private key in the directory where you executed the command.

If your private key is protected by a password you can remove the password by:

> openssl rsa -in old.key -out new.key

During this process it is necessary to give the password once. The new key will not be protected by a password any more.