Author Archives: David Nieto

David Nieto
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Reading time 2 min.

For some time now, the new open source image format, WebP, has been on the rise. It aims to be the successor to the .jpg, .png and even .gif formats, as it allows image sequences to be stored.

This new format considerably reduces the weight of each image, thus speeding up loading times, so important in the user experience for mobile devices, in addition, like the PNG format, it can include an alpha channel for transparencies.

The WebP format is natively supported in the most popular web browsers such as Chrome, Firefox, Edge and Opera. Its main disadvantage is that it does not have support for the main image editing programs, so we will need plugins or external applications to create images and edit them in this format. But let’s take it one step at a time and learn a little more about this new format and its

The new WebP format allows a reduction in image size of up to 34% compared to JPEG and PNG formats.

Features of the WebP format

In the following image you can see a comparison between the quality of an image and its weight in the .png format we have been using so far and in WebP format with and without transparency channel.

formato webp

The WebP compression algorithm was created by Google in 2010 and is based on the VP8 video encoding format and RIFF as a container format. It supports both lossy and lossless compression.

This file format is based on block prediction. Each block is predicted through the top three blocks and one block on the left. There are four basic block prediction modes: horizontal, vertical, DC (for a single colour) and True Motion.

The developers point out that it allows a reduction in image size of up to 34% compared to JPEG and PNG formats, while maintaining their quality. The maximum pixel size of an image in this format is 16383 x 16383.

Create and edit images in WebP format

There are many tools on the internet that allow you to convert an image to this new format. With this app you can convert any image file to WebP in 3 easy steps. You can download it through this link.

But the problem is when we need to edit an image in WebP format and popular programs such as Photoshop do not allow us to do so, so we must make use of this plugin very easy to install.

Is it a good time to implement the WebP format on my website?

As mentioned above this format is well supported by current web browsers, but if your project needs to run in older web browsers, such as the tedious Windows Internet Explorer (now Edge) it would not be very advisable to use it.

There are several methods to find out if the browser where the web is displayed is compatible with the new Google image format, among them is the use of the Javascript plugin Modernizr, or the HTML tag that allows you to show alternative content with a priority order (In this website you can get more information and see how the tag works).


With this information about the new WebP format there are enough reasons to start using this format to the detriment of the popular .jpg and .png. Besides, being Google its creator, the use of this format will benefit the positioning in search engines.

If you want to know more about the WebP format you can visit its official site through this link.

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David Nieto
Modified at
Reading time 2 min.

The PDF file has transformed the way we share and download documents, as they are easier and lighter to handle when converted to this format, which helps us to exchange information in a simpler and more practical way.

Using a PDF file is so common that many people are already uncomfortable when they receive information in another format such as .doc, .xls or .ppt. They are also easier to manage and review on mobile devices.

PDF file – the printable format

Printing documents in colour: the PDF format is designed so that documents can be printed in colour or black and white, thanks to the representation of colour files that is included in the storage format.

The PDF format is the most commonly used format for sending files to the printer. The first thing to keep in mind when sending it is that the standard used in graphic arts is PDF/X. Sending the PDF according to this format will never go wrong.

A more secure archive

They have security options to protect the information (they are not easy to edit and alter, they can encrypt data, add watermarks, etc.) so they are commonly used by governments and financial institutions and also to reserve editing rights on information that is for our exclusive use.

In the following link we leave you a series of tips to get a secure password and make it difficult for hackers.

Add digital signatures

The digitisation of documents is a process that speeds up many procedures. Receiving invoices in the mail, as well as other official documents, has made a process that previously required going through the printer much easier.

This way, every time you receive a document that needs to be signed, you don’t need to print it out, sign it and scan it before sending it back. You simply include your signature in a digitised form and send it off, in a matter of seconds.

Offers digital interaction

PDF files offer search functions, bookmarks and annotations within its options bar, which significantly speeds up the handling of files with a large number of pages. It also allows us to add multimedia elements such as videos, links, buttons, transitions between pages and thus create a fully interactive document.

Create and send forms with PDF files

Acrobat automatically recognises static form fields and converts them into fillable text fields when you convert your scanned paper forms or digital files.

Move text fields. Change headers. Insert buttons. Add, delete and drag and drop form fields or enable fields for electronic signatures. You can even add calculations and data validation rules to your form with JavaScript.

You can easily email forms with fillable fields using a shared link, so you can see the status of responses and send reminders to people who haven’t responded.

Categories: Interesting articles Published at

David Nieto
Modified at
Reading time 3 min.

Every day we upload more and more personal information and data “to the cloud“. A wide variety of documents, such as PDF files, Word, Excel or images that, in many cases, is information with a high personal value, even critical, as it may be financial information.

Therefore, it is obvious that a good password is very important for the security of your data, and it is therefore advisable to pay attention to the correct creation and use of passwords.

In this article we provide you with some recommendations and tips for the choice and correct use of a secure password.

contraseña segura

The National Cyber Security Centre in the UK (NCSC) recommends creating a long password by combining three random words, which allows for something longer and more memorable than many standard options.

Rules for choosing a secure password.

The first golden rule for designing a strong password is basically: put a lot of characters.

We recommend you to put at least 12 characters, of which, you should take into account that they have:

  • A capital letter.
  • A number.
  • A special character or a punctuation mark.

REMEMBER: A complex password is more effective than a long password that repeats several letters.

To choose a good password we encourage you to follow these tips:

  • Do not use personal data as a password (birthday, cell phone number, etc.).
  • It should not have words with which you can be easily identified (e.g.: if you are a teacher, do not use profe123).
  • It should not be easily recognizable when you enter it.
  • You should change the password immediately if there is a possibility that someone knows it.
  • Use a strong password that is different from your email password, as this is often your route to access other accounts.
  • Create strong passwords with three random words; this will give you stronger passwords.
  • Save your passwords in your browser; this prevents you from forgetting or losing them.
  • Enable two-factor authentication: this adds an extra element of protection even if your password is compromised.
  • Store them in a protected place, such as a password management tool.
  • Don’t reuse passwords, don’t use the same one for different accounts or different applications. This way, in the event that one of your accounts is hacked, the others will still be protected.

Outdated rules for a secure password.

  • Avoid using short passwords that can be obtained through social engineering, such as your pet’s name, important dates for you or zip codes.
  • Forget that a password must have certain alphanumeric characters, one of which must be a capital letter and one of which must be a symbol. All these classic formulas are also known to hackers.
contraseña segura

Examples of dangerous passwords.

Here are some examples of passwords that could compromise the security of your data if you decide to use them, and which, surprisingly, are often used more than you think; if this is your case… change it!

  • Personal name.
  • Name of partner, parents, children, friends, etc.
  • Pet’s name.
  • Sequence of equal letters.
  • Telephone number or birthday.
  • Vehicle registration number.
  • PIN codes
  • Personal data (Example: astrological sign, hobbies etc.)
  • Keyboard sequences (Example: “qwertyui” or asdf1234)
  • Personal identity number (DNI, NIE, Passport, etc.).

Examples of secure passwords.

We have already shown you the negative counterpart, now we want to show you how to get a secure password to keep your data safe.

To create a secure password we can use 2 techniques:

  • 1. The passphrases.
  • 2. The string of random characters.


Passphrases are based on a combination of multiple common, unrelated words in a nonsensical order (there may be a phrase that has been chopped up and interchanged in a pattern known only to the user). An example of a passphrase might be, “casA?comER$dormIr€plaYa” (with the words house, eat, sleep and beach).

Random character string

These passwords include uppercase and lowercase letters, symbols and numbers in a spontaneous order, making them almost impossible to guess. To remember them, we can use muscle memory or mnemonics.

An example of a random string could be, “v5c:+Bp9cV+w” (which could be remembered using mnemonics, cow 5 house : + Barcelona beach 9 coffee VISA +wave).

Tips for the correct management of your passwords.

  • Each user, employee, service, etc. must have an individual password, in the case of managing a company and/or service; you should not give all your employees/users the same password, everyone must have their own.
  • It is highly recommended to change the passwords every 3 months or even before.
  • If at any time you notice any indication, or simply believe, that your password has been compromised, change it immediately.
  • You should change predefined passwords (e.g. the PIN code you are given when you buy a new cell phone, or acquire a new credit card).
  • You should avoid using a previously used password.
  • Do not save passwords in special quick programming keys or scripts.
  • Do not write down passwords in notebooks, etc.

We hope that all these tips and recommendations can be very useful to you and we encourage you to use them from now on, to improve the security of your passwords, and thus, keep your personal data safe.

Do not hesitate to visit our Offiwiz website and contact us with any questions or problems you may have, and of course, take a look at any of our articles or blog guides and tips.

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