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Locked PDFs: Why Do They Have Passwords?



Locked PDFs: Why Do They Have Passwords?

As far as most of us know, the portable document format, short for PDF, allows preservation of formatting, ease of sharing, and many other features. That’s why people opt to convert or render their files to PDF, especially before sharing or archiving them. However, they are skeptical about whether their work will get leaked once they share their documents. 

One solution that many people found is to set a password for the PDFs. Like how you cannot connect to Wi-Fi without knowing the key, the same goes for locked PDFs. It provides a layer of protection against unauthorized access.  Let’s discuss more information about PDF passwords – their types, what they can do, and how you can remove them with PDF unlock tools!

What are PDF passwords?

As we’ve said earlier, PDF passwords essentially provide a “locked door” where you need to insert an appropriate “key.” You can password protect your files using third-party software that you can find online. If you do this, other people who don’t have the key cannot open the PDF you encrypted with a password. Remember to select whom you’ll share your password with carefully!

Types of PDF passwords

For instance, you locked your phone with PIN-type security. But, most likely, you had other password-type options like biometrics, passphrase, and many more. The same holds true for PDF passwords as well. Though the types are not as numerous as that of a smartphone, you certainly have options for PDF encryption types.

The two types are owner-passwords and user-passwords. User-password, as the word user implies, is the type that allows the authorized person to view and access the file. Meanwhile, owner-passwords provide more control regarding what other people can do with your PDF. For example, as the owner, you can restrict editing, copying, printing, and many more possible actions.

Are PDF passwords really secure?

Certainly, yes. As long as unauthorized people don’t know the password, literally almost no one can open the said file. That’s why it’s no wonder people opt to password-protect their PDFs. It’s best to set up a preventive measure if ever. But, of course, you also need to be careful in sharing the passkey. After all, people are the ones who move and leak the information, and not the file itself. 

Have you experienced having locked PDFs?

If you’ve got locked PDFs, it’s relatively easy to open them as long as you know the key. It can be tricky, though, if you forget it. Most web browsers are equipped to open portable document format files – some computers set them as default. So, all you need to do is click your file, open them in your browser, enter the password, and view the content!

Removing PDF passwords

Though it’s pretty easy to type the password when prompted while opening the file, it can be pretty annoying to do it over and over again. It can also interfere with your work, in case you need to make changes to the file. Luckily, you can remove your PDF passwords just like how you can encrypt them!

Oops! First, you have to know that you don’t need to download any software application to do this. Many people hate having to go through many complicated processes. Don’t worry! As technology constantly advances, removing passwords from PDFs is made easy. You just got to go online, open your browser and search for a PDF unlocker.

Popular choice: PDFBear’s Unlock PDF Tool

Talking about tools you can use to remove PDF passwords, PDFBear is undoubtedly one of the best out there. A few reasons are that PDFBear assures its users of their guaranteed privacy and accessibility. But, more importantly, it’s a quick and secure web-based service that removes your PDF’s password on the cloud. 

One reason why you searched for a PDF unlocker is probably that you’re clueless on how to handle it properly. It’s absolutely fine, as not all people are indeed tech-savvy. The most likely thing you would do is to look it up on Google. Here on PDFBear, the steps to remove your PDFs’ passwords are made simple. Follow the guide below, and you’re done!

  1. Go to PDFBear.
  2. Select your file from your storage and upload it.
  3. Input the password once the website prompts you.
  4. Click Unlock PDF.
  5. Wait for PDFBear to finish removing your password.
  6. Download it, and you now have your decrypted PDF copy!

Final Say

We venture online frequently, especially now that sharing files through online storage, emails, and sharing apps are the norm. As a result, security is always a significant concern of many. It’s evident, given how people set password encryption for their PDF files. So it won’t be a surprise if you, yourself, encrypt your PDFs. 

You can easily open locked files through your browser – just type in the password when you receive the prompt. But, if you want to permanently remove the password to make it more accessible for you, just go to PDFBear and unlock your PDF!

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Marking technologies based on lasers



Marking technologies based on lasers

Laser annealing

The process of anodizing involves creating an oxide layer on ferrous metals (iron, steel, high-grade steel) and titanium through localized heating.

Generally, the oxide layer is black; however it may additionally produce other annealing colors (inclusive of yellow, pink and green). The satiation relies upon at the temperature of the heated layers.

The fabric floor stays even at some point of annealing due to the fact not anything is eliminated from it; the satiation alternate is accomplished via localized fabric heating only.

The warmth normally penetrates 20 to 30 µm deep with inside the metallic floor. This makes the marking non-abrasive and guarantees that it may be eliminated with the aid of using re-heating (min 700°C for ferrous metals).

 Suitable laser systems:

CO2 laser marker

Fiber laser marker

Black marking on aluminum

Color Change/Frothing

Plastics soak up Lasermarkierung mild. The satiation pigments (from additives, colors etc.) and carbon in plastics are destroyed and vaporize due to localized heating. A satiation alternate will become seen and the frothing of the fabric may be felt.

The carbon with inside the plastic oxidizes to shape CO2, which comes out of the plastic and bureaucracy a layer of froth.

The discoloration is both lighter and darker relying at the composition. Dark plastics discolor to white on the locations to be marked, whilst mild plastics discolor to grey or black (see carbonization).

Discoloration and frothing seem solely in case of plastics.

Suitable laser systems:

Fiber laser marker

UV laser marker

Color Removal / Material Removal

Marking with the aid of using disposing of satiation and fabric is used specially in lined substances and anodized aluminum in addition to in fittings, packaging substances and labels. The present satiation, coating and floor layers are partly eliminated and the bottom fabric will become seen.

The layers to be eliminated soak up the laser mild; the fabric heats up and vaporize at applicable locations. Since the floor layer and sticking out base fabric have distinctive colors or the bottom fabric is frequently additionally back-lit, the marking will become clean and seen.

Since the very last markings are very wealthy in contrast, this laser marking system is in particular used with inside the car enterprise for the day/night time design, with inside the marking of the maximum numerous manage factors and keyboards in addition to with inside the packaging enterprise.

Suitable laser systems:

Fiber laser marker

Laser marker for Day-Night-Design (satiation removal)

CO2 laser marker


In case of carbonization the use of laser, the laser marked fabric usually receives a darker satiation.

Plastic bonds are damaged and the carbon from those bonds is released. The discoloration therefore produced levels among grey to blue-grey and black.

Carbonization is used for mild plastics and natural substances (paper, packaging substances, wood, and leather), wherein the satiation adjustments from mild to dark. Click here

Suitable laser systems:

CO2 laser marker

Fiber laser marker

UV laser marker


In case of engraving the use of laser marking, fabric is taken out or eliminated from the floor of the issue to be processed. This marking impact may be created in nearly all substances.

Especially metals, plastics and ceramics are engraved the use of laser markers. The laser beam penetrates into the floor and gets rid of it, in order that there may be a seen despair of as much as 50 µm in that area.

Since the fabric receives concurrently heated and reacts with the ambient air, there is mostly a discoloration on the engraving areas, which stand out extra surprisingly because of the laser marking.

Suitable laser systems:

Fiber laser marker

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How Do I Determine What Cloud Storage Is?



How Do I Determine What Cloud Storage Is

Businesses are increasingly moving their important business data to the cloud for various reasons. Many businesses are realizing that they need a modern approach to data security, and are moving away from traditional on-site data storage solutions. In addition, customers have been demanding it and many businesses are moving to provide it. However, how do you move your data to the cloud, and what is the pricing model? This article will help you understand the cloud storage pricing model so you can make an informed decision about moving your data.

Characteristics of Cloud Storage:

There are three primary characteristics of cloud storage that you should be aware of. 

  1. First, cloud storage uses highly efficient hardware. 
  2. Second, it uses highly accessible resources such as cloud servers and network adapters. 
  3. Third, it utilizes an extensive control management system and can be operated on a self-managed, virtualized infrastructure. 

The key features of cloud storage are high availability, redundancy, metered resource usage, and pay-as-you-go plans.

The Benefits of Cloud Storage Are Clear: 

You can store more data, take less maintenance overhead, and access your data from anywhere, anytime. What is less clear is how do you make sense of all this data. If you store all your data in a traditional on-site data center, you will incur costs associated with power, air conditioning, heating, and cooling. 

If you choose to use public cloud storage, you will incur costs associated with the hardware, software, and service contracts for the service. If you use a service such as Google Docs, you will have data stored in one location and the ability to access and edit from any computer with an Internet connection.

Pricing Model:

One of the challenges of cloud storage is the pricing model. Although there are a variety of models, they all work on the same premise of providing backup, restoring, and storing your data. Cloud-based pricing includes two major components, infrastructure, and service. 

The pricing includes the cost of the hardware, software, and service contracts, and any maintenance fees associated with the operation of the cloud service. The pricing also includes the actual cost of backing up data to a third-party provider, which can include a monthly fee or per use fee.

Features to Consider:

There are several features that you may need to consider when considering cloud storage. First, if you need an application that stores information permanently, you may need to purchase disk drives of higher capacity. 

If you only need your information to be available for a short period, you may need to use the free online storage provided by the cloud service. Another important feature that you may need to look into is how much disk space is available because this is an area where you will pay additional costs.

In the past, cloud services were considered to be part of IT infrastructure management systems, which means that they are primarily meant for large companies. However, due to the rapid expansion of cloud services that also include smaller companies, many small businesses now use cloud storage services to save money. Many people also consider cloud services as an alternative to traditional computing. However, you need to ensure that you get the right cloud storage system for your needs.

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What are the Different Types of Electric Bikes?



Electric Bikes

Electric bikes seem to be very quickly replacing the car for short-distance commuters. Research suggests that around 35-50% of all trips made on an electric bike would have been made by car had the electric bike not been around.

If you’re considering a greener way of getting around, then you’ll probably want to know more about the different types of electric bikes available. Well, we’ve got you covered. Keep reading to learn more. 

The 3 Types of Electric Bikes

Before buying an electric bike you need to be aware of the different types. Of course, there are different electric bike brands and different models which you can find out more about here, but they all span off from the 3 core differences between electric bikes.

Type 1 Electric Bike: Pedal Assist

A pedal-assist electric bike needs the rider to pedal to take advantage of the motor. When you start to pedal the motor kicks in to help double your efforts. Some pedal-assist electric bikes come with a throttle. There’s no age limit on using this type of electric bike, nor do you need a driver’s license. 

Type 2 Electric Bike: Throttle Only

On a throttle-only electric bike, you don’t need to pedal to take advantage of the motor. You simply apply throttle like you would on a motorbike, and the motor kicks in. It means you can accelerate out of corners to increase your traction.

The less you pedal, the quicker you drain the bike’s battery. As with the pedal-assist bike, you don’t need a driver’s license, and there’s no age limit on using a throttle-only electric bike.

Type 3 Electric Bike: Pedal Assist 28mph

The pedal assists 28mph electric bike exists for all you speed freaks out there. It’s the fastest legal electric bike available, and outperforms the other types of electric bikes by 8mph. The speed of this bike makes it a great choice for regular commuters. 

This type of electric bike is only available to people 17 years and older, but the same rules apply. No need for a driver’s license, because it’s still technically a bicycle!

Different Motors for Different Rides

Choosing which motor is best for you is simple. You only have two main choices:

  • Mid Drive Motors
  • Rear Hub Drive Motors

The mid-drive motor is the most expensive option, but it’s also the most energy-efficient. They deal with all applications well and provide a great center of gravity, meaning it feels a lot like riding a normal bike. The energy from the motor is transmitted to the drive chain, as supposed to one of the wheels.

The rear hub drive motor is situated at the back of the bike and powers the back wheel so it feels like it’s pushing you. The rear hub drive motor option is more affordable and still a great choice, but it is less energy efficient.

Other Electric Bike Options

When it comes to choosing between different types of electric bikes, the most important thing is that you know what you’re going to be using your bike for. There are electric bikes specifically built for mountain biking, road biking, and general commuter bikes. Whatever your biking needs, there will be an electric bike perfect for you. 

For more technology and lifestyle articles, be sure to check out the rest of our blog. 

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