Gateway Solutions- Networking, Hardware & Security : 07/12/25

Saturday, 12 July 2025

How to edit a PDF file online

If you need to edit a finished PDF file, for example, you need to rotate, add or delete a page, you can use the service PDFChef. To use it you need:

Go to

Click "Add files" and select the desired file

Select a sheet and rotate/delete/move it With the button "Add files" you can add another document to add the desired page or the whole document. After all manipulations press "Save and download".

3 tricks to make it easier to find information on Google.

There are dozens of combinations and tricks to google more effectively. But these 3 are some of the most important. And they're easy to remember:

To exclude a word from search results, put a "-" in front of it. For example, "-black cats." So Google will exclude all black felines from the results.

If you can't find a specific word for a query, just add an "*" sign instead. For example, for the query "best * on programming" Google will give you links to books, courses, movies and articles on programming.

To find a file type (jpg, pdf, txt), type "filetype:" in the search box and after a colon, type the file type and keywords. This is usually how you search for books. For example, the query "filetype:pdf The Old Man and the Sea" will instantly find the iconic novel in .pdf forma

Protecting ourselves from unwanted actions

Protecting ourselves from unwanted actions There is a type of fraud called ClickJacking. This is when you click on an ordinary link and end up on a malicious site. Most often you will find yourself on a skam site, or up to your ears in ads. To protect yourself from this, you can use the browser extensions NoClickJack for Chrome and NoScript for Firefox. These extensions automatically show you where you will be redirected. Usually, to redirect you to your resource cheaters intercept the html element iframe, it is invisible to the eye, so it is visible only in the source code of the page.

How do I use multiple accounts at once?

Not all services support working with different accounts at the same time. In such cases SessionBox comes to your aid, which allows you to use several accounts without any problems. The essence of the extension is to create separate independent profiles within one tab. You open a page, give it a name, then it's marked with a dot of a certain color. Then you can open a second tab with a different profile and log in to the same site. And both tabs are isolated from each other and will not interfere with simultaneous work.

How do I set a pin code on my SIM card?

If your phone is stolen, the password is useless, because the SIM card can be taken out, inserted in another phone and without problems access to bank accounts and other accounts. Therefore: 1. Open the Settings app. 2. Go to the "Security and Privacy" section. 3. open "Advanced Settings" - "Encryption and accounts". 4. click on "Set lock" and select which SIM card you want to set a pin code for. 5. Enter the default password. Usually it is simple, like 0000 or 1234, but better check with your operator. 6. 6. To change it, press "Change SIM card PIN", then enter the old password and the new one twice.

Hiding a number in iPhone

Few people know, but the iPhone supports the function of hiding the number without installing additional programs. To enable number hiding you need to go to "Settings", and go to "Phone". There you will find the function "Show number". After turning off this item you can call without displaying your phone number to the interlocutor. It is worth noting that some operators have a paid feature "Caller ID". If it is connected at interlocutor, then your number will be displayed, but there is a solution for this situation, and it is a paid function of the operator "Anti Caller ID". With this function, you can call a person whose number you are in the black list, but for the operator, as well as for the police to determine your number is not difficult, so we can conclude that the anonymity of this function is given only in relation to the interlocutor.

Enable the option to take screenshots in Chrome

If someone ignores the built-in Windows screenshot creation tools for some reason, we can use the experimental features to create screenshots in Chrome browser. To do so, go to the internal address chrome://flags/#sharing-desktop-screenshots. The Desktop Screenshots option will be highlighted in yellow. From the drop-down list on the right, select Enabled and relaunch the browser with the Relaunch button. Now, if you click the Share button in the address bar, the Screenshot option will be available. Select the desired area to create a screenshot. It will be placed on the clipboard, and in the window that opens, you can click Download to save the image immediately.