| File extension | |
| Internet media type | application/pdf |
| Description: | The Portable Document Format (PDF) is a vector-based file format introduced by Adobe Systems in 1993. It was primarily designed for opening and editing documents on various desktop and mobile devices regardless of the operating system installed. PDFs can contain both text and images. Every page of a PDF file has a fixed layout and retains its structure when shared, printed, or downloaded to another device. |
| Technical Details: | A PDF is a 7-bit ASCII file. It is based on the PostScript language and contains the description of a flat document with a fixed layout and all the embedded elements, such as graphic objects and fonts (in case the file includes text sections). PDF documents may also contain fillable fields, as well as interactive elements, i.e. hyperlinks, bookmarks, buttons, etc. |
| Developed by | ISO |
| Initial Release: | 15 June 1993 |
| Useful links: | https://acrobat.adobe.com/us/en/acrobat/about-adobe-pdf.html https://fileinfo.com/extension/pdf |
As a result of the multitude of competitors on the web, choosing an ideal software can be challenging — especially if you don’t accurately compare it with the alternatives. Our comparative table will help you easily pinpoint your favorite solution to Protect PDF documents. Get to know the forward features of AltoProtect.
| Smallpdf | Adobe | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| No Software Downloads | ✔ | ✔ | ❌ | ||||||||||||||||||||||||
| Cloud storage | Unlimited | No info | No info | ||||||||||||||||||||||||
| Price | Free | Free 7-Day Trial for Smallpdf/ paid | Free 7-Day Trial for Adobe Acrobat/ paid | ||||||||||||||||||||||||
| Encryption and Security | ✔ | ✔ | ✔ | ||||||||||||||||||||||||
| Support | 24/7/365 | No info | ✔ | ||||||||||||||||||||||||
| No ads | ✔ | ✔ | ✔ | ||||||||||||||||||||||||
Online document protection is one of the easiest ways to add an authentication layer to your document. This operation is easily completed with Alto PDF service. Available from any internet-connected device this solution works perfectly no matter you are using a tablet, smartphone or computer. It makes protection fast, simple and safe, not only through the usage of the latest security methods but thanks to the location of the platform in the cloud. It also not requires registration and all operations are made anonymously.
Samples processing with AltoPDF is easy and fast, thanks to the following step-by-step instruction:
The usage of the online-based solution guarantees saving time and internal device’s memory. It is the perfect solution both for those who work with the documents rarely and regularly. In particular, it has no limitation of files per day or hour. Even working with documents regularly is time-saving.
Having a locked document you can easily share it with any person by any communication channel, not being afraid of data loss or information fraud.
Being widely known and loved by the majority of internet-user Chrome becomes not only a useful browser but also a powerful platform for additional tools. Its ability to integrate into different mobile and desktop versions and integrate all search results from different devices of any user makes this application universal. It supports several extensions, that help to personalize the design of the browser and its toolkit, according to user’s needs. Adding document protection features is also available in Chrome. One of the safest and most trustworthy services is the Alto Password PDF extension for Chrome.
To add the protection to your PDF with Alto extension follow these steps:
The service is easily installed and completes the locking process in a half of a minute. It is very simple in use having the self-explanatory interface. After you integrate this extension in your browser you get a perfect tool for unlimited protecting numerous files. It is secure, has no registration or payments and is always available from your browser. The service saves time you could spend on the search and installation of the software or selecting a secure online-baed solution.
Unlike Mac, there is no password protecting feature in Windows by default. It brings the problem that can be solved by usage online service, Google extension or the software. Most windows users process their files with MC Office Pack or Microsoft Word in particular. this solution has lock function, but it is a special one. First of all, you should know that Any PDF opened in Word automatically turns into.doc file. To get locked sample one should not just protect file but also use the Save as option.
To protect document on Windows with Word use the following tips:
Locking file on Windows with Word is easy if it is already installed on your desktop or laptop device. It is necessary to install MS Word or full MS Office pack to your device if you do not have it yet. Go to their official website and download the installation file from it. Next, you will need to open and install the service to your computer.
Also, it is possible to use an online-based solution if do not have time on the installation of the software.
Mac is one of the systems that has, among its basic programs much more pre-installed features than other systems. They are simplifying the life of their users, having the set of basic solutions for documents viewing, creation, editing, management, locking and unlocking. In particular, PDF files are easily opened in Preview and can be created, as well as edited with Pages. The protection option is available on Pages. The process takes a minute and encrypts the template from everyone who tries to open it.
To lock your sample with a password using Mac, follow simple instructions, given below:
Processing docs via pre-installed solution gas numerous benefits. In particular, it saves time and funds. On the other hand, there is no necessity in the installation of specialized programs or searching for trustworthy online service. All pre-installed features pack, as well as protection, goes together with Mac OS in a full version for free. It is important to be aware of all features those solutions contain to know how many default document management tools you have on your computer.
Adobe Reader is widely known worldwide, as this is the company that founded PDF and for a long time it was the only solution, able to make operations with this file type. Adobe Acrobat has a multi-functional toolkit available from any device. It is the software that can is available in mobile and desktop versions. It can preview PDFs, edit their components, manage pages, save them in any needed format, except for PDF. Also, it unlocks and locks files with a password.
Adding protection to the document with Adobe Acrobat is Possible by following those instructions:
Acrobat is available in trial and paid versions. Most features are available in the free version, but they are limited if there is no subscription payment after seven days. If there is no subscription, the amount of tools, available in the trial version is decreased. The registration is also obligatory. It helps to synchronize documents of every subscribed user, to be available from any device and makes Adobe Document Cloud available. It works offline but some options are synchronized after the device connects to wireless or wired internet.
Go to altoprotectpdf.com to create safe and reliable protection for your document. AltoProtectPDF is an online service that enables you to lock the file and have personal or common access. For that, select a file, create a password and save it to your computer.
You can send out documents to be signed
Only users who have the password can open a locked document. So it’s absolutely safe to share your docs via email. With the help of the online editing tools, you can not just format the document - but also send it for signing. Collect signatures of up to twenty people and get an email notification when the document is signed.
