Otherwise, it acts as a smart super-fast PDF reader for you to view your documents. You can also download the Smallpdf Desktop App and encrypt as many PDFs as you’d like, or unlock and open PDF documents in a batches, entirely offline. While you’re taking advantage of the trial, all usage restrictions are removed. If you work extensively with digital documents and need unlimited access, we offer a 7-day free trial to Smallpdf Pro. The tool to encrypt your PDFs is free to use, a limited number of times per day. The more substantial the password, the higher the chances that no one can gain unauthorized access to it. Also, throw in a mix of numeric characters, capitalization, and even special symbols. If you’re wondering what’s a robust enough password to use to encrypt your PDFs-you should aim to use a unique word with at least seven characters. So, if you chose your birthday, that’s on you. There’s one more important thing we’d like to tackle: Even the strongest encryption can’t help you if people can guess your password in a minute. As paper has the tendency to get lost/destroyed/thrown out, we’d recommend you use a password manager such as LastPass or Dashlane to store the file’s password. That’s why we want to stress how important it is to make sure that you always note down the password of the file. Our password protection is so strongly encrypted that you’d need to know the exact password to uncover its convent. If you’ve forgotten your password, we’re sorry, but there’s nothing we can do. Maybe it’s time you shared that manuscript with the world? Afterwards, you’re free to either set a new password or just download the now decrypted file. Unless, of course, you have the original PDF password, then you can use our online Unlock PDF tool to remove the encryption from the PDF. Similarly, it doesn’t matter if you’re on Windows, Linux, or Mac-as long as you have an internet connection, you can encrypt your PDFs for free. You can find out more about this on our Privacy page.Īs Smallpdf is an online platform, you can access the tools via your favorite internet browser (Firefox, Edge, Safari, Chrome, etc.). AI PDF Summarizer lets you understand document contents. We use TLS encryption for all online file transfers our servers also remove your file after one hour. With AI PDF, you can utilize the powers of artificial intelligence to summarize PDFs of up to 50 MB and 50,000 words for free The interactive chat function lets you request specific information to be summarized and presented to you in a matter of seconds. More than secure-it’s the most reliable online tool to encrypt your digital documents.