Send and Lock PDF for free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
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Discover the simplicity of processing PDFs online

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025

Every PDF tool you need to get documents
done paper-free

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
easy to use convenient. Except unable to load it on my Surface pro 3. Help with this would be great. I have to access through the intranet only. No app
Anonymous Customer
2016-02-22
Its been a good experience so far. Although I have only used the service approximately 5 times it has been an efficient way to produce some general documents.
Charles
2016-12-22
The service is great and has come in handy in ways I had not expected. However, you lose 2 stars for my initial experience of first being asked to to pay, by a pop-up, to see a form that was submitted and then after paying being told by another pop-up that I need to upgrade to a more expensive plan. The first pop-up should have presented the correct plan. Felt a little like a bait and switch. But I gave you back one star due to the fact that support was able to fix the problem, quickly.
John R
2017-04-10
Great For PDF Easy access for my customer to fill out any paperwork. Enjoy using this software because I can type my invoices as word and then save them as PDF, and nobody can modify them. w As of now I really enjoy this software everything looks very neat when either im emailing any document or receiving.
Evelyn L.
2019-10-08
I am able to send out docs for signing and convert from Word to PDf, would love to learn more! Please contact me for classes- I want to understand the scope of opportunities that I am availed to. Plus a few specific items like sending a cover letter with the doc. Thanks so much!
Jill M
2021-03-28
Excellent App - Does All I Need It To Do Brilliant web based pdf application that does all that I want to do at a fraction of it's adobe equivalent.
Mr Phillip Addison
2020-08-27
I mislead them on my intentions for the service level that I required. Once I brought it to their attention, I answered 3 questions; and the matter was immediately resolved. Outstanding customer service comms. !!!
William J Clements
2020-08-27
I'm not very savy with technology, I wanted to upgrade my abilities and ease my work. I encounter PDFfilled easy to use the most imporatnt live help! I will keep learning. I'm very satisfied.
Sandra M
2020-08-11
This platform improves the efficiency… This platform improves the efficiency of my workflow as a small trucking company owner. I can quickly edit, sign, fill and forward documents. Caneymon Transport LLC gives 5 stars to PDfFiller.
Yolanda Johnson
2020-06-11

Use the best online editor to Send and Lock PDF easily

If you're tired with utilizing single-function platforms in which you are only able to complete just one manipulation, we know how you feel. Even though those are very popular features which most platforms support separately, very few of them offer the full compatibility to perform both together. Try using pdfFiller to get things done quicker and improve such processes.

Why pdfFiller? It's a certified, online PDF editing tool that actually works from the cloud. To be able to Send and Lock PDF, just open a browser, sign in, pick a form, and Send and Lock PDF immediately. The process of editing files in Portable Document Format is user-friendly, smooth actually. An advanced set of features allows you to do what you need and much more. Check out some helpful features available in our solution:

01
Fill out fields. Gather the data from customers the simple way, by letting them to enter it themselves
02
Layout management. Rotate, add, or delete new pages to make it work for your particular situation
03
design. Approve agreements and contracts right from your device
04
Watermarks. Protect your content by placing your logo or name on pages
05
Smart export. Send a document by fax or email, transfer it to the cloud storage, or simply download a sample in one of the available formats: PDF, DOCX, XLSX, PPTX, and JPG
06
Templates. Generate reusable forms and fill them out as many times as you want

Unlike some web platforms, our team takes the data security to the next level. pdfFiller operates the service in accordance with the US and EU data protection standards. We establish a secure connection when you log in to your account and keep information on servers in an encrypted form so that the chance of unwanted access to your profile and its data is almost impossible.

Value your time and get started with pdfFiller for a more streamlined approach to your document management.

Send and Lock PDF Feature

The Send and Lock PDF feature empowers you to secure and share your documents effortlessly. You can protect your sensitive information while ensuring that your shared files remain intact and unchangeable.

Key Features

Simple, user-friendly interface for seamless document sharing
Password protection to guard against unauthorized access
Ability to lock files to prevent editing or changes
Supports multiple file formats for versatile use
Quick document delivery options via email or file sharing links

Potential Use Cases and Benefits

Professionals sharing sensitive contracts or agreements
Organizations distributing secure reports or presentations
Individuals sending personal documents like tax forms or financial statements
Educational institutions sharing grading reports with stakeholders

This feature solves your problems of data security and document integrity. When you send a PDF, you want confidence that it will remain unchanged. With the Send and Lock PDF feature, you can share your files without worrying about unauthorized alterations or breaches. Protecting your information has never been easier.

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

For pdfFiller’s FAQs

Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
Encrypt the entire email. Encrypt the attachment. Password-protect the document.
Follow these easy steps to protect your PDF with a password: Click the Select a file button above, or drag and drop a PDF into the drop zone. Enter a password, then retype it to confirm the password. Click Set password. Sign in to download or share your protected PDF.
One-click option to protect a PDF with a password Choose File > Protect Using Password. Alternatively, you can choose Tools > Protect > Protect Using Password. Select if you want to set the password for Viewing or Editing the PDF. Type and retype your password.
Open the PDF and choose Tools > Protection > Encrypt > Encrypt with Password 6. If you receive a prompt, click Yes to change the security. Select Require A Password To Open The Document, then type the password in the corresponding field.

Video Review on How to Send and Lock PDF for free

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025