Add mandatory field to PDF in Linux easily

How to add mandatory field to PDF in Linux with DocHub

DocHub is an innovative platform designed to streamline document editing and signing, making it incredibly easy to manage your PDFs online for free. With seamless integration into Google Workspace, our editor allows users to import, export, modify, and sign documents directly from Google apps, ensuring efficient workflows. Whether you're using iOS 17, iOS 18, or iOS 19, DocHub provides the tools necessary to enhance your document management experience.

Follow the steps to add a mandatory field to your PDF:

Open the DocHub website and log in to your account. If you don't have an account, you can easily create one for free.
Once logged in, upload the PDF document you want to edit by dragging it into the designated area or using the file upload option.
After the PDF loads in the editor, locate the feature that allows you to add form fields. Select the type of field you wish to make mandatory.
Drag and drop the mandatory field onto the desired location on your document. Adjust the size and position to fit your layout.
In the settings for that field, ensure you toggle the option to make it mandatory. This ensures users cannot submit the form without filling out this field.
Once you’ve added all necessary fields and made them mandatory, review your document for any final adjustments.
Finally, download or export the completed document, or share it directly via email or a link. You can also print it if needed.

Start using DocHub today to simplify your document management and elevate your productivity!

PDF editing simplified with DocHub

Seamless PDF editing

Editing a PDF is as simple as working in a Word document. You can add text, drawings, highlights, and redact or annotate your document without affecting its quality. No rasterized text or removed fields. Use an online PDF editor to get your perfect document in minutes.

Smooth teamwork

Collaborate on documents with your team using a desktop or mobile device. Let others view, edit, comment on, and sign your documents online. You can also make your form public and share its URL anywhere.

Automatic saving

Every change you make in a document is automatically saved to the cloud and synchronized across all devices in real-time. No need to send new versions of a document or worry about losing information.

Google integrations

DocHub integrates with Google Workspace so you can import, edit, and sign your documents directly from your Gmail, Google Drive, and Dropbox. When finished, export documents to Google Drive or import your Google Address Book and share the document with your contacts.

Powerful PDF tools on your mobile device

Keep your work flowing even when you're away from your computer. DocHub works on mobile just as easily as it does on desktop. Edit, annotate, and sign documents from the convenience of your smartphone or tablet. No need to install the app.

Secure document sharing and storage

Instantly share, email, and fax documents in a secure and compliant way. Set a password, place your documents in encrypted folders, and enable recipient authentication to control who accesses your documents. When completed, keep your documents secure in the cloud.

Drive efficiency with the DocHub add-on for Google Workspace

Access documents and edit, sign, and share them straight from your favorite Google Apps.

Install now

How to add mandatory field to PDF in Linux

4.9 out of 5

72 votes

Cheryl from Maid on Sunday studio discusses branding, design, and creative entrepreneurship on her YouTube channel. In this video, she focuses on creating digitally fillable PDF forms that can be shared with an online audience. These interactive documents allow users to input text, check boxes, and drop-down menus, and save or send the completed form back. Cheryl has previously made videos on designing these forms on Canva and using PDF Escape for interactivity. This video serves as an update on creating fillable PDF forms in 2023.

Related features

Vary contents in text

Vary contents in gif

Vary contents in tiff

Vary contents in ppt

Vary contents in powerpoint

Got questions?

Here are some common questions from our customers that may provide you with the answer you're looking for. If you can't find an answer to your question, please don't hesitate to reach out to us.

Contact us

How do I insert a digital signature into a PDF?

See how to sign a PDF Open the PDF document and then from the All tools menu, select Fill Sign. Create your signature and initials if not already done. From the Sign panel, select your signature, move over to the field where you want to add it, and then click to place the signature.

How do I add a signature to a PDF in Ubuntu?

How to Sign a PDF File in Ubuntu xournal. ```$ sudo apt xournal``` Start xournal. ```$ xournal``` Open PDF file using it. Sign with paper and pen, scan it using your smart phone. Crop and save your sign as an image file. Insert this sign-image as an image using xournal.

How to make a PDF fillable in Linux?

How to Create Fillable PDF Forms on Linux with ONLYOFFICE Step 1: Get ONLYOFFICE Desktop Editors. Step 2: Create a Form Template in ONLYOFFICE. Step 3: Add the Form Fields and Adjust Properties. Step 4: Preview the Form. Step 4: Save the Form as a PDF.

How do I add a signature to a PDF in Linux?

Select Annotate PDF from the File menu and select your PDF file to be signed. Click the Image button in the toolbar (it looks like a silhouette of a person) or press Shift+Ctrl+I (that is I for Image). Click on document, and a file browser dialog will open. Select the image of your signature.

How do I fill in a PDF in Linux?

Method 1: Filling In PDF Forms on Linux With LibreOffice Step 1 Open the PDF file in LibreOffice. Step 2 To insert a text box, go to the Insert menu and select Text Box. Position the text box where you want it, resize it, and adjust the font size as needed.

How to validate digital signature in PDF Linux?

Checking Digital In Linux: Step 1: Open a terminal. Step 2: Use the gpg command to check the signature. The gpg command is usually pre-installed in most Linux distributions. If you dont have it, it using the package manager specific to your distribution.

See why our customers choose DocHub

Great solution for PDF docs with very little pre-knowledge required.

"Simplicity, familiarity with the menu and user-friendly. It's easy to navigate, make changes and edit whatever you may need. Because it's used alongside Google, the document is always saved, so you don't have to worry about it."

Pam Driscoll F
Teacher

A Valuable Document Signer for Small Businesses.

"I love that DocHub is incredibly affordable and customizable. It truly does everything I need it to do, without a large price tag like some of its more well known competitors. I am able to send secure documents directly to me clients emails and via in real time when they are viewing and making alterations to a document."

Jiovany A
Small-Business

I can create refillable copies for the templates that I select and then I can publish those.

"I like to work and organize my work in the appropriate way to meet and even exceed the demands that are made daily in the office, so I enjoy working with PDF files, I think they are more professional and versatile, they allow..."