Última actualização em
May 25, 2026
Add Markups In a PDF Document Online on Linux For Free
Drop document here to upload
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
0
Forms filled
0
Forms signed
0
Forms sent
Try these PDF tools
Edit PDF
Quickly edit and annotate PDFs online.
Start now
Sign
eSign documents from anywhere.
Start now
Request signatures
Send a document for eSignature.
Start now
Share
Instantly send PDFs for review and editing.
Start now
Merge
Combine multiple PDFs into one.
Start now
Rearrange
Rearrange pages in a PDF document.
Start now
Compress
Compress PDFs to reduce their size.
Start now
Convert
Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.
Start now
Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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:
What do you like best?
Extremely simple way to fill out, edit, and merge PDF documents.
What do you dislike?
Document uploading is slightly slow when working with larger files.
Recommendations to others considering the product:
User frindly/cost effective.
What problems are you solving with the product? What benefits have you realized?
Editing, merging, and sharing PDF files.
Extremely simple way to fill out, edit, and merge PDF documents.
What do you dislike?
Document uploading is slightly slow when working with larger files.
Recommendations to others considering the product:
User frindly/cost effective.
What problems are you solving with the product? What benefits have you realized?
Editing, merging, and sharing PDF files.
2018-01-15
Very Easy to use and meet the needs that I had for documents
able to make changes on a PDF and electronic sign them as well. Thank you for that ease of use.
Ease of use I have a lot of documents in PDF format and they need to be completed by myself before sending for signatures and this helps me make that possible.
Printing completed documents, I have to save them first and then find the ones that I have just amended to print
2017-10-10
Really intuitive and easy to use…
Really intuitive and easy to use interface. I'm not the best with computers but I was able to workout what I needed to do fairly easily just by playing around with the site.
2023-10-02
Could make it a little easier to sign…
Could make it a little easier to sign and save documents to your desktop, especially when you need to send signed documdents via email.
2022-02-19
Ryan on the Support Team was extremely helpful and patient. He walked me through all of the steps to complete the form to my satisfaction. Thank you Ryan for teaching me!
2020-05-21
I'm a college professor that has to use this pdf editor for both class content and administrative content.
It's fine. Not as good as adobe but it is cheaper.
2025-06-27
How to Add Markups In a PDF Document Online on Linux
Learn to manage PDFs in clicks on Ubuntu.
01
Go to the pdfFiller website and sign up for a free account.
02
From your Dashboard, click the Add New button and upload a doc that you need to Add Markups In a PDF Document Online on Linux.
03
Alternatively, place your cursor on the button for adding new documents and select another import option.
04
In the opened document, use the top toolbar’s tools to insert, replace, or highlight/blackout text and place new shapes.
05
Rearrange, insert new, or delete old pages if required.
06
Insert interactive fields with different validation types.
07
Check your document once more to make sure it looks like you want it.
08
Click Done to finish the editing process and return to the Dashboard.
09
Combine files in the Documents folder.
10
Export the file in several ways. Your options can be found at the top-right of your screen.
Add Markups In a PDF Document Online on Linux
Enhance your PDF editing experience with the ability to add markups directly online. This feature allows you to easily annotate and clarify your documents on a Linux platform, making collaboration smoother and more effective.
Key Features
User-friendly interface for seamless navigation
Supports various markup tools including highlights, comments, and shapes
No software installation required; access directly from your browser
Compatible with all major Linux distributions
Secure cloud storage for your documents
Potential Use Cases and Benefits
Professionals can give constructive feedback on reports and proposals
Students can annotate academic papers for better understanding
Teams can collaborate by marking up project documents in real time
Legal professionals can highlight important clauses in contracts
Educators can provide notes and insights directly on curriculum materials
This feature addresses the common problem of ineffective communication in document reviews. By using straightforward markups, you can convey your ideas clearly and ensure that all team members understand your points. Make the most of your PDF documents by adding precise notes and highlights, leading to better discussions and improved outcomes.
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
How do I add comments to a PDF document?
Choose Tools > Text Tool.
Choose Notes > Text Note.
Drag in the document until the note is located where you want and has the size you want.
To enter text, double-click the note.
How do I add metadata to a PDF document?
Choose File > Properties. Click the Description tab, and type the author's name, subject, and keywords. (Optional) Click Additional Metadata to add other descriptive information, such as copyright information.
How do you permanently edit a PDF?
The Pages → Rotate View method accessed from the Pages tab or Shift + Ctrl + R keystroke is used for permanent changes to the document and will be saved as part of the document settings, assuming you save your changes using File → Save (Ctrl + S) command.
#1 usability according to G2
Try the PDF solution that respects your time.