MobiPDF

MobiPDF

MobiSystems
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About

MobiPDF (formerly PDF Extra) is an intuitive and powerful PDF editor and reader designed for today’s modern user - the cost-efficient alternative to Adobe Acrobat Pro you’ve been looking for. FEATURES OVERVIEW: PDF Viewer and Reader: Switch between page views or use "Read Mode" for distraction-free reading. Create and Edit PDFs: Modify text and images or start with a blank PDF. Convert to Office Formats: Easily turn PDFs into Word, Excel, PowerPoint, and image files. Leverage OCR: Transform scanned documents into searchable PDFs. Organize PDFs: Combine, split, reorder, and compress documents. Markup and Comment: Highlight, annotate, and add bookmarks or stamps. Fill PDFs: Seamlessly fill forms or create ones from scratch. Sign PDFs: Sign your documents anywhere—no ink required! Secure Your Work: Protect files with passwords, digital signatures, and 256-bit encryption. Offline Mode: Full functionality without internet access. Translate PDFs

About

Primepdf is a comprehensive, browser-based document productivity platform that enables individuals and businesses to edit, convert, create, sign, and manage PDF files and other document formats — all without downloading or installing any software. Designed for speed, simplicity, and accessibility, Primepdf works seamlessly across desktop, tablet, and mobile devices, automatically syncing your work so you can start a task on one device and finish it on another.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Anyone who needs reliable PDF editing, SMBs

Audience

Everyday consumers, small business owners, freelancers, legal professionals, remote teams, students, and privacy-conscious individuals seeking a fast, browser-based PDF solution to edit, convert, sign, and manage documents online — without downloading software — through intuitive editing tools, guided document creation, multi-format file conversion, electronic signatures, and secure cloud-based file storage.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$49.99
Free Version
Free Trial

Pricing

$1.00
Free Version
Free Trial

Reviews/Ratings

Overall 4.8 / 5
ease 4.8 / 5
features 4.6 / 5
design 4.9 / 5
support 4.8 / 5

Reviews/Ratings

Overall 4.8 / 5
ease 4.1 / 5
features 4.2 / 5
design 4.4 / 5
support 4.4 / 5

Pros from Real Users

Pros

  • Finding a decent PDF converter is hard as there are so many scammers out there. I have been able to amend, edit and process all the required PDF documents I needed using PDF extra without any issues or restrictions. It is truly an amazing resource and very user friendly. I can highly recommend this to anyone searching for a valuable resource to work with.
  • Easy to use and able to manage my documents good enough from the work that I needed for, with simple edits.
  • I like that I can use PDF Extra at work. It really helps to fill and edit documents with ease. The navigation is user friendly.
  • The ability to edit PDF’s on the fly from my phone. Then accessing the file remotely from online storage. There were some hiccups in the beginning, but I like using PDF Extra.
  • All of it, easy to use, quick to set-up and more functions than the free adobe but also a great alternative to the paid for version also.
  • I like the edit feature of Pdf because sometimes when your just filling in it only takes a certain size font and you can't change it to make everything fit but with the edit feature you can just add something like a text box and that way you can control the font and make sure everything fits on the line of a pre-filled document.
  • User-friendly is a huge PLUS as well as all the features. I have not explored them all yet. But so far I love working with it. My job is a remote position and I love the Stamps and Digital Signatures, as well as creating a Form. I am constantly having to create a form as I am in the Medical Administrative Field and PDF X makes it very easy and less time-consuming, which is a HUGE PLUS when a New Form is needed. And even if you have to Update an old form. Scan it, PDF X will recognize the text and you can RECREATE a brand new form that looks a lot more Professional. My next form will be using the QR feature to take payments. Scan the QR Code on your Statement and pay your bill!! I am almost finished with it. Can't wait until my Patients See this feature!!
  • Easy to use across devices, has almost unlimited functions, is simple and straightforward, and works fast.
  • I was able to use and edit pdfs on my phone and laptop without having to download the file each time I needed to switch between platforms.
  • The software is very easy to understand and use. Great for creating and editing. The document lock or security is highly recommended and useful.

Pros & Cons from Real Users

Pros

  • Bringing a 20mb scan down to under 3mb without visible quality loss was impressive. The process ran fast and the output stayed readable across every page.
  • Encryption workflow is minimal: upload, set a password, choose print and edit permissions, download. No unnecessary screens or upsells between starting the process and getting a secured file back.
  • Custom page ranges with individual file naming kept everything organized from the start. Each output section opened cleanly, formatting held, and no content went missing at split boundaries across the entire document.
  • Fifteen product photos merged into one PDF with sharp resolution, correct ordering, and proper orientation on every page. Layout toggle between portrait and landscape handled mixed aspect ratios without cropping anything.
  • Highlighting and sticky notes render crisply without affecting page load times. Color coding works well for organizing feedback by category, and every markup exports exactly as placed when downloading the final version.

Cons

  • A compression strength selector with labeled presets would help users pick the right balance.
  • Expiring passwords or time-limited access would add flexibility for documents shared temporarily. Right now protection is permanent unless manually removed, which works but doesn't cover every sharing scenario cleanly.
  • A visual page picker where you click pages to define ranges would feel more intuitive than manual number entry. Counting pages on a 200-page document and typing ranges introduces avoidable room for human error.
  • Resolution presets labeled for specific use cases like "screen," "print," or "email" would make choosing output quality more intuitive than the current auto-setting, especially for users unfamiliar with DPI terminology.
  • Annotation search or filtering by type would help on heavily marked-up documents. Scrolling through forty pages to find a specific comment gets inefficient, especially when multiple reviewers have added their own notes.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

MobiSystems
Founded: 2001
United States
mobisystems.com/mobipdf

Company Information

Primepdf
Founded: 2026
United States
primepdf.com

Alternatives

Alternatives

PDF Master

PDF Master

PDFMaster.app
PDF Studio

PDF Studio

Apryse
UPDF

UPDF

Superace Software Technology Co., Ltd.
SODA PDF

SODA PDF

Avanquest
SwifDoo PDF

SwifDoo PDF

SwifDoo Software
PDFSimpli

PDFSimpli

WorkSimpli Software LLC

Categories

Categories

PDF Features

Annotations
Convert to PDF
Digital Signature
Encryption
Merge / Append
PDF Reader
Watermarking

PDF Editors Features

Access Controls / Permissions
Annotations
Commenting / Notes
Compare Side-by-Side
Customizable Branding
Delete Pages
Electronic Signature
Forms Management
Full Text Search
Merge / Append
Offline Access
Optical Character Recognition (OCR)
Rearrange Pages
Rotate Pages
Watermarking

Integrations

Box
Dropbox
Google Drive
Microsoft OneDrive
MyWorkDrive
Yandex Disk

Integrations

Box
Dropbox
Google Drive
Microsoft OneDrive
MyWorkDrive
Yandex Disk
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