Available on Windows, Android, and iOS, MobiPDF (formerly PDF Extra) helps you create, edit, sign, convert, and secure high-quality PDFs on any device. With built-in scanning, two-way conversion support for 20+ file formats, and robust security features like password protection, customizable user permissions, advanced encryption, and digital signatures, MobiPDF has everything you need for effortless document management. Whether it's reading, commenting, and drawing on PDFs, combining multiple PDFs and images into one, creating new PDFs from different formats, scanning files, filling out PDF forms, signing and protecting PDFs, or redacting texts, images, pages, or the entire layout and formatting, MobiPDF does it all.
Written by the business, not verified by us.
Is MobiPDF (formerly PDF Extra) legit?
MobiPDF (formerly PDF Extra) (pdfextra.com) has a 4.6 out of 5 rating on OK.one, based on 131 user reviews collected here. It is listed under Electronics & Technology and its reputation is excellent. 89% of reviews are 4 stars or higher and 2% are 1 star; The business has replied to 100% of negative reviews; Reviews mostly discuss User experience, Product, App. Last updated 2026-08-25.
What reviewers say
AI generated
Reviewers overwhelmingly had a great experience with this company. Customers appreciate the simple interface and find it easy to navigate through various document tasks without high costs. Users frequently mention that the application provides a reliable alternative to other software while consuming minimal system resources. People enjoy the fast processing speed and the helpful features available for handling everyday documents efficiently.
However, some people mentioned that the program could sometimes work a bit faster or occasionally experienced performance issues during use. A few other people also felt that promotional pop-ups or payment requests for the paid version were somewhat irritating during work.
Auto-generated from all reviews of this business. For reference only.
Dear Customer Service Team,
Today, I purchased a bag of Miss Vickie’s Applewood Smoked BBQ potato chips at a Maxi store in Mascouche, Quebec, Canada.
Unfortunately, the chips appear to have no seasoning at all. They taste like plain, unflavoured potato chips, with no noticeable Applewood Smoked BBQ flavouring.
I have taken photographs of the packaging, including the information that may allow you to identify and trace the production batch. I would be happy to provide them if needed.
Thank you for looking into this matter. I look forward to hearing from you.
Kind regards,
Robert Charbonneau
Reply from MobiPDF (formerly PDF Extra)2026-08-25
We're grateful for your thoughtful feedback and keen observation regarding the product! Your insights are invaluable, and we truly appreciate your willingness to assist by sharing additional information. We're here to make things right, so please feel free to send us the photos of the packaging you mentioned. Thank you for reaching out!
Sincerely, The MobiSystems Support Team
I have so many options for fixing others' forms. Sometimes clients rely on me to fill out paperwork that is difficult to write in. I love how this program gives me options to fix anything and patch things together.
absolutely go for it. This is 100% a substitute for MS Office.
Reply from MobiPDF (formerly PDF Extra)2026-08-22
It's fantastic to hear that you find the app a complete substitute for MS Office! Your strong recommendation truly inspires us, and we appreciate your support! We’re committed to providing you with the best experience possible, and your feedback motivates us to keep improving. Thank you for being a part of our community!
Sincerely, The MobiSystems Support Team.
Easy to use, I appreciate the fact that it can be free.
Reply from MobiPDF (formerly PDF Extra)2026-08-20
We're glad to hear you find it user-friendly and appreciate the free features! Your feedback means a lot to us, and we're committed to making your experience even better. If you have any suggestions or need assistance, feel free to reach out.
Sincerely, The MobiSystems Support Team.
MobiPDF is fast, easy to use and uses very little system resources. I recommend the software.
Reply from MobiPDF (formerly PDF Extra)2026-08-12
We're excited to hear that you find the app fast and efficient! Your recommendation truly means a lot to us, and we appreciate your feedback on its resource management. Thank you for sharing your positive experience! Sincerely, The MobiSystems Support Team.
It's not Adobe, that's a good thing. There's no forced integration of AI, I'm never swamped with asinine pop-ups, like when I use Adobe. It's all I've ever wanted in a PDF reader. Please never change it.
Reply from MobiPDF (formerly PDF Extra)2026-08-12
It's fantastic to hear that you love the app for its simplicity and freedom from distractions! We’re committed to keeping it that way, and your feedback truly means a lot to us. Thank you for your support, and we look forward to continuing to provide you with the best PDF reading experience. Sincerely, The MobiSystems Support Team.
I had no problem with this app it works wonderfully
Reply from MobiPDF (formerly PDF Extra)2026-08-11
Hi Nichole! It means a lot to hear that everything has been smooth for you and that the app works wonderfully. Your kind words keep us motivated every day. If you have any suggestions for improvements or a particular issue, please reach out to us. Enjoy using it!
Mary-Ann from the MobiSystems Support Team
MobiPDF is working well to upload, open and allow me to access my documents and edit them safely.
Reply from MobiPDF (formerly PDF Extra)2026-08-09
Thank you for highlighting the app's reliability and functionality! We're delighted to know it's serving you well for your document needs. Your feedback truly inspires us to maintain this high standard. Sincerely, The MobiSystems Support Team.
using free version as I am a pensioner, works great, but irritating pop up for paid version each time you start
Reply from MobiPDF (formerly PDF Extra)2026-08-09
We’re glad to hear the app works great for you! We appreciate your feedback about the pop-up for the paid version; it’s important for us to know how it affects your experience. We’re always looking for ways to improve, so thank you for sharing your thoughts. Enjoy using the app!
Sincerely, The MobiSystems Support Team.
This application is good and recommended for editing pdf.
Reply from MobiPDF (formerly PDF Extra)2026-08-07
It's fantastic to learn that you find the app effective for PDF editing! We truly appreciate your recommendation and positive feedback. If you have any suggestions or need assistance, feel free to reach out. We're here to help! Sincerely, The MobiSystems Support Team.
Hey there! It's wonderful to know you find the app useful for editing and creating PDFs! We genuinely appreciate your positive feedback and support. If you have any more thoughts or suggestions, feel free to share them with us. We’re here to help!
Sincerely, The MobiSystems Support Team.
We're glad you find the app easy to use and truly appreciate your positive feedback! It means a lot to us. If you have any suggestions or need assistance in the future, feel free to reach out. Sincerely, The MobiSystems Support Team.
it was free and i didn't have to pay to download/save the document which was nice because the other times i filled out a form it asked for a payment as soon as im done editing and filling out the form. though i dont like that you need a membership for more than a few digital signatures
Reply from MobiPDF (formerly PDF Extra)2026-08-06
It's great to hear that you enjoyed the free access for downloading and saving documents! We appreciate your feedback regarding the membership requirement for additional digital signatures, and we'll certainly take your thoughts into consideration. Your support means a lot to us! Sincerely, The MobiSystems Support Team.
g
george scott · 2 reviews · Verified · Experienced 2026-08-06 ·
★★★★★
saved the day
Reply from MobiPDF (formerly PDF Extra)2026-08-06
Hey there! It's fantastic to hear that the app came to your rescue! We truly appreciate your wonderful feedback and are thrilled that we could make a positive impact. If you ever need assistance or have suggestions, feel free to reach out.
Sincerely, The MobiSystems Support Team.
Well, it seems like it would be a good tool, but I thought it was a free version instead of a trial paid version. So I won't be using it for long.
Reply from MobiPDF (formerly PDF Extra)2026-08-11
Hi David W.! It’s disappointing to hit a trial-style payment when you expected something free, especially if you only wanted to try the tool briefly. That mismatch can really change how a first impression feels.
Thank you for sharing what you ran into, it helps us make pricing clarity better so it matches what people expect before they start. If you try it again in the future, the availability and billing details are shown at the point where you choose the plan, so you can decide with confidence from the start!
If you have suggestions for improvements or a particular issue, please reach out to us.
Mary-Ann from the MobiSystems Support Team
No issues so far ... except the activation process
I've used quite a few PDF editor over the years.
So far nothing has went wrong.
Then again, nothing stellar either....but it's really too soon to tell.
On the other hand, having no choice but to sign up for a "free" trial that is actually a time-limited/temporary version that then reverts to a paid version automatically is deceptive.
The actual cost and different levels of subscriptions don't even show on the basic web-page. One doesn't see them until you create an account .... and find out that there is no way to just sign up for the "free" version.
And when asked about the cost of the software, the Chatbot does not mention all 4 levels, only the "free" and "Pro" levels. It seems not to know his detail.
...and to determine whether or not the "free" version will suffice for my purposes, I'm going to have to cancel the paid version I had to sign up for, figure out how to convert to the "free" version, try it .... and if the "free'" version is insufficient for my needs, convert back to one of the paid versions.
Seems somewhat disrespectful of my time and a comfort with deceptive sales tactics on the part of Mobi (in fairness, most of the software manufacturers I deal with seem to have be drinking the same kool-aid and treat their customers like cattle).
I let you know my other thoughts in 6.5 days.
Tom O'Brien
Reply from MobiPDF (formerly PDF Extra)2026-08-11
Hello Tom, Thank you so much for taking the time to share such detailed and thoughtful feedback — genuinely, this kind of input matters to us, and I want to make sure it doesn't get lost.
You've raised several fair points, and I'd like to address them directly rather than brush past them:
On the trial converting automatically to a paid subscription — I hear you, and I understand how that can feel like it takes the choice out of your hands, especially when the intent was simply to test the software first.
On pricing not being visible until account creation, and the differing subscription tiers — that's a completely reasonable expectation, and I don't think you should have to create an account just to see what something costs. The prices are available on our website here: https://mobisystems.com/en-eu/mobipdf/pricing
On the chatbot only referencing the Free and Pro tiers rather than all four levels — that's a gap I'll be sure to flag internally, since customers deserve accurate, complete information regardless of which channel they're using.
I also want to acknowledge the inconvenience you described around needing to cancel, downgrade, test the free version, and potentially resubscribe — that's a lot of friction for something that should be simple, and I don't think your time should be spent that way.
Rather than you having to navigate that cycle alone, please reach out to us directly here in support before making any changes. I'd be glad to walk you through your options personally, help you explore whether the free tier suits your needs without losing your current subscription in the process, and make sure you have full clarity on pricing and features upfront.
I've also made sure to pass your feedback along internally, as it reflects exactly the kind of experience we want to improve.
Take your time with your 6.5 days — I'll be here whenever you're ready to talk it through. MobiSystems
We appreciate your feedback highlighting the app's user-friendly design and efficient document storage! It’s wonderful to hear that it’s meeting your needs effectively. Your thoughts mean a lot to us, and we’re here to support you anytime! Sincerely, The MobiSystems Support Team.
Works great on .docx and .pdf files and is affordable.
Reply from MobiPDF (formerly PDF Extra)2026-08-07
Hey there! It's fantastic to hear that you're enjoying the app's performance with .docx and .pdf files, and we truly appreciate your recognition of its affordability. Your feedback means a lot to us! If you have any more thoughts or suggestions, we’d love to hear from you.
Sincerely, The MobiSystems Support Team.
E
Eddie · 2 reviews · Verified · Experienced 2026-08-06 ·
★★★★★
fast and effective
Reply from MobiPDF (formerly PDF Extra)2026-08-06
Hey there! We truly appreciate your thoughtful feedback! It’s fantastic to hear that you find the app both speedy and effective. Thank you for sharing your experience with us! We’re here to keep making your experience even better.
Sincerely, The MobiSystems Support Team.
It's great to hear that you find the app comfortable and helpful! We truly appreciate you sharing your positive experience with us. Your feedback means a lot, and it encourages us to keep improving our services. If you have any suggestions or need assistance, feel free to reach out.
Sincerely, The MobiSystems Support Team.
