Today I learned that when a PDF's text includes URLs that are -not- marked up as hyperlinks, Adobe Acrobat Reader, Apple Preview, and Google Chrome's built-in PDF renderer all attempt to convert the URLs to clickable hyperlinks for the reader's convenience.

However, Adobe Acrobat Reader does a noticeably worse job than the other software. Specifically: if the URL is followed by punctuation, Acrobat includes the punctuation in the target of the hyperlink, resulting in a broken link. Apple Preview and Google Chrome handle punctuation correctly.

You can see this behavior by opening the attached PDF in Acrobat, Preview, Chrome, and Firefox. (The Microsoft Word document I used to produce the PDF is also attached). The PDF includes some hyperlinks, some plain text URLs, and a variety of punctuation.

The most interesting cases are #2 and #3:
- Adobe Acrobat converts both plain text URLs to hyperlinks automatically, but gets it wrong, including ALL the punctuation, including the comma, the quotation marks, and the closing bracket (if present).
- Apple Preview converts both plain text URLs to hyperlinks automatically, and gets it right, including no punctuation
- Google Chrome (for Mac) does NOT convert the URL in #2 to a hyperlink; it converts the URL in #3 correctly
- Firefox (for Mac) doesn't convert either of them.

If Acrobat were improved to behave like Apple Preview or Google Chrome, LOTS of documents around the world would start having working, clickable links for readers that use Acrobat. In particular, URLs in the footnotes/citations/bibliographies of a large number of scholarly publications would start working for people.

I use Microsoft Edge in Windows 10 to view pdfs because it loads pdfs very quickly, and is smooth and responsive; it takes less than 5s to open 300MB+ pdfs.

Installed Adobe Reader recently because I needed the Fill & Sign function. I use Reader to Fill & Sign pdfs while viewing other pdfs with Edge.

After the installation, Edge takes more than 15s to open a pdf, even with small pdfs under 1MB. It has also become laggy. Chrome isn't affected though.

Completely closing Adobe Reader and reopening a pdf with Edge again solves this issue. It's a workaround but after a couple of days it's starting to get annoying. Please fix this.

Following bug has been introduced with a recent Adobe Reader (or Windows?) update. It affects all our customers.

Steps to reproduce:
1. Create a 64 Bit C# application (32 Bit Works)
2. In the application, use ActiveX, or WebBrowser control and open/navigate to "C:\documentname.pdf"

Expected result: PDF shows up

Actual result: Screen stays gray. In the Windows Error Reporting you will see that AcroPDFImpl64.dll has crashed.

It is very important for us, because our customers rely on this functionality and our software product is currently not useable due to this bug.

Please contact me through email info at hickelsoft.de . Thank you very much!

Best regards,
Daniel Marschall
CEO of HickelSOFT

Following bug has been introduced with a recent Adobe Reader (or Windows?) update. It affects all our customers.

Steps to reproduce:
1. Create a 64 Bit C# application (32 Bit Works)
2. In the application, use ActiveX, or WebBrowser control and open/navigate to "C:\documentname.pdf"

Expected result: PDF shows up

Actual result: Screen stays gray. In the Windows Error Reporting you will see that AcroPDFImpl64.dll has crashed.

It is very important for us, because our customers rely on this functionality and our software product is currently not useable due to this bug.

Please contact me through email info at hickelsoft.de . Thank you very much!

Best regards,
Daniel Marschall
CEO of HickelSOFT

Name der fehlerhaften Anwendung: HsRunStarter.exe, Version: 8.0.0.0, Zeitstempel: 0x60d0a93a
Name des fehlerhaften Moduls: AcroPDFImpl64.dll_unloaded, Version: 21.5.20048.43252, Zeitstempel: 0x60b07ef8
Ausnahmecode: 0xc0000005
Fehleroffset: 0x0000000000059f39
ID des fehlerhaften Prozesses: 0x1b7c
Startzeit der fehlerhaften Anwendung: 0x01d7680d15d9e38e
Pfad der fehlerhaften Anwendung: D:\CORA2012\BAP\bin\HsRunStarter.exe
Pfad des fehlerhaften Moduls: AcroPDFImpl64.dll
Berichtskennung: 7672e4f7-7674-4f1e-80dd-a7b7e4a8415a
Vollständiger Name des fehlerhaften Pakets:
Anwendungs-ID, die relativ zum fehlerhaften Paket ist:

The copy paste function doesn't work with words that contain letters with accents on my Mac running Big Sur. Letters with accents paste as a space. It doesn't matter where I paste the text. The result is the same. This is a real problem for people using languages with a lot of accents. I'm able to open the same PDF using Preview and copy/paste the same text and see all the letters.

I opened another PDF that was created years ago with accented letters. The copy/paste worked in my browser and in Preview. I had the same problem when copying/pasting using the Acrobat Reader on Big Sur.

The version I have installed includes support for Intel based Mac computers which I assume is the problem. Hopefully an Apple Silicone version of the reader will be available soon.

I'm working on a book and constantly use very large documents (300-600 pages) that I need to search through for specific terms. Trying to search for something as simple as a single word doesn't work 95% of the time. The app either (1) freezes and never returns results or (2) presents hundreds or even thousands of results for the first letter(s) of the term I entered in the search box. Ironically, I've uploaded those same huge PDFs to my iPhone and Adobe Acrobat Reader works perfectly, easily finding those exact same words in those exact same huge documents within second. So I know it's not about the length/size of the document -- it's something Reader isn't doing right on my MacBook Pro. I'm attaching a screenshot of me searching for the term "senna" and Reader showing as results 496 words that start with "se". I'm also attaching a screenshot from my iPhone with the instant and correct search results on the same PDF - the term "senna" only exists 4 times in the document. This happens to me every day with dozens of large PDFs. Please help! It's very frustrating. I often have to force close Reader because it can't handle my search. And it only happens in large docs. Thanks! (Using 2017 MacBook Pro with touch bar and the latest OS and iPhone 11 Pro with the latest iOS). -- NOTE: Tried uploading JPEG screenshots and the website wouldn't let me.

I'm working on a book and constantly use very large documents (300-600 pages) that I need to search through for specific terms. Trying to search for something as simple as a single word doesn't work 95% of the time. The app either (1) freezes and never returns results or (2) presents hundreds or even thousands of results for the first letter(s) of the term I entered in the search box. Ironically, I've uploaded those same huge PDFs to my iPhone and Adobe Acrobat Reader works perfectly, easily finding those exact same words in those exact same huge documents within second. So I know it's not about the length/size of the document -- it's something Reader isn't doing right on my MacBook Pro. I'm attaching a screenshot of me searching for the term "senna" and Reader showing as results 496 words that start with "se". I'm also attaching a screenshot from my iPhone with the instant and correct search results on the same PDF - the term "senna" only exists 4 times in the document. This happens to me every day with dozens of large PDFs. Please help! It's very frustrating. I often have to force close Reader because it can't handle my search. And it only happens in large docs. Thanks! (Using 2017 MacBook Pro with touch bar and the latest OS and iPhone 11 Pro with the latest iOS).

I share PDFs to clients and they correctly receive the email and click the button link which displays the shared PDF.
I'm sure that in the past I've received email notifications whenever they have viewed the file. (The status of the PDF then updates in Adobe Acrobat Pro DC desktop app to say 'VIEWED' or 'OPENED'.)
Recently I've had no notifications and no updates and yet the client HAS received and viewed the PDF. Through much testing, I've worked out that the notifications/updates only trigger if the client is signed in to Adobe (with an Adobe ID) which I find limiting.
I like the assurance that a PDF HAS been VIEWED (and therefore RECEIVED) as part of my workflow and suggest that the act of clicking the link button in the recipient's email SHOULD trigger a VIEWED notification regardless of whether the person is signed in to Adobe or not. Afterall, the email that I am entering to share the PDF is the same as the one receiving the email. Clicking the link implies that they are giving permission to view the PDF from me.
WeTransfer triggers a download notification using the same kind of emailed link.

Adobe Reader is very slow after I resize the window on my Windows 10 laptop. This includes maximizing and restoring down a window. If I only open one document, it usually takes 1-3 seconds to respond, depending on how complicated the document is. This is already significantly slower than Firefox and Chrome. Furthermore, if I open two documents, resizing takes 3-6 seconds, and longer when more document tabs are opened. This is a big performance issue. Looks like Adobe Reader is rendering all the documents synchronously after the window is resized, which is completely unnecessary; it should only render the current tab synchronously and render the other tabs in the background.

The two problems add up and cause significant performance issue when I try to move the window between monitors. The window often get stuck for at least 10 seconds, because it will do the inefficient rendering several times; one time for resizing the window on one monitor, one time for changing the scaling because two monitors have different DPIs, and one final resizing for maximizing the window on the new monitor. This results in an unacceptable "not responding" freeze.

I do hope Adobe could improve the performance of PDF rendering. The current version is really wasting me so much time waiting for the frozen window.

Concerning the window "Recent opened" or "last viewed", I am not sure of the name since my language version is polish.
I had a file on the list, that I wanted to view again. Unfortunately it was on a share that was not connected at the moment.
Acrobat Reader could not open it, and it removed it from the list. I connected the share, but I lost the possibility to open the file since it was not on the list anymore. I had to find it again, what was really time consuming.
The file should be kept on the list until user deletes it.