33

What worked: I read the error logs on my printers. They pointed me to permission problems with /usr/libexec/cups. Perms should be 755. To make this work: System Integrity Protection should be disabled. You must be a sudoer or have root permissions. Instructions Open a terminal. cd to /usr/libexec sudo chmod -R 755 cups That's it! Printing with older ...


11

This message happens when the certificate used to sign software gets revoked. The OS does check for revocations online so yes it blocks apps even if you don’t update the apps or the OS. For HP printers and scanners, the problem is the revocation of the certificates HP used to sign their software, not that macOS checks for revoked certificates. Things are ...


10

Old photos are unlikely to have colour depth in the millions nevertheless billions. In such a case, there is no point scanning images at anything higher than 24-bit. (See comments below.) In a nutshell, in certain circumstances some users may opt for billions of colours if they're doing high end photography, graphic design, large format printing, etc and if ...


9

Photoshop and the cheaper Photoshop Elements both have options that can take one large image and automatically crop out sub-images. In Photoshop, the command you're looking for is File → Automate → Crop and Straighten Photos. In Elements, it's Image → Divide Scanned Photos. For more details, read this and this. If you don't want to spend the money on ...


9

You may also want to look into the excellent VueScan. I haven't had a need for it in several years but back in the day it was really one of the best there is. Looks like it is still updated regularly.


8

I don't know of a way to do it with built in tools, but there is an OS X version of SANE that should be able to do exactly what you request (scanimage > image.pnm). SANE This is a TWAIN datasource for MacOS X that aquires images using the SANE backend libraries. The SANE backend libraries provide access to a large range of scanners connected through SCSI ...


8

Edit: While the app now launches, it still won't let me scan. Found this https://forums.macrumors.com/threads/hp-driver-framework-broken-in-catalina-10-15-7.2262865/post-29100622 saying that the certificate from HP has been revoked, and we're SOL until HP fixes it. I had this same issue this morning, did a search and found this. Apparently there is a ...


7

The Image Capture application can do this for you. Just connect your printer and launch the application. It comes with OS X. Image borrowed from: http://support.apple.com/kb/HT4505. You can also find instructions there under the heading How to scan.


7

From netstat's manual page: The netstat command symbolically displays the contents of various network-related data structures. There are a number of output formats, depending on the options for the information presented. The first form of the command displays a list of active sockets for each protocol. pse@Mithos:~$ netstat Active ...


6

You might also be interested in scanline, which does what you're requesting: http://blog.scottkleper.com/scanline-command-line-scanner-for-mac/ (Disclaimer: I wrote scanline. It's free and open source)


5

Another way to do it is to use lsof benefiting it shows the process that owns the sockets. Either combined with grep: sudo lsof -n -i | grep -e LISTEN -e ESTABLISHED (just use -e WAIT accordingly if you need it specifically), or with its own filtering based on TCP socket states: sudo lsof -n -i -s TCP:LISTEN,ESTABLISHED I know certain versions of netstat ...


4

There is also a free alternative with PDFSAM, that perfectly work on Sierra 10.12.4. You can separately scan first odd pages (beginning with the first page) and then even pages (beginning from the last page). After that you can mix all together with the alternate mix option taking care of reverse the even page, as the following image:


4

If you (remember to) set the scan mode to document feeder, it won't do the overview.


4

A great PDF compressor is Ghostscript (gs), which is native in most Linux distributions and easily installable for Mac OS X and Windows. Daniel summarizes summarizes it best here, with the key quote being his preferred options: gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dNOPAUSE -dQUIET -dBATCH \ -sOutputFile=foo-compressed.pdf foo.pdf


4

PDFScanner from the app store is awesome. Very fast. Simple. Achieves small file sizes.


4

I experienced the same problem with macOS High Sierra 10.13.6 on a MacBook Pro 13" 2018 and a Brother MFC-j6510DW. The solution is straightforward, you have to reset the printing system according to the Apple support document, macOS Sierra: Reset the printing system Go to System Preferences → Printers & Scanners: Control click in the list at the left, ...


4

That is because Easy Document Creator uses several apps underneath and not all are 64-bit, as required by Catalina. One of them is Select Scanner.app (in /Applications/Samsung/Samsung Easy Document Creator.app/Contents/Resources/Select Scanner.app), which is 32-bit for Intel and PowerPC (!). The other one, with the same problem, is ICCUpdater. There's ...


3

Easy, Open System Preferences Select the "Printers & Scanners" control panel Select the Scanner that you want to create the shortcut for Once the scanning window opens, right-click on the Scanner's application icon on the right side of your dock, and select "option/keep on dock" Next time you want to open the scanner, just click on its docked icon If it ...


3

BcScan I was appalled at the lack of something like simple-scan for linux (no lengthy preview scan for each page, scan multiple pages into one document, scan directly to PDF, no frills, fast scanning), so I wrote one: BcScan. BcScan is free and distributed under the GPL licence as a bonus.


3

I have one of these scanners and have noticed it can be sensitive to how it's connected on the USB bus. If the problem continues, try connecting it directly to a USB port on your Mac instead of through a hub (if it's not already directly connected).


3

You can try below steps: In System Preference > Printers & Scanners, press Control and click the printer and click Reset Printing System. This will remove all your printers. Go to Utilities and open Disk Utility. Click Macintosh HD in the left panel and then click Repair Disc Permissions in the right panel. Restart your computer. Re-install your ...


3

This is color depth. The Billions setting takes more disk space, so unless you need really high resolution of colors or see banding or just don't care about larger file size or slow scan times, choose Millions. Your reasoning is perfectly sound. Larger files for no discernible benefit - choose the lower fidelity.


2

Even simpler than Pages, you can use iBooks Step 1: Select all photos you want to combine into one pdf within your Camera Roll, they should be in the order you want them combined in Step 2: Press the share button (the up arrow in the box at the top left hand corner of the screen) Step 3: Tap iBooks icon prompting to "Save the PDF file in iBooks" That's ...


2

You can use Apple's Pages app to do this. Use the "+" button to add files from the image library. There is a pinch gesture to rotate/resize the images. The files can be emailed or exported to another app as a PDF from the "Wrench" popup menu in the top right corner of the screen.


2

The "fake duplex" in PDF Scanner works very nicely. The things I find frustrating are: Autocrop pages doesn't crop all pages in the batch the same. Sometimes it crops too much, so I avoid using Autocrop. Yellowed pages come out with a yellow background - There doesn't seem to be a means of setting the white level. It works very well with the HP LaserJet ...


2

OCRKit has both AppleScript support and a CLI. From their help page: AppleScript You can also script OCRKit to integrate it into your specific workflow. For example process incoming files, via shared folder, from MFP copy machine, etc. and simply tell OCRKit to open and thus process is via AppleScript: tell application "OCRKit" -- the ...


2

PDF Scanner app on the app store claims to have 'fake duplex' scanning, which allows dual sided document scanning without a duplex scanner. http://www.pdfscannerapp.com/


2

If it's working fine with your other computers over the same network, sounds like a possible driver issue. Here's a link to the drivers for the model printer you stated in your post. Also, at the end of your post, you said, "Before, all this stuff used to work." Before what? Did something change?


2

You may be interested in checking out Aristocrat, a simple app that performs OCR on a selected region of your screen. It's currently free on the App Store. Disclaimer: I'm the developer :)


2

You might want to try Vector Magic, it did very helpful turning my sketches into vector. It needs to be scanned first. We can adjust how detail the vector output.


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