11 Answers2025-07-07
I've run into the .acsm format issue more times than I can count. It's frustrating because it's not a direct e-book file but a license wrapper for Adobe Digital Editions. The good news is, there are ways to convert .acsm to .epub on mobile, though it takes a bit of effort.
For Android, 'Calibre Companion' is a solid choice if you pair it with a desktop version of Calibre. You transfer the .acsm file to your computer, convert it using Adobe Digital Editions, then sync it back via Calibre Companion. Alternatively, 'Libby' by OverDrive lets you borrow books in .acsm format and read them directly, though exporting as .epub isn’t straightforward.
iOS users have fewer options, but 'Adobe Digital Editions' itself can be used to download the e-book, though it won’t convert to .epub directly. Some users swear by 'BookFusion,' which supports .acsm and allows for cloud syncing, but again, conversion requires extra steps. For a true .acsm to .epub workflow on mobile, you might need to rely on desktop tools first, then transfer the file.
8 Answers2025-07-12
Most of the 'convert it' answers are duplicates of existing solutions. Instead of reading a DJVU file on your phone or computer (there are dozens of DJVU reader apps for each), or on your Kindle (where e-ink really shines for long-form, text-based reading such as novels and linear nonfiction), read it on your iPad instead. The screen is bigger, and you can leave the colors on for diagrams and such. Reading long-form content on the Kindle is where e-ink really rocks, but for all other types of content, embrace the multi-device reality and let each piece of tech do what it's best at.
No single device should be forced to handle all file types. We should leverage the strengths of each device to maximize reading convenience.
9 Answers2025-07-11
Why would you want to convert documents to read on your eReader? Most reading apps these days, including Google Play Books on Android and Apple Books on iOS, allow you to add PDF and DOC files to your library on the web, and they will magically convert them for you. (Seamlessly, for free, and, amazingly, often well.) But you asked for an offline method, so we can discount the cloud-based approach entirely. Why? Because you probably need to keep your files local for privacy, lack of internet, or because you’re working with sensitive documents. In such cases, converting within a local application is the only way to go — although the results from cloud conversion are often surprisingly good, and require zero effort on your part. Offline conversion gives you complete control over the conversion process and resulting file, but you have to manage the application and all its settings yourself.
10 Answers2025-07-13
I've come up with a new workflow for side loading mobi files. First, I use the free cloud storage app "FolderSync" to automatically transfer any mobi files added to a PC folder to a designated Android folder. Next, I use the Ebook Reader app and set the watch folder to the newly created Android folder. As soon as a new file is added to the Android folder, it is instantly added to the Ebook Reader library.
This is slightly over-engineered for one book, but incredibly powerful if you’re a side-loader of lots of e-books from a variety of sources. Dropping a file on your PC is enough, and within a minute or so it’s been downloaded, and you can fire up the eBook Reader app and begin to read the newly-downloaded e-book. This really shows off the flexibility of Android. We can leave this process as it is, or simplify/tweak it to fit individual needs.
9 Answers2025-07-14
I really like the wireless freedom of ‘Send to Kindle’ but I’ve found that my home Wi-Fi connection isn’t always as up to speed as I am. Occasionally it looks like the transfer has finished only for it to vanish when I open the book. A restart of the Kindle usually fixes it, but in the mean time switching to my phone’s hotspot (even on slow 3G) seems to send it straight through. I suspect the problem is with Amazon’s service and my connection – possibly due to a firewall or low upload speed. If you’re having problems using the web version or app to send books to your Kindle, try using a different connection – it’s a strange little fix but it’s worked for me on a few occasions when I really needed to get a book sent to my Kindle for a trip. It’s not a common problem but it’s one of those tech gremlins that’s good to know about – sometimes the simplest solution is to switch connection point.
8 Answers2025-05-29
For extremely academic content with lots of citations and a bibliography, proper formatting is crucial. Inline citations ([1,2]) have to be rendered as superscript and the bibliography has to be complete and not messed up by the converter. You can use ‘Extra CSS’ to style common citation patterns. For example, will style all tags with the class “citation”. Also, make sure the converter recognizes the bibliography as a separate section and not as just more paragraphs. You can help the converter by marking the bibliography’s heading tag (e.g. ) as a major division in the ‘Structure Detection’ settings. This will then also ensure proper page breaks before the bibliography.
8 Answers2025-07-05
What is your goal for your digital files? Are you looking to create a long-term archive of books to read later, or are you just looking to read a book that you've already purchased? If you're trying to build a long-term archive of books, then you'll need to consider how to make them last in the long-term. Saving your original book files (such as CBZ or PDF) to a backup system (such as an external hard drive or cloud storage) is a good starting point. The Kindle format files you create will likely be disposable, but you can always recreate them from the original book files as needed. Treat the conversion process as if you're creating a derivative work optimized for your current e-reader. The original book file is the master copy. Saving the original book files saves you from having to re-rip your books or re-download them in 5 years when your new e-reader doesn't support the format that you converted to. Sure, it's a little more work upfront, but it'll save you a ton of hassle in the long run.
9 Answers2025-08-08
Note that problems with DRM can also manifest as formatting issues. I had trouble with a purchased EPUB file (with Adobe DRM protection) lately. Problems seemed to stem from a wonky authorization status of my Adobe ID in the reading app. To verify the status of your Adobe ID, go to Preferences > General in Apple Books and look for the ID in the list. For other reading apps, check the relevant account settings. In extreme cases, a corrupted DRM protection might even prevent opening of the EPUB file. However, in some cases it will open, but with some really ugly styling. The only fix is to download a brand new copy of the book from the store – preferably one that was downloaded in authorized state in the first place. That’s why I try to avoid purchasing DRM-protected EPUBs and instead opt for stores that offer DRM-free versions of many books, like Kobo.
8 Answers2025-07-13
I often download mobi files that are anthologies of short stories, etc. articles. Calibre’s viewer handles these type of files well. The Table of Contents is displayed in the sidebar and as long as the mobi was correctly constructed, each short story or article will be listed as a separate entry in the TOC. You can click on any of these to go to that story. This makes the Calibre viewer far superior to simple text viewers such as Notepad, etc. which would just display a huge amount of text. The search function (Ctrl+F) also searches the whole book and returns results in a split second. Ideal for finding a particular quote etc. Very useful for anthology type books.
10 Answers2025-07-10
My cat stepped on my Kindle once. The resulting annotation, “hhhhhhhhhh”, is to date my most profound annotation on the book.