Questions tagged [pdf]

The Portable Document Format (PDF) is an ISO standard electronic file-format. Question about PDF can be about reading, converting, creating and editing such files.

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6 views

reflowing text in pdf with reasonable filesize

I generally use k2pdfopt to format scanned pdf for my kindle. But this software increases the file size insanely. After converting a file of say, 10 mb, the reflowed version takes a space around 190 ...
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0answers
8 views

pdf TOC creator for large files upwards of 120MB?

I used to use jPDFbookmark's bookmarks feature to create/adjust tables of contents for PDf files, and it worked perfectly well to that end until I input 130MB file and it was no longer functional, ...
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1answer
15 views

Possibility of converting a pdf containing equations to mobi

I have a pdf with lots of equations which gets distorted when converted to mobi format using calibre. Is there any reliable way of doing that? The equations in the pdf might have been written using ...
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2answers
25 views

How can I compress this pdf file without losing readability?

I have a large black and white pdf scan of a book. The book is 1700 pages, and is about 300MB. That is about 150-175kb per page. This strikes me as rather large. Two arbitrarily selected pages are ...
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1answer
25 views

How to delete the comment in the pdf?

I've tried using Adobe Reader and Adobe Acrobat to delete a comment in a pdf file. The comment was restored the moment I deleted it. How to delete it? File: https://github.com/mjs225/deletepdf/raw/...
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1answer
20 views

pdf with links to different books / folders

I hv received pdf with links to tv shows on tv; another pdf with links to different books (stored in google drive.) So you click on the picture and it takes you to the pdf book and opens it. I have ...
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13 views

OCR a scanned pdf without keeping the image

In acrobat, one can overlay text on the original document by the ocr facility. But is there any way of completely removing the existing images behind and only keeping the ocr'ed text? I want to edit a ...
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1answer
63 views

Is it possible to only extract text from a PDF file for free?

Even if I download books in mobi or epub format for my Kindle, I’ve noticed that files with lots of images/graphs disrupt the formatting. Is there a way to delete all the images from a PDF file for ...
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0answers
12 views

Is there a tool for heading detection?

Given a PDF without a TOC or bookmarks, is there a way to create a TOC by automatically detecting the headings?
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2answers
164 views

A nice platform for selling PDF books like Google Play. Any suggestions?

I'm an author who are currently selling books on Google Play. The service works really good and has a wide support for mobile devices etc. The huge downside is its limitations when it comes to ...
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2answers
851 views

How to convert Kindle format (.mobi or .azw) with annotations to PDF?

I'm looking for a way to convert a Kindle book, with several annotations in it, to PDF format, so that my annotations are also saved in the PDF file. Converting from .mobi or .azw to PDF seems pretty ...
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12answers
48k views

How to create clickable table of contents in a PDF?

I have many technical PDF ebooks where there are no chapters (no clickable table of contents or other means for quick navigation through a document) and therefore it's really painful to search for ...
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1answer
46 views

PDF Compressor online / software

I have a very large Ebooks I would like to Compressor their sizes and maintaining the highest possible quality. Is there Best PDF Compressor software or online website that I can Upload my private ...
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1answer
150 views

Best PDF app reader for iPad that emulates the paper book experience

Good day. I've used before PDF Expert by Readdle. But I really dislike seeing the gray spaces where the PDF ends and doesn't fit the entire screen. Now, I know that this is not "possible" per se, ...
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1answer
49 views

I would like to view full cover of converted pdf ebook originally purchased on Kindle Store

I would like to view full cover of pdf ebook originally purchased on Kindle Store and then converted with Ultimate. I see the thumbnail on my adobe reader app on my ios device. I would like to know ...
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1answer
135 views

JPG loses quality during ePUB to PDF conversion with calibre

I have a ePUB with a bunch of formulas as JPG files. In the ePUB they are super crisp, but during ePUB to PDF conversion with calibre all the images become blurry, I'd imagine they are JPG compressed. ...
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4answers
298 views

How to write a presentation slide using pdf

I want to create a PDF that can look like¹: This kind of format is good for presentation, since you can reveal items as you read downwards. I would like to know which application I can use to built ...
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2answers
64 views

Scan epub and pdf to ascertain absence of malware

Is it possible to verify the absence of malware in epub and pdf files?. I'm using a MacBook Air, macOS Catalina, and iPad mini iOS 13. What program can I use?
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10 views

Can I add sections in a pdf file not having any from the source?

The case is that I have a pdf document that does not have any sections downloaded from a website. Can I add some sections in it? For more clarification, please see the attachment. Thanks in advance ...
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0answers
10 views

Redefining “Page 1” in a djvu or pdf document

For context, I'm a graduate student and I rely on the indexes of digitized books pretty heavily. It is annoying that the page numbers in djvu/pdf files almost always fail to align with those of the ...
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0answers
10 views

Automatically add internal links to pdf?

Is there a way to automatically generate links for the table of contents of a pdf file? The idea is that for a pdf of a book it would be nice to have clickable links for the headings in the table of ...
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0answers
29 views

How to make the entries of an existing table of contents clickable as link to the corresponding pages?

I have many eBooks as PDF from SpringerLink, which I use for research purposes. The eBooks have indeed a table of contents (with more than 50 entries sometimes), but unfortunately it is not clickable. ...
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9answers
62k views

What is a good software for reading ebooks out loud?

I enjoy having the ebooks read out loud. My previous solution has always been to highlight the chapters I want to read and then turn on voiceover in Adobe Reader on my Mac. The advantage is that I can ...
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6answers
59k views

How can I translate my ebook?

I downloaded an important PDF e-book but it is not in English. Is there a software or another way I can translate the entire e-book into English or another language?
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2answers
40 views

How to bundle 5 PDF ebooks into 1 file for download

How to bundle 5 PDF ebooks into 1 file for download I have 5 PDF eBooks that I sell I want to have these 5 PDF file into 1 file
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0answers
36 views

How do I export the text from a PDF file and keep the proper formatting?

I converted a PDF to text. However, I would need to massively edit the text file, because lines of text are broken in the middle into two or more lines. I want there only to be carriage returns at the ...
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7answers
474 views

How to remove and add certain pages from pdf file?

There are PDF files which are very long and most of the pages don't provide any essential information. So I want to keep only those pages which are relevant and want to get rid of unnecessary material....
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3answers
919 views

How to change the font(s) used on a pdf, or improve how they are rendered?

I have an eBook (received from a university where I studied a couple of years back) that has a rather thin font. The text looks as shown in below image. This eBook was not published by the university ...
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2answers
186 views

Batch conversion of arbitrary formats to djvu, mobi, epub - not with calibre

I have a few thousand files, mostly PDF, many postscript, that I need to convert to several other formats. I can't use calibre (don't get me started) - I have considered writing scripts to dump pages ...
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0answers
18 views

Is there any app available for reading the books downloaded in PDF format?

I like to listen to audiobooks a lot. Is there application which can read the downloaded books directly? There are various app but you have to manually copy the paragraphs and then it reads for you. ...
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2answers
4k views

How to export (or share) a highlighted PDF from Kindle Reader?

I can email a PDF to my Kindle Fire Device. I can highlight and take notes in that PDF. I can export the notes and the highlighting. BUT I see no way to share/export the PDF with the highlights. ...
2
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1answer
71 views

Recommend a new e-book reader, main need is highlight and add notes to my books

I have an e-book reader ( in fact it is a gift) Kobo aura. The problem I faced with this e-book is that I am not able to highlight in pdf files, nor add some notes to my pdf books as in adobe ...
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1answer
251 views

Exact readable screen size of Sony PRS-650

I use a Sony PRS-650 and I often create PDF files for it with LibreOffice. These are usually documents which I read only once and I don't care about portability. (I don't read them on other devices ...
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2answers
1k views

Kobo Aura One or the new 7 inch Kindle Oasis for PDF files?

I have an old 2009 Kindle 4 with its low resolution screen. I work in academia so I read books, articles and technical documents in PDF format on a daily basis. I once tried to use my old Kindle for ...
81
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13answers
99k views

Reading PDFs on Kindle device

I have many interesting books and documents in PDF format. Can I read PDFs on Kindle in comfortable way? My concern is, that PDFs are adapted to the print page size and Kindle screen is much smaller....
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1answer
570 views

Things to consider for choosing an e-ink pdf ereader for science books and papers

I have taken a look at A4 size e-ink ebook readers for pdf files. I have found five models: SONY DPT RP1 Good e-reader 13.3" Onyx Boox Max Carta Dasung Icarus A4 And there is Remarkable, but that ...
5
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3answers
675 views

Calibre to Kindle Book Transfer

I just bought a Kindle Paperwhite. I am having troubles transferring books from calibre to Kindle. The major problems that I face are as follows: Font size even after changing the PDF format to ...
5
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1answer
6k views

How to install KOReader on Kobo Aura ONE

I am a complete beginner with Kobo or generally ebook readers but I got a Kobo Aura ONE reader mostly for reading PDFs on its large screen. However, the builtin reader is not very great and I have ...
2
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1answer
90 views

Standard settings for OCR'ing and compressing a book scan

Is there a set of standard best practices for compressing and adding text recognition to a scan of a book chapter? I'd prefer open source tools, but I'm hoping there is an existing script that ...
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3answers
1k views

What is the native pixel resolution of the viewable area on a Kindle Paperwhite 2 when displaying a .pdf file?

My goal is to produce files which, when displayed, are rendered 1:1, pixel-for-pixel, in order to ensure maximum text clarity. The values provided in the GUI version of the k2pdfopt program, seem to ...
4
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3answers
6k views

How convert multi-column PDF files to readable PDF in 6 inches display devices?

What is the best way to convert multi-column PDF file into readable format in a 6 inch display devices like kindle?
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0answers
30 views

What are “open” and “closed” settings in PDF bookmarks?

This is an excerpt extracted from the PDF bookmark, using JPdfBookmarks: Believe It or Not: Scientific Progress!?/44,Black,notBold,notItalic,closed,FitPage The Whole Is More Than the Sum of ...
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0answers
55 views

Calibre - output PDF with original page count

I have Calibre with opened KFX file, that shows after conversion to PDF 670 pages. However, the book itself has only 170 pages. How can I create PDF that will have correct page count?
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2answers
93 views

how to export images using abbyfine reader?

Presently, I using the abbyfine reader for text extraction. Is there a way to export the images from abbyfine reader software? Please advise.
7
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2answers
6k views

Annotation of non-Amazon books on Kindle Paperwhite

What I know: Using e.g., Calibre, I can put E-Books which I bought in other stores than Amazon onto a Kindle Paperwhite (2013). Also, the Paperwhite supports PDF reading. My Question is: Can I ...
4
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1answer
73 views

Identify if a PDF document is digital native

Is it possible to know if a given PDF is digital native or has gone through some kind OCR or digitization process. If yes, is it possible to do so programmatically?
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2answers
3k views

PDF vs DjVu benefits and disadvantages

What's the point of these two ebook formats? The quality and file size of the ebooks tend to be near identical and ereaders for these aren't exotic at all. Why would you choose one over the other?
2
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1answer
68 views

Automatic creation of bookmarks from Table Of Content

I've got this big problem: I have a PDF book with, say, 4 chapters and a bunch of paragraphs in each chapters. At the begenning of the book there is a non-clickable index with chapters, paragraphs and ...
6
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1answer
2k views

Creating an eBook with GIF animations

I run a technical blog and publish articles regularly that have GIF animations. Examples: one two three. I plan to aggregate a bunch of these articles into an eBook of sorts. I know I could break out ...
2
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0answers
716 views

How to Open pdf, ncx, opf files?

I have an ebook downloaded from my university elearning site, it was downloaded, not online reading. But it can only be opened and readed from university's elearning app (android only, no iOS app for ...