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.

Filter by
Sorted by
Tagged with
0
votes
0answers
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 ...
1
vote
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, ...
0
votes
0answers
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 ...
1
vote
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/...
1
vote
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 ...
-1
votes
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 ...
0
votes
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?
1
vote
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 ...
1
vote
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 ...
0
votes
0answers
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 ...
1
vote
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 ...
0
votes
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 ...
1
vote
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. ...
3
votes
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
0
votes
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 ...
2
votes
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?
0
votes
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. ...
2
votes
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. ...
0
votes
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 ...
0
votes
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 ...
0
votes
1answer
149 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, ...
1
vote
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 ...
1
vote
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?
2
votes
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 ...
4
votes
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?
2
votes
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 ...
2
votes
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 ...
4
votes
1answer
140 views

How to best read a PDF on Kindle?

Interested in reliable ways of converting, specifically, PDF files for reading on a Kindle. See also: https://stackoverflow.com/q/5429242/262852 Not looking for a steep learning curve, something ...
3
votes
2answers
62 views

Calibre fails to unwrap Georgian text

I am trying to use the calibre conversion feature to convert ebook written in Georgian from PDF to Mobi. The effect is however very poor. Someone in 10 lines gets unwrapped. I tried to use different ...
3
votes
1answer
159 views

Using K2pdfopt to prepare a document for printing

Can I use K2pdfopt to take a PDF, crop it to the tightest bounding box, and generate a new PDF with 2 consecutive (portrait) pages set side-by-side on the same (landscape) page such that they are ...
-2
votes
1answer
48 views

Is it legal to create an ebook from the book I bought and sell it? [closed]

This book is copyrighted 2011, can I make it to an ebook and sell it online?
6
votes
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. ...
5
votes
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 ...
1
vote
0answers
96 views

How do I convert a pdf with mathematical typesetting to work on a Kindle Fire 7?

There is a website for a free ebook in PDF format. See this section: Order a copy from Amazon or Barnes & Noble for $16.46 or download a PDF for free here. Click HERE for a PDF copy of the ...
1
vote
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 ...
6
votes
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 ...
4
votes
1answer
205 views

Can a PDF run scripts or code?

Can a PDF run JavaScript? If yes what are the limitations of running scripts in a PDF when compared to a browser? Can it do network requests using JS? Can it run other types of scripts? Is ...
5
votes
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 ...
4
votes
2answers
443 views

Alternative to Kobo to solve line wrapping problem

I was given a Kobo as a gift. I like the idea of reading a book on an electronic device because I'd like to be able to click and see a definition of a word that I'm not familiar with, rather than ...
2
votes
0answers
73 views

How can I publish an ebook online?

How can I publish e-books online so that I can sell them to readers?
3
votes
2answers
2k views

How to convert a html ebook to a pdf file?

Is there some program which can convert a html ebook (consisting of many html files located under different directories and linked to each other) to a pdf file? For example, some shell scripting (e.g. ...
0
votes
1answer
1k views

Service to nicely print a huge E-textbook? [closed]

I found an awesome textbook for my language studies. It is freely available as a pdf file, a Word document, as well as a browsable website. For me, language study involves taking a lot of notes in my ...
4
votes
2answers
94 views

Ereader that won't blur pdfs

I have the 2015 Kindle Wi-fi Touch. It's great, although when I try to read PDFs on it, it blurs them. I don't have a problem with small fonts, and I realise that ereaders are never going to be ...
6
votes
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 ...
3
votes
1answer
161 views

Adding Video links to an ebook

I am new to ebooks and am not really sure of the capabilities of the system. I have written a number of technical books which I was considering turning into video lectures. Now I think it would be ...
6
votes
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 ...
0
votes
0answers
44 views

Pdf restrictions

I have to sent a pdf file to a company and it should not possess restrictions of any type. However, I could not remove the "Changing the document" restriction. Could you help me or indicate how I ...
5
votes
1answer
203 views

is PDF not considered as an ebook format

I had a debate with my colleagues over PDF as an eBook format. I maintain, that eBook is defined as any book that is digitized, and that epub or other HTML based eBook rendering is just a type of ...
4
votes
1answer
1k views

What kind of k2pdfopt optimizations should I be using for these sample pages of a PDF?

I have a bunch of PDF files that follow this kind of layout: When I use k2pdfopt with options -dev kp3 -fc -j -1 -jf -1 0.75 -n- -wrap -hy -ws -0.2, I get this: As you can see the text gets mangled ...
5
votes
1answer
839 views

Why is Hard copy book black and white, but Ebook is color?

I have two textbooks I was required to purchase for Web Design classes. I noticed that the hard-copy paper book version is entirely black and white, but the ebook is all color. Aside from saving on ...