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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How to upload my PDF in Stack Exchange?

I have a PDF file and want to upload this file here on this platform to generate OCR to my PDF file. Has any link or description to help me on this work to be accomplished?
Raju Peter Tudu's user avatar
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Why doesn't my PDF have updates made to the original EPUB?

In Calibre, I went in the editor and edited an EPUB and everything is fine; even sent the updated book to my Kindle and the updates are there. When I convert to PDF in Calibre and save to disk the ...
MStodd's user avatar
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Google play books reader inbuilt dictionary does not work for pdf ebooks

I like the Google play books reader app. I generally have ebooks in PDF format. I frequently use the dictionary feature but this feature does not work for PDF ebooks. So I need to convert them in EPUB ...
Alok's user avatar
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How can I convert a PNG to a PDF, where the width of the PNG is fitted to a page size, and it is broken apart into pages?

This seems like it ought to be obvious, but is anything but. I'm working in Windows. Suppose I have a PNG that is say, 1,200 by 6,000 pixels. I would like to be able to convert it to a PDF, such ...
CodeLurker's user avatar
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Looking for a PDF reader for Windows with good usability in tablet mode

I have a Surface Pro 7, and when I bought it, I intended to use it for reading A4 sized PDF books. Now I find that I almost never do so, because of low app usability. The features I am looking for in ...
rumtscho's user avatar
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Is there any best reader in all devices?

I have been using readera, xodo & kindle in my mobile for reading epub, mobi. Usually I read pdfs through default pdf Acrobat in the mobile. Also I'm using Ms edge for pdf, ice cream for epub ...
Abishethvarman V's user avatar
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1 answer
67 views

What content should be placed in the PDF Document Properties of a PDF Ebook?

I plan to release a free PDF download of a book I wrote, which recently went out-of-print reverting all rights to me. I am getting the printed book scanned into PDF files, one for each chapter. I am ...
Tristan Fabrini's user avatar
2 votes
2 answers
84 views

How can I "name" PDF pages?

I'm trying to export a PDF of a scanned book. Regardless of whether I try to use GIMP or LibreOffice Draw, I can't seem to name any of the cover pages! I want to have the page numbers on the exported ...
VHS's user avatar
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252 views

What (if any) are the current models of e-readers with good pdf text reflow?

I've had my I-river Story HD for ages (I think since 2013 or something), but I managed to damage the screen by dropping it, and now it's basically unreadable with all sorts of black lines going across ...
Tinkeringbell's user avatar
1 vote
0 answers
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What iOS or Android PDF readers have a "go back" functionality?

I am looking for a PDF reader that can handle large PDFs efficiently... but, importantly, allow the user to go back to a previous page once they follow a link. It seems to me this feature should be ...
Trekkie's user avatar
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Calibre cuts full anime pages

I have a quick question about calibre. My process is that is have a folder with JPG's of a manga that I read, I then zip that folder into a zip file and run it through calibre to get a PDF file in the ...
FMS's user avatar
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1 answer
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How to remove any kind of selectable fields in PDF

I am trying to remove these selectable fields from this PDF. The goal is to remove them and then run them through an OCR so that I make a searchable PDF. I have managed to make the PDF searchable ...
Jovan Markov's user avatar
1 vote
3 answers
756 views

Convert PDF to Epub, advanced features

I've read all similar questions here, and most of the answers suggest using calibre for this task, however, I'm trying to improve the output. Here I explain: I've extracted text from a PDF using ...
Attilio's user avatar
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Creating a PDF File

I have a folder that contains subfolders with different files inside them (html, css, images, audio files ...). It's basically the contents of a book. How can I create a PDF file from this folder, is ...
Issa's user avatar
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Where to buy non-kindle-format (epub,azw) e-books which look like the printed books?

If I want to buy e-copy of academic books, most of the publishers (Oxford, Cambridge, etc.) direct to amazon store or allow epub version. However, I do not want the e-pub or other formats (e.g. azw) ...
Varun's user avatar
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How to convert PDF's with footnotes for Kindle?

I have a collection of PDF files which I'm looking to load onto a Kindle. First, however, they need to be converted. Experimentation gives sub-par results by selecting and converting to mobi through ...
Nicholas Saunders's user avatar
1 vote
2 answers
27 views

How to fit the size of a font to fit a PDF fillable box

More of a pdf editing question. A lot of PDF forms restrict you to put 1 letter in each box when filling them Something like this: Has anyone found a way to fill these forms via computer ? Very hard ...
Michael's user avatar
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2 votes
1 answer
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want to convert OCR PDF to computer font

my pdf text is too blurry. so i want to convert it to computer font from scanned image.i already tried increassing quality by adobe/edit/preferences/page display.
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1 vote
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Amazon Kindle Fire won't allow allow links in PDFs to work

On my Kindle Fire I opened the PDF via the silk browser. The PDF contains links. On my iOS device I can click on the links in the PDF. On my Kindle Fire the links don't work.
iasksillyquestions's user avatar
4 votes
1 answer
697 views

How does Google Play choose page number / how to influence it?

Our book has quite simple page numbering: 1, 2, 3 and so on. (We don't use any special numbering for the first pages, e.g.: the book title is on the page 1, technical information about the book is on ...
Sasha's user avatar
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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, ...
Hisham's user avatar
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1 vote
1 answer
382 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/...
Jackoo's user avatar
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1 vote
3 answers
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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 ...
Patrick Nicodemus's user avatar
-1 votes
1 answer
33 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 ...
Sujata D's user avatar
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22 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?
Ooker's user avatar
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1 vote
2 answers
154 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 ...
user157588's user avatar
2 votes
2 answers
204 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 ...
user15131's user avatar
2 votes
0 answers
23 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 ...
Daniel's user avatar
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1 vote
0 answers
63 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. ...
Falrach's user avatar
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3 votes
2 answers
46 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
Sam Khawaja's user avatar
2 votes
2 answers
2k 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?
coge's user avatar
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0 answers
31 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. ...
Bijay's user avatar
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2 votes
2 answers
704 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. ...
Fluffy's user avatar
  • 141
0 votes
3 answers
104 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 ...
Educ's user avatar
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0 votes
1 answer
436 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 ...
Quesop's user avatar
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0 votes
1 answer
298 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, ...
herrmartell's user avatar
2 votes
1 answer
50 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 ...
Ooker's user avatar
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1 vote
0 answers
129 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?
Bookworm's user avatar
2 votes
1 answer
126 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 ...
Fede Rico's user avatar
4 votes
1 answer
123 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?
prthkms's user avatar
  • 141
2 votes
1 answer
88 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 ...
Nizar's user avatar
  • 121
2 votes
0 answers
957 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 ...
xcode's user avatar
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4 votes
1 answer
190 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 ...
Thufir's user avatar
  • 500
3 votes
2 answers
93 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 ...
zefciu's user avatar
  • 141
3 votes
1 answer
254 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 ...
Adi Shavit's user avatar
-2 votes
1 answer
74 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?
hanna's user avatar
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9 votes
2 answers
9k 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. ...
Clay Nichols's user avatar
6 votes
1 answer
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 ...
Czechnology's user avatar
1 vote
0 answers
132 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 ...
user9885's user avatar
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1 vote
2 answers
274 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 ...
Philip.J's user avatar