Rename template for "number of pages"

[r728626]

Calibre has "number of pages" variable when I'm saving it?
I'm using default:
{authors:sublist(0,1,&)}({languages}), - {title} - {pubdate}

But in the reference page, there's even size but not page numbering

[ilovejedd]

That's because the number of pages for reflowable formats vary (device, font face, font size, line height, margins, etc). I'm sure there's a plugin available to calculate the number of pages and store that value in a custom column.

[BetterRed]

Calibre does not have a built-in 'number of pages' column.

The Count Pages plugin will calculate custom columns for number of pages, word counts and readability indices = see Index of plugins

BR

[r728626]

Originally Posted by BetterRed

Calibre does not have a built-in 'number of pages' column.

The Count Pages plugin will calculate custom columns for number of pages, word counts and readability indices = see Index of plugins

BR

That takes a while. On windows there's a simple column which calculates a whole folder pages almost instantaneously.

To install a plugin, wait several minutes, it's not practical. Perhaps programmers can make this plugin a variable on calibre, so it can be performed more easily?

[BetterRed]

Originally Posted by r728626

That takes a while. On windows there's a simple column which calculates a whole folder pages almost instantaneously.

To install a plugin, wait several minutes, it's not practical. Perhaps programmers can make this plugin a variable on calibre, so it can be performed more easily?

I could run Count Pages against my 130,000 book library with one keystroke (Alt+C), sure it'll take a while, but why would I do that?

I run Count Pages against a book when I add it to the library and the counts are in the database forever more.

Does Windows show page counts for EPUB, MOBI, ..., or TXT files ? Calibre can.

BR

[davidfor]

Originally Posted by r728626

That takes a while. On windows there's a simple column which calculates a whole folder pages almost instantaneously.

I don't think I've seen this. Are you saying that Windows will show a page count for epubs in Explorer? Did you need to add anything or change settings to see it?

[BetterRed]

Originally Posted by davidfor

I don't think I've seen this. Are you saying that Windows will show a page count for epubs in Explorer? Did you need to add anything or change settings to see it?

PDFs and DOCXs - not EPUBS, not even LRFs - but to be fair MS ditched LRF

BR

[r728626]

Originally Posted by BetterRed

I could run Count Pages against my 130,000 book library with one keystroke (Alt+C), sure it'll take a while, but why would I do that?

I run Count Pages against a book when I add it to the library and the counts are in the database forever more.

Does Windows show page counts for EPUB, MOBI, ..., or TXT files ? Calibre can.

BR

This plugin is horrible for .pdfs
If it's a large file then, forget it. It's going to run the process for hours consuming CPU, and still hasn't been finished.
Windows took exactly 5 minutes. But it can't rename files, which is the whole reason behind the template feature.

I can't understand why this community is so unable to accept negative points in calibre, specially when it's about .pdf format.
Many .epubs are just trash .txt files.

This function must be worked better, because even windows can perform better than calibre. Perhaps some open-source renaming tags could do this using the windows engine, which I'm not aware.
But calibre, and even manually installing the plugin, hasn't been a solution for me.

[davidfor]

Originally Posted by BetterRed

PDFs and DOCXs - not EPUBS, not even LRFs - but to be fair MS ditched LRF

In that case it isn't comparable. Both formats almost definitely have the page count in metadata somewhere.

[theducks]

Originally Posted by r728626

This plugin is horrible for .pdfs
If it's a large file then, forget it. It's going to run the process for hours consuming CPU, and still hasn't been finished.
Windows took exactly 5 minutes. But it can't rename files, which is the whole reason behind the template feature.

I can't understand why this community is so unable to accept negative points in calibre, specially when it's about .pdf format.
Many .epubs are just trash .txt files.

This function must be worked better, because even windows can perform better than calibre. Perhaps some open-source renaming tags could do this using the windows engine, which I'm not aware.
But calibre, and even manually installing the plugin, hasn't been a solution for me.

IMHO PDF is the trash format. It was made to be a Print Exactly the same everywhere format.
With a little effort on your part: Open in Adobe: Note page count (on toolbar): Enter that into Calibre (custom column)

[davidfor]

Originally Posted by r728626

This plugin is horrible for .pdfs
If it's a large file then, forget it. It's going to run the process for hours consuming CPU, and still hasn't been finished.

Whoops, forgot about something with this. It's incomplete. See the posts below for more in the story.

The Count Pages plugin does not calculate a page count for PDFs. If that is the only format you have in the library for a book, the plugin will display a message to tell you it cannot do the page count. It can do a word count, but it will need to extract the words from the PDF which does take time.

Windows took exactly 5 minutes. But it can't rename files, which is the whole reason behind the template feature.

See above if you are talking about PDFs. If you are talking about other formats, please state what they are.

I can't understand why this community is so unable to accept negative points in calibre, specially when it's about .pdf format.

The community is happy to discuss the negative points of calibre. But, so many of the points people put up turn out to be a misunderstanding. And the community completely understands that PDFs have good points. But, they also have bad points. These tend to get discussed more as people try to work around them.

Many .epubs are just trash .txt files.

Not in my experience. I have many high quality, well formatted epubs. If you are only looking at epubs from places like Project Gutenberg, then I can under that viewpoint. But, there are also a lot of PDFs that are "just trash .txt files.".

This function must be worked better, because even windows can perform better than calibre. Perhaps some open-source renaming tags could do this using the windows engine, which I'm not aware.
But calibre, and even manually installing the plugin, hasn't been a solution for me.

In that case, it doesn't sound like calibre is for you. And there are a lot of people that don't like it for one reason or another. But, a really important thing is to make sure you are comparing the same thing. At the moment, you sound like you are comparing a plugin that counts pages in epubs to something that counts pages in a PDF. The requirements are vastly different.

[BetterRed]

From the Count Pages first Post - end of para #4

. . . the configuration you can choose to use the page count used by the calibre e-book viewer, or you can use the Aobe algorithm used by their ADE software and some devices like a Nook. However if the format being counted is a PDF, then as of v1.4.2 there is now a special optimisation to read the actual page count rather than estimating it using any of the above algorithms.

. . .

And from the Count Pages Version Log

Version 1.4.2 - 31 May 2012
Minimum version set to calibre 0.8.54
Optimisation for counting pages for PDFs to read the page count from the PDF info rather than estimating it

---

Zo, i just did a small test with 7 PDFs of various provenance - here are the results



The numbers in the Titles are from File Explorer/XChange Document Properties. The Have Read indicates if Count pages got the right answer. Books 2 & 4 are rubbish documents that I created with a online Form layout tool, I can't explain the first one (A 4 D) - if anyone wants that PDF to take a look at what's going on let me know.

The bottom line is that Count Pages does not handle PDFs by converting it to a reflowable format, it gets the page count from the same place as File Explorer - most of the time Ψ³

BR

[BetterRed]

Originally Posted by r728626

Perhaps some open-source renaming tags could do this using the windows engine, which I'm not aware.
But calibre, and even manually installing the plugin, hasn't been a solution for me.

Calibre is open source, the code is available from GitHub, see Get involved on the Home page.

The optional plugins, such as CP, are delivered as source code. People with access to the requisite skills can open them up and modify them for their specific use case.

BR

[r728626]

For me it's not practical, for the amount of time wasted and CPU usage. While Windows can perform this on 5 seconds, for a 1000 page .pdf of 100mb.

[davidfor]

Originally Posted by BetterRed

From the Count Pages first Post - end of para #4

[INDENT]. . . the configuration you can choose to use the page count used by the calibre e-book viewer, or you can use the Aobe algorithm used by their ADE software and some devices like a Nook. However if the format being counted is a PDF, then as of v1.4.2 there is now a special optimisation to read the actual page count rather than estimating it using any of the above algorithms.

And for some reason, if the algorithm chosen is the ADE version, it will give an error that there is no suitable format if PDF is the only one available. That's what I saw earlier and didn't think to change the algorithm. I'll have to check the code to see if there is a hint why, but I think it is wrong. I don't know if ADE will display PDF, but the Adobe RMSDK based ereaders will and they would not be calculating the page count using the algorithm used for epubs. Or do they of the ereader supports PDF reflow?