I noticed that Willus' website willus.com is currently down. I am not hosting
on this site here.
For contact with Willus and download-links for k2pdfopt please head over to
There are download links for some versions in this post, and if you need
more, you can
probably ask Willus to update this post.
Regarding my GUI: I am currently not working on a new version. The reasons
first I have very little time due to other projects and second that with k2pdfopt v2+ the
demand for a 3rd party graphical user interface has dwindled notably (which is under-
standable). You should be able to use GUI version 126.96.36.199 with k2pdfopt v2+ just fine
if you like multicore processing. Aside from that I was planning to implement the preview
function of k2pdfopt v2 in my GUI as well since Willus was so kind to provide the means
for it (and a way to get rid of the..i guess it makes it 4th party... pdf library again.
But my motivation is quite low currently especially with the number of users pretty much
down to a quarter or something.
If you have any wishes for future functions I can implement in the GUI, please feel free to
send me a message (E-Mail, Through the GUI, Twitter @keex0r).
I finally got around to fixing the various bugs I mentioned earlier this
I am releasing version 188.8.131.52 of the GUI today which hopefully is a good step towards
a smoother performance. Apart from making the multicore part more stable I have good
news for all my Asian visitors since you are now able to convert files with "Asian letters"
(sorry..) directly without renaming them.
Changelog version 184.108.40.206
If something doesn't work properly, just drop me a message and I'll look into
it. Have fun
with the new version.
Download version 220.127.116.11
Well, it's been a while again since the last update. I just wanted to clear a
up in kind of a frequently-asked questions-style. Oh and by the way, thank you all
for reporting bugs in the program. I always try to answer your questions as quickly
as possible but it may take a few days from time to time.
So, let's begin:
"I am a bit reluctant to start this endeavour though. I can't really
invest a lot of time into the project due to other reponsibilities and if I were
to make translations I could only do German and English on my part. This doesn't
help a lot of people so I would need to involve other people. This is where the
thing gets tricky. I would not only need to find helpful persons like you who
would translate the program and all the commands but I would also need to
coordinate the efforts, organize proof reading (this is the internet, after all
;-)) and the like.
You kind of open up another box of the pandora with involvement of others. Also there isn't a community in anyway around this project so it would be near impossible to find capable translators (other than Chinese :)).
The GUI can be translated in parts today anyway. All the commands can be freely changed to any language one likes. Just copy the default.ini to another filename (default.ini should not be changed directly because it will be overwritten on updates) and edit away. There is an explanation in the readme file. I would publish other profiles on my site happily."
- Myself, August 14th, 2013
So the important question is "When?!". Since all Duke Nukem Forever jokes
work anymore I will just say "When it's done, probably before Half Life 3 is released."
No, I frankly don't know exactly. I'm working a lot on other more serious projects at
work so I'm not exactly overly motivated to use the weekend for the GUI but maybe
I'll get to it in the next days. The fixes shouldn't take too long to implement anyways.
So, stay tuned, just check for updates from time to time and you'll see.
Have a nice time and thanks for reading this wall of text. Here have a kitten:
version 18.104.22.168 is ready for release in my opinion. It contains a cool new feature:
As teased before the conversion process now utilizes multi-core processors by
launching multiple instances of k2pdfopt and thus greatly improving conversion
speed. Unfortunately I noticed a bug in my automatic updater which leads to you
being unable to use it (the extraction process may fail and I did not yet implement
a function for updating the updater, doh'). Therefore you need to download the
Patch notes for version 22.214.171.124:
There are some issues with .DjVu files because it seems I can't reliably
the number of pages of the file in some cases which can lead to unfortunatly balanced
workloads for different processes. Can't really help this at this point but that's the way
It would be cool to hear from you if the multicore processing improved the
for you and if you ran into any troubles.
Long story short (hooray for ziplining!), here is the file, have fun:
Download version 126.96.36.199
some news about an upcoming feature. It will be possible to use multithreading in
the conversion process to improve the conversion speed of larger documents.
In my preliminary tests (actually it's pretty much ready) this measure is cutting the
time for a conversion by over 50% on my quad-core which is really great in my
So keep checking for updates either here or with the software. I think the update
will be released pretty soon.
And since I just noticed the date, happy Independence Day to my friends in the
just as a quick note about server uptime/stability:
I'm trying to keep the update/feedback server running as well as I can. The
is, that it is not a professionally run server but merely a PC with my software on it.
That PC might need to be restarted from time to time and can also experience net-
work problems. Usually I try to start the server on another PC before I shut down
the first to avoid any downtime. When I can't really anticipate are bugs in the soft-
ware that shut it down. There should be only few but one anywhere under rare
circumstances is enough and it can take a while for me to notice that the server has
The quintessence from all this is: There might be times when the server is down. So
in that case just try again later.
For those who are interested, I just uploaded the source code of version
To quote myself (frmMain.vb):
'* If you like to use the code, it's fine by me. The methods applied here
'* are quite universal for GUI applications, so even if you don't use
'* the code to make an improved and/or adjusted GUI for k2pdfopt it might
'* come in handy.
'* If you use large portions of my code it would be honest of you to credit
'* me for it. It would also be nice to hear from your projects and I'm
'* of course always open for suggested improvements, since I'm sure there
'* are lots.
'* Anyway, have fun with the code. I'm aware it's not well commented but
'* every class at least contains a little introduction part like this one.
'* Best regards
'* Jens Wallauer, Marburg, Germany, 23.06.2013
Download Source Code v188.8.131.52
Today I'm releasing version 184.108.40.206 of k2pdfopt GUI. This version includes
the announced improvements of the
online features, bugfixes and a new default.ini that provides (hopefully) all the features of k2pdfopt v1.65.
It is now possible to automatically update the GUI to the latest version. To achieve this the GUI downloads the
latest version as a .tar.gz archive from my server. The GUI then closes itself and starts an updater (k2updater.exe)
that extracts the new version into the old application folder. You can then restart k2pdfopt GUI.
Please note: The options you set in the option dialog will be reverted to default values, since I can not guarantee
that the config.ini of the new version is compatible to the old. You therefore need to reenter the path to k2pdfopt
and the Tesseract language file folder after the update.
You can furthermore download the latest default.ini from the update-dialog in the GUI. The commands will be
Please note: You need to reload the default options from "Tools->Profiles->Load default commands" or
merge the new defaults with your current profile (same menu) in order to see the new commands.
I would conclude the update notes as follows:
That should be about it. Please let me know if anything doesn't work as it
should or if you miss any
Download version 220.127.116.11
I'm currently working on an updated Update-process and a more reliable
server. I will handle feedback and updates
with the same server from then on, so it makes it much easier for all of us. There are also a few other bugfixes in the
update. I also want to go over the default options to include changes in k2pdfopt.
I can't tell when it will be done, but I think "soon" is the correct word.
Please keep sending me bug reports and your opinions. This helps a great deal in improving the program.
All the best
So it's finally here. The all new version 2.0 of k2pdfopt GUI!
It has all the features of the old 1.x versions, with less weaknesses and even more functions!
Please read the ReadMe.txt included in the archive for further information or drop me a message :-)
Please note: This is the initial release of a complete rewrite, so there will
be bugs I haven't found yet. If you inform
me, I can fix them asap. :-)
If the Feedback function does not work for you, you might be behind a firewall or a proxy server which interfers with
the connecting. I can't really fix that for you. The connection is established on port 9978, so you can try a port forward
or you have to just write me an E-Mail. Sorry for this.
I hope you enjoy the new version!
Download version 18.104.22.168
The source code will be published in the near future.
I have two screenshots of the new version 2.0 of the GUI. The basic program
is pretty much complete, what I need
to do now is add all features of k2pdfopt to it. This shouldn't take too long but it's still a tedious piece of work so I
guess in best tradition it's done when it's done.
I just wanted to let you know that I am currently working on a complete rewrite of the GUI. While it shouldn't change
that much in regard to the interface, it will be much more flexible. Advanced users will be able to fully customize the
available commands (either through an .ini file or another little tool, I haven't decided yet). This also enables me to add
new features of k2pdfopt much easier.
Profiles from then on will be saved in terms of the included commands as
well. So you can make a profile that only shows
your most important options for example. I think I will also include a kind of "Merge profiles" function though, which will
let you add the newest default options to existing profiles. The whole system may be a little less intuitive to use, but for
most users it should not pose a big difference to how profiles have worked in the past.
No screenshots yet, but you can look forward to it.
Fixed a bug that caused the program to crash on Windows XP (and possibly on other Windows versions as well).
Download version 1.04.2
Download version 1.04.2 Source Code
Well, turned out I got a little bug in the
version released yesterday that prevented the new options from working
I fixed it, now they should be working properly.
Download version 1.04.1
Download version 1.04.1 Source Code
In this update I finally present a new version of the GUI, 1.04. It includes
a few improvements. It now supports the OCR
functions introduced in k2pdfopt 1.5. In order to use the Tessaract OCR engine you have to download and extract the
Tessaract language files. Click on the respective button in the GUI and choose the language of your document. The down-
load is started through your webbrowser. (As a reminder: The GUI does still not contain any network functions. If you
notice that it does, please do not use your version of the program but redownload it on this site. Your version might have
been compromised by malware.
After the download extract the archive to a location of your choice and select the base folder (which contains the tessdata
subfolder) in the GUI. You can then use the Tessaract engine of k2pdfopt. Environment variables are set accordingly and
automatically (this part needs administrator rights).
Two other functions (erase vertical lines and resize images to fit the output) were also added. Keep in mind that you can
always use additional, unsupported options through the "additional command line options" input box in the GUI.
If a new version of k2pdfopt is released and you are sick of the GUI complaining about the unsupported version, you may
add the filesize in bytes as a new key to the supportedfilesizes.ini with whatever key you like (e.g. Whatever=236512365).
If you miss any important options, please send me a message and I can add the respective option.
Download version 1.04
Download version 1.04 Source Code
In this update I am releasing the source code of k2pdfoptgui. As you might
have noticed, in the last few month I couldn't find
a lot of time to work on the project and therefore everything kind of stalled. When a user of the program asked me if I would
consider releasing the source code, I saw that nothing really speaks against that.
Be warned that the code itself isn't really pretty...but it works, doesn't it.
Please read the README.txt included in the archive.
As promised, I just uploaded a new version of the GUI, which can be used
without drama with k2pdfopt v1.50. Please note,
that none of the new features are supported yet. I just modified the program to work with the new version.
But you will still find two new features: first, you can now drag&drop files you wish to convert into the List, and second I added
the "additional options" bar, which is a dirty workaround to allow you to use new features of k2pdfopt with the older version of the
GUI. Find the download below.
Hello. Just wanted to inform you, that I will try to fit in the changes that
k2pdfopt version 1.50 brought in due time.
I am currently very busy at work so I don't know when I'll come around to building a new version.
I will however upload a version that allows you to use the new k2pdfopt version with the GUI tonight, though without any
of the new features. This would go as pretty unsupported though, since I won't have checked, if there have been changes to
the old command line options. Additionally I can put in something like "additional options" where you can put in the command
line options for new features by hand as a workaround.
All the best
Attention: The base program, k2pdfopt, is
NOT included in the archives. Please download it from the author's website
You may also need Microsoft .NET Framework 4.
Disclaimer: This software, k2pdfopt GUI, is provided as is and free of
charge. Use at your own risk.
I do not take responsibility for any damage to your hard- and/or software caused by the
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or use the feedback system in version 188.8.131.52 and above
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