I am trying to html to pdf on mac osx. I write this command,
$ wkhtmltopdf --header-center "google" http://www.google.com google.pdf
but I saw the error,
The switch --header-center, is not support using unpatched qt, and will be ignored.Loading page (1/2)
Printing pages (2/2)
Done
What is the problem? How should I fix?
Install Qt from https://code.google.com/p/wkhtmltopdf/wiki/compilation yourself. Hopefully this will do.
Related
I have followed these steps while installing the gnome extension of chromium in Ubuntu 20.04.
Installed the GNOME Shell integration extension on chromium.
As per their documentation ran a command to install chrome-gnome-shell
sudo apt-get install chrome-gnome-shell
Still while loading the gnome-extensions page, it is showing error that "Although GNOME Shell integration extension is running, native host connector is not detected. Refer documentation for instructions about installing connector."
Can anyone tell me how to resolve this issue in steps?
FYI: starting from Ubuntu 21.10 Firefox comes as a default browser and as a snap, as well as Chromium. And has the same problem: GNOME Shell integration shows the same error.
Other ways to install the extensions are:
gnome-extensions install --force your_downloaded_extension.zip
unzip your_downloaded_extension.zip ~/.local/share/gnome-shell/extensions/
Probably this is because you are running Chromium as a Snap. There is an open bug in Launchpad about this, that appears to still be happening in Ubuntu 20.04 (still happening in Ubuntu 22.04):
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1741074
The easiest solution would probably be to use another web browser, not in a Snap.
I experienced this issue when upgrading from Ubuntu 21.04 to Ubuntu 22.04 (Jammy Jellyfish), where Firefox was installed via snap - supposedly the sandboxing made it unable to detect.
My resolution (which brought back gnome extensions connector being seen) was to install firefox manually by debian package via the directions in https://balintreczey.hu/blog/firefox-on-ubuntu-22-04-from-deb-not-from-snap/ . You may also be able to install the direct tarball following directions in https://fostips.com/install-latest-firefox-non-esr-debian/
Another option is to use a native extension manager as suggested in https://haydenjames.io/ubuntu-22-04-install-gnome-extensions-manager-workaround/
I solved using Chrome and not more Firefox for extensions.gnome.
(I use Chrome just for manage this extension)
If you still got problems, you could simply do this:
sudo apt-get reinstall chrome-gnome-shell
For me it did work after all, but just by using another browser - Firefox
I'm using Ubuntu 20.10 and I also had this issue. I was using Chromium but I found that Chromium dropped support for this, therefore I installed Firefox from the software. This did not work either.
The fix was to uninstall Firefox from software and install Firefox from ubuntu software with the source: ubuntu-groovy-updates-main
I installed the browser extension on there and it worked perfectly.
Aevin J He gave the answer if you're on ubuntu 21.10. it really matters whom you install it from. don't use the default one, use the one with most reviews
I have MikTex and LYX installed on Win XP running in Virtualbox on Debian 8. MikTex on its own works fine, LYX as well. However, when I want to open dokument preview in LYX, it does not call MikTex and returns a "missing PDF file" error instead. LYX is supposed to use MikTex for generating PDF output; is there perhaps a possibility to configure LYX to link with MikTex?
I've had similar problems in the past. Uninstalling both, LyX and MikTeX, and reinstalling the LyX-Bundle installer (not the simple one without MikTeX) got me bot running and working together.
I'm using Tess4J (JNA wrapper around tesseract), and trying to call tess.doOCR(myFile) to OCR text from a single-page PDF.
I have GhostScript installed (by using yum install ghostscript), gs -h works correctly.
My app server is using 64-bit JVM, and I have gsdll64.dll, and the 64-bit tesseract dll's liblept168.dll and libtesseract302.dll in the class path.
When tess.doOCR(myFile) is called, this is logged:
GPL Ghostscript 8.70 (2014-09-22)
Copyright (C) 2014 Artifex Software, Inc. All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
Processing pages 1 through 1.
Page 1
But then it just stops there. The program doesn't go any further.
UPDATE --
It looks like the real issue is from this error:
java.lang.UnsatisfiedLinkError: Unable to load library 'tesseract': Native library (linux-x86-64/libtesseract.so) not found in resource path
After looking around a lot, I don't see a convenient place to find this libtesseract.so file, and I'm not sure what it takes to get this onto my Linux app server. I read that maybe I need to download some C++ runtime, but I don't see a Linux download for that. Any advice would be much appreciated.
Or is this something to do with a symbolic link?
The Fix was simple for me,just do sudo apt-get install tesseract-ocr from the command line. For linux you dont need to worry about the DDL librarires or the jvm version. Installing tessearct from apt-get will do the trick.
Those DLLs are for Windows. For Linux, you'll need to install or build from Tesseract source.
That GS version, 8.70, is quite old. The latest Ghost4J library that Tess4J uses is not compatible with that.
Tess4J should include required libraries. However, you need to extract them first.
This should do the trick:
File tmpFolder = LoadLibs.extractTessResources("win32-x86-64"); // replace platform
System.setProperty("java.library.path", tmpFolder.getPath());
You should replace the argument of extractTessResources(..) with your platform. You can find possible options by looking into the Tess4J jar file.
This way you need not to install Tesseract on your system.
Recently I wrote a blog post about Tess4J in which I used this technique. Maybe it can help if you need further information or a running example project.
sudo apt-get update
sudo apt-get install tesseract-ocr
download test data by git
https://github.com/tesseract-ocr/tessdata
I've found some tools that can convert PDF to SWF, but I'm hoping to find something or even a library to be able to be able to incorporate this on the server to be able to store the SWF in a database.
Have you tried SWFTOOLS? On Debian/Unbuntu:
sudo apt-get install swftools
pdf2swf filename.pdf
http://wiki.swftools.org/index.php/Examples#pdf2swf
They have a Windows version, and the source so you can compile it on other Linux flavors.
I would like to programatically convert SVG files to PDF files. However, the SVG files contain text that must be searchable in the generated PDF files. Also, it has to work on Red Hat Enterprise Linux 5.3 or CentOS 5.3 for the x86_64 architecture. It would be nice if it were Open Source or at least not very expensive.
Here is what I've tried. All of these, except Batik, work fine on Debian Lenny.
Inkscape
I can get it installed using autopackages from http://inkscape.modevia.com/ap, but when I use it from the command line, the text is not searchable.
Batik rasterizer [sic]
When it converts SVG files to PDF files, the text is no longer searchable.
svg2pdf
The source for this and several of its dependencies are available to download. I have been trying to get it to compile on CentOS, but haven't had success yet. I found a precompiled version for Debian x86_64, but it doesn't work on CentOS.
rsvg-convert
Generated PDF isn't searchable on CentOS 5.3. Perhaps installing a newer version of cairo would help. Thanks to DaveParillo for mentioning rsvg-convert (on superuser).
SOLUTION (but perhaps some of the above will still be useful to the reader)
princeXML
It works fine on CentOS when installed from source. For some reason it doesn't work when installed from the .rpm. Thanks Erik Dahlström!
Cross posted on superuser
You could try princexml, it's free for non-commercial use.