I've been having a heckuva time with this problem, and there seems to be a lot of noise out there in search engines in getting to the bottom of it, so forgive me if I've missed a silver bullet out there.
The base need is that I have to generate a PDF document that has both static and dynamic elements. I started to do this by having a PDF template with all the static content, and then I wanted to inject various dynamic elements into it. The problem is that PDFs are not meant to be manipulated that way, and depending on the size of the dynamic text I put in there, might overflow text on other pages. I was using iTextSharp but can't get past this problem.
A possible fallback is to generate a DOCX, which I've done before, and then convert it into a PDF on the backend. The only libraries I've found to do this are paid apps (like Aspose). There are examples out there that convert to PDF without these libraries, but they seem to require a client-side application. I'm doing this via IIS.
To make a long story longer...are there free libraries that will convert a DOCX file to a PDF server-side without launching client applications to do so?
There are a few choices here:
build a COM interop class that will perform read and 'Save As' functions on your .docx. The MSDN link you gave doesn't require to be run client-side, but rather have the Office assemblies in the GAC or in your ASP.NET's bin directory.
buy a third party component to do the work for you. Here's just one example with no guarantees.
I'm not familiar with any good free ones, but we used Aspose.Words to achieve something similar to what you describe. We keep Word templates with static text and mail-merge fields. The templates can be regular Word documents, they don't have to be .dot templates. Mail-merge fields can be either single fields or repeatable data in tables so you can easily generate pretty complex documents without doing dynamic document editing. (Which is always an option)
Using Aspose for this was so friction free that I would suggest using Aspose unless the cost (which is significant) is a show-stopper. The support is also good which is always an added bonus.
There are always some caveats...
I would have liked more control over the PDF compatability of the generated PDFs. We had some issues with older clients reading the generated PDFs.
Mail-merge is not fun. Complex mail-merge expressions was time consuming to get right.
I just found very simple solution to convert any files from command-line using LibreOffice:
soffice.exe --headless --convert-to pdf file.xls
(google for the rest)
Related
What are my options to embed private PowerPoint presentations on Plone site
Presentations would be behind Plone log-in
Integrate some sort of presentation viewer which can input PPT presentations
Preferably have own content type for the presentations where one could include necessary Javascript and other components needed to integrate the viewer
Presentations would be viewable directly in a browser (Flash, Javascript, IFRAME any solution accetable as long as it is cross-platform)
File converter (thru PDF?) or external service (slideshare.com) can be used, as long as data stays private
In the worst case is to have MS Office scripting which exports presentations as PNGs, but still one would need the viewer library.
I just created a product called collective.documentviewer that is able to convert these into a viewable format in plone.
http://pypi.python.org/pypi/collective.documentviewer/1.3a1
Can convert word, powerpoint, excel, maybe others. Uses the document cloud software http://www.documentcloud.org/home.
Worst case: You can "save as" many jpeg-s or png-s by selection file-save as. No scripts needed for this.
This won't be too easy, but you could use LibreOffice to convert presentations to Flash-animations and provide JavaScript-controls for those. Of course, this would require LibreOffice to be found on the server. Unoconv may provide helpful examples for how to use LibreOffice's Python-bindings.
I've not looked into this closely, but per http://blog.slideshare.net/2007/11/05/the-wait-of-over-introducing-private-sharing-of-slideshows-on-slideshare/, it does appear that slideshare.net supports private slideshows, which apparently can be embedded in a private page. So this might be a simple approach that outsources the hard parts while retaining privacy.
I am using asp.net 2.0 with c#.
I have to convert my label text into pdf. For this I have used this tutorial
http://www.codeproject.com/KB/aspnet/Creating_PDF_documents_in.aspx
now I am facing two problems:
Every time it is creating 1.pdf, what if there are so many user wants to see the the pdf format of any page
As my label text contains HTML content, it is showing a HTMl output. I don't want HTML to be display in the pdf.
please let me know if you have any other way to create a pdf.
Thanks in advance.
Creating a PDF with HTML-formatted content is not entirely trivial, and the CodeProject sample code isn't quite suitable for that. You'll most likely want to look into a (commercial) third-party solution for this: I myself use Siberix Report Writer: it's flexible, quite affordable, works in partial-trust scenarios (nice for shared web hosting environments) and most importantly doesn't require a per-server license, so you can embed it in your product without redistribution issues.
Item 1) You cache your pdf files to disk. When a request is made for a pdf check if the pdf has been created (i.e. there is a file on disk) and if not generate it. Then send the pdf using the response.writefile command
Item 2) If you are trying to print formatted html into pdf then you will need something that is capable of rendering html. There are a number of html to pdf converters however I have not found them to be all that good. If you are comfortable with php then there are some pretty good converters you can use. Joomla supports html to pdf, so whilst it may not be the exact solution it maybe a good starting point.
I would also suggest you take a look at Aspose PDF.
I would suggest using RDLC Report or Crystal Reports as suggested by #Jeroen
Cete Pdf Generator has HtmlTextArea element and supports some limited HTML
http://www.cete.com/support/net_help_library/html/ceTeDynamicPDFPageElementsHtmlTextArea.htm
ABCpdf is another commercial component which converts html to pdf.
http://www.websupergoo.com/abcpdf-5.htm
You could try the itextsharp library. I've not used it but it has been highly commended by other developers I know. http://sourceforge.net/projects/itextsharp/
In regards to the caching issue. I would check the file system for a pdf named via a convention. If the file is found then serve it. Otherwise, call another method which generates the pdf and saves it to the drive. This way only the first ever request will cause the generation of the pdf. Naming conventions will be key here. The basic implementation wont be thread safe. But it's a good start.
I use CrystalReports. It can create a PDF on the fly and output it to disk or http directly.
Simple situation. I'm trying to write my own blog with a minor twist. Part of the blog will be controlled from a client application instead of a web interface. Basically, I'm still in the design phase and haven't written a single line of code. But I'm trying to combine several techniques into an interesting exercise in software development. Thus I want a client application which I can use to write articles in, which can then upload the article through a web service to the server. (The client would be Delphi 2007/WIN32 and the service is ASP.NET/C# with SQL Server.)
The article itself would be stored in RTF format, including images. This would be in a local database on the client, which would also keep track of the article's status. Once uploaded, it will keep the article synchronised with the version on the server. Technical details are just boring and as said before, still in a design phase...
But I do need a good solution to convert the article from RTF in the database to HTML to be displayed in the blog. I have two options:
Upload both the RTF and HTML from the client, with the client doing the convertion from RTF to HTML.
Upload just the RTF and let it convert on demand on the server. (Or convert on the server when the RTF is uploaded.)
Option 1 would need a Delphi/WIN32 solution to convert it while option 2 would need a .NET solution for the conversion. I don't want an RTF editor for .NET but need a good option to use in Delphi 2007. And I need something to convert an RTF to HTML, which would keep (almost) all formatting and which would include all images from the text. This could be both in .NET or Delphi.
So, I have the following questions:
Is there a good, free RTF editor for Delphi which can handle images?
Is there a good RTF-to-HTML converter for Delphi or C# which can keep as much of it's formatting intact as possible, including images?
Some good suggestions for .Net:
Convert Rtf to HTML
Since you provided so much background about why you are doing it, I am going to provide some feedback on the whole plan. This may not be an answer to your question directly though. Sorry.
You might consider looking at Windows Liver Writer for the client. If you just implement an API it supports then it can do all the editing.
Also, I would suggest skipping RTF all together. Converting from RTF to HTML will loose some formatting, and typically create sub-optimal HTML. Creating an RTF with the sole intent of converting to HTML is a less than optimal solution.
Instead keep it HTML for the round trip. If you must use RTF, then limit the RTF formatting to the HTML formatting you want to support. That way the conversion will be more accurate. Then convert as soon as possible, providing a preview for the poster. Since it won't always convert accurately you want the poster to see any of the conversion oddities before they make them public. That way they can fix them before they are embarrassed.
You'd better take a look at TRichEditWB component in EmbeddedWeb component pack. The whole pack is open-source:
http://www.bsalsa.com/forum/forumdisplay.php?f=29
You can add image, and even controls like buttons and checkboxes to TRichEditWB. It also can hilight HTML and XML code, and recognize URLs automatically.
We have a requirement to export different pages of our I.E. only web application to Excel/pdf documents.
The pages have graphics/grids/text, etc...They should also be printable as well.
I heard weSuperGoo mentioned, but have no experience with it.
I am in the research phase now and I wonder what tools/technologies/methods are out there for this task?
I would appreciate any pointers/direction.
Thanks!
We have used ABCpdf by WebSupergoo which includes the ability to retrieve a URL and convert it to a PDF (see documentation). This means all we need to do is provide a suitably formatted version of the page in plain old HTML and point ABCpdf at this URL and it will convert everything automatically for us - beats having to build the page up manually element by element.
I should add that this isn't perfect - we have had some issues relating to matters like paging (very difficult to page HTML when you need things like headers and footers on every page) but for simple uses it's up to the job.
You can get ABCpdf free if you're prepared to link to them.
To export to Excel, you can simply just export a HTML table as HTML and name the file whatever.xls. Excel will automatically convert the HTML table to a spreadsheet. I've been using that trick for many, many years. If you're using something like a DataGrid, then that makes it even easier to just write out the contents of the control to a HTML file (or string) and then return it as a .xls file.
For PDF, I recommend iTextSharp. It's really easy to use and has worked well for me for many years. You can use the iText (Java version) documentation or the iTextSharp documentation, the methods and classes are the same (maybe capitalization is different, but you should be able to figure it out.)
Links
http://itextsharp.sourceforge.net/
Does anyone think it is possible to build a Google Docs style PDF document viewer, which will convert a document to a format that doesn't require Adobe Reader on the client machine?
If so, any references to point to? Either a place that had done it, or an explanation of how to do it.
I've done a lot of research regarding this matter and I hope I can help.
Good old Macromedia used to market Flash Paper, which was supposed to be a PDF Adobe Reader killer as it allowed any webmaster to embed and display PDF docs online using Flash. But that was before they sold out to Adobe and Flash Paper was soon put on a shelf and forgotten in favor of Adobe's priorities.
However, Today there are a so many ground-breaking alternatives...
As a user has mentioned above you can use Scribd.com (the wanna-be YouTube for documents). But they're not the only service (and certainly not the ones most ahead of the curve).
Here are my two favorites:
Issuu (http://www.issuu.com)
Mygazines (http://www.mygazines.com/)
I enjoy Mygazines's flash user interface the most (it's also faster) but it costs $99. It's pretty impressive. Depending on what you want to do that price tag can be worth it.
Issuu however, has won me over recently with their Smartlook Platform: http://issuu.com/smartlook
Here's a sample of Smartlook setup on a website:
http://www.ismartlook.com/
Plus it's completely free, which is nice.
A third alternative, which I've considered using myself is this free and open source code made by this guy named samurajdata. He calls it psview (PostScript Viewer). Anyone can download the source code and see it in action here:
http://view.samurajdata.se/
The converted PDFs losses quality as it converts to image fie, but it's fast and easy to setup.
I hope this helps!
You may try Doconut.com looks pretty same as Google Docs viewer. It is available for asp.net 4.0, apart from PDF it can also show all office formats, tiff, dwg, psd etc.. However it is a paid library.
If I understand you correctly you only want to view these files and not edit them.
Google already makes a best effort at providing PDF files found in it's search results as HTML. This doesn't always work. You can try it out by setting up a gmail account, mailing all your PDF files to it, and then using all the "View attachment as HTML" links in the messages.
Your other options are to take the source material and make it into HTML as say LaTeX2HTML does for LaTeX documents, or to convert the PDF into one of: a raster image (tiff, DjVu, etc), or a vector image (PostScript, SVG, SWF).
If the input to this process starts with the PDF files, you have very limited options, especially if the contents of the PDFs are just raster images (say scanned pages).
Personally I'd advocate for creating the PDFs from their source and trying to use Flash Paper to create an SWF out of them too as Flash Paper will pretend to be a printer. Because some 98% of browsers have Flash 9 or greater.
Have you seen Scribd?
You can just use the Google Docs Viewer which also supports PDF documents. It allows you to embed it in your web page and point to the URL where the PDF is located (which doesn't have to be on the Google servers).
Example:
http://docs.google.com/viewer?embedded=true&url=http%3A%2F%2Fwww.domain.com%2Fdocument.pdf
There is the Internet Archive BookReader available. It's a nice book viewer implemented in javascript (jQuery), so the client doesn't need a PDF reader nor Flash. Though it needs images for the book pages, you can easily connect it to your own image server, so you may try to convert a PDF to images via ASP.NET (or any other tool like XPDF). I found that this is simpler to implement than actually implementing an images viewer.
Also, it seems to support search highlighting (try it here), but I haven't investigated exactly which metadata are needed and in what format.
The last release file contains a simple example on how to use it. More details and examples can be found in the first link.
Try converting them from PDF to TIFF. Tiff supports multiple pages and is widely supported.
If formatting isn't that important, and your PDFs are structured right (ie actually contain text, not images of text), an alternate could be to convert to HTML. The tools from Aspose are pretty good.
I'm wondering why you would want to do that. PDF is such a general and widely supported format that if you try to avoid it you're limited to:
A more obscure or less well supported format (dvi, svg until it gets better support)
Converting to text/HTML like Google does with less than perfect results
Converting to an image format like TIFF which bumps up file sizes and removes all the niceties of PDF like real, selectable text and hyperlinks
If you don't want your users to have to install Adobe Reader (understandable), there are many free lightweight PDF viewers available (Foxit Reader for example), I'm sure many of these have browser embedding capabilities.
Am I missing something here? Google Docs DOES support PDF. Simply upload the PDF file.
Some other alternatives depending upon what you're looking to do:
RAD PDF - ASP.NET component for displaying PDF documents, forms, etc. Also allows PDF searching, bookmarks, text selection, and basic editing.
Atalasoft - ASP.NET component for image viewing, but also allows PDF use as an image. Doesn't support any PDF features beyond simple viewing.