I am trying to reduce the size of a crystal report , where in I have converted the image from PDF to BMP and then inserted as an OLE object in to the crystal report. In doing so , The color (Black and white) was still rich and the words in the image are clear.
Using CR 2008
However, The crystal report size is increased to more than 8 megs , which is a lot for the report with a single page.
I have searched online on how to reduce the size of the CR , I have found one answer where , Use photoediting tools , the image to GreyScale and add as OLE object , however in doing so , the image resolution has gradually decreased.
I am still looking for a solution where I can decrease the size of the CR to less than 3 megs with out compromising the image quality in the report.
P.S: My first question on StackOverflow. :)
Do not convert to another format because Crystal manages the image internally as bitmap.
Reduce color depth. For example, convert from full color to grayscale.
Load the rpt in Crystal and go to
File, Report Options...
And turn on the checkbox for 'Retain Original Color Depth'.
If you need to resize the image, do so outside Crystal. Resizing an image inside Crystal can cause it to consume more memory.
I only stumbled across this question as you had Reporting Services tagged (I've now removed that tag from your question). I'm no Crystal Reports person but I suspect most of the file size is in the BMP. BMPs are uncompressed so they are big, especially compare to other file formats.
You should be able to convert to a PNG or JPEG with low compression and this will reduce the size of the image considerably. Play around with different compression levels when saving to see what works best but I would start at about 90%.
If you need a free (Windows) tool where you can set the compression when saving an image, try paint.net ( https://www.getpaint.net/ ) It's completely free, open source and simple.
Related
I'm trying to create a small PDF file, embedding one optimized PNG image displayed as a header and footer on a 3 page PDF (same image must appear 6x in the PDF)
My optimized PNG image is only 2.3KB. It looks very sharp.
Failed with libreoffice
When I insert just one instance of the 2.3KB PNG image into a Libreoffice Writer doc containing only text, then export as PDF I can see that the image gets re-compressed to JPG and the resulting PDF file grows by about 40KB after adding the image. It also loses quality, the PNG also gets JPG fuzzy edges.
If I right click the image and select compression, there is no way to disable recompressing the image (it's already optimized better than libreoffice could do it) I've tried setting a compression level of 0,1,9 etc. Choosing JPG, no resize, lossless, etc but there was no improvement.
Failed with wkhtmltopdf
I also tried making a test page and used wkhtml2pdf but it did the same thing. Adding the low quality flag made no difference.
PDF Spec suggests PNG is supported?
From skimming the PDF spec, it looks like PNG images are supported.
Even plain text PDF files are surprisingly large
The disappointing thing is also when I take a 7KB HTML file which is basically just <html><body><p>foo...</p><p>bar...</p> (only about 15 paragraphs) with no CSS. The resulting 2 page PDF file is 30KB. Why should a 7kb (almost plain text) file become 30kb as a PDF?
Suggestions?
Can someone please suggest how to make a small PDF file in Linux?
I need to include 7KB of text and repeat one PNG image 6 times.
Manually or programatically. I'll take whatever I can get at this point.
PDF Spec suggests PNG is supported?
PNG isn't supported per se; PDF allows embedding JPEG images as-is, but not PNG images. PDF does borrow a set of features of the PNG format, however.
rinohtype (full disclosure: I'm the author) tries to embed as much as possible from PNG images as-is into the PDF. This does involve some bit-juggling to separate the alpha channel from the color data for example, but no reencoding of the image is performed. It does not (yet) support interlaced PNGs.
rinohtype should be able to do what you want to achieve. But please note that it currently is in a beta stage, so you might encounter some bugs.
Even plain text PDF files are surprisingly large
To keep the PDF size as small as possible, make sure not to embed/subset any of the fonts. Use only the fonts from the base 14 PDF fonts which are provided by PDF readers.
What you want is certainly achievable. Regarding the image quality, I would recommend making your image twice the size that you want it to actually display at in the PDF to keep it looking sharp.
As to the size, I've just modified a test in my PDF writer module (WIP..) to include a 7.2K png, 200px x 70px, in a PDF twice and the PDF came out at 6.8K 8). There's not much text included, but more text will only add what it's worth + a small percentage.
You can see the module and original test here.. https://github.com/DoccaPDF/docca-pdf-writer/blob/master/src/tests/writer.js#L40
That test adds ~112K of images to the PDF and results in a 103K PDF.
Of course not all images are created equal so you milage may vary..
*the images are only actually added to the PDF once, but are displayed multiple time.
Can we reduce the quality of PDF rendered using PDFsharp?
I have to render files containing thousands of pages. Due to this, the resulting files sometimes occupy more than 100 MB memory space which is inconvenient.
A PDF is rendered from an Excel sheet. There are no images or charts. Only the number of rows in the Excel is very high. Can anyone please help?
Thanks in advance
With the current version of PDFsharp it is up to you to reduce the resolution of images or the JPEG quality to optimize the file size.
.NET provides functions that can accomplish that.
We are using Crystal report XI, have to show image on the report, right now we are able to show the images. here my problem is we are cropping the image with a fixed width and height then converting the image into binary array (one way to display images on report) in this way images are blurred. Reason to do like this is we may have big size images also for that we are cropping images. Is there any way to display images with fixed size in the report.
Note: We may have small and big images also finally we need to display with a constant size on report.
Regards,
Chakradhar.
Why don't yo store the pictures as binary in the database and save yourself the conversion when inserting them into the report? You would need a BLOB column in your database in order to be able to insert the pictures into your database. Alternatively you could insert the images as OLE objects instead of pictures and also decreasing the color depth and using the bitmap format (.bmp) will help you keep the file size down.
I have an Autocad drawing which is a plan for land squares where each square contains a number.
I tried to convert it to image by choosing: File --> Export Data --> and file format Bitmap (bmp). (I have Autocad 2013 Mac version)
the file converted to image, but the quality is too bad, I can't see the land numbers inside the square when I zoom in the image.
I tried also with Postscript (PS file format), quality is a bit better but it's still bad.
Is there away to convert Autocad file to image but still preserve it's high quality details
I need to convert the file to image because I would like to publish it online on my website. maybe there other was to publish autocad file on line, if so, please advice. But the trick I want the background of the autcad (plan) to be transparent so that I could display it on top of Google maps. I if I used autocad plugin I can't make it transparent. right?
Use the PLOT (for the current drawing) or PUBLISH (for batching) commands to produce high quality images.
I have a report that renders images (jpg) that have been collected from various sources. This works fine within the report viewer, and when exporting via Excel.
However, when exporting to PDF, about 5% of the images are rendered incorrectly as can be seen below, with the original on the left, and what is rendered on the right;
I find that if I open up one of these images in mspaint, and just click save, on the next report-run the image is now rendered correctly.
Are there any rules as to what image properties/format are valid for SSRS to render the image correctly within a PDF? Essentially I'd like to somehow find these images that will render incorrectly before the report is run and fix them prior...
Current Workaround
I never ended up getting SSRS to display the the problem images as they were, however, determining before running the report which images would be included in the non-displayable set so they could be converted to a supported format (automatically) was also a solution.
In my case, all images were supplied via users uploading to a website, so I was able to identify and convert images as they arrived. For all existing images, I was able to run a script that identified the problem images and convert them.
Identifying problem images
From the thousands of images I had, I was able to determine that the images that wouldn't render correctly had the following properties:
Image had CMYK colorspace or;
Image had extended color profiles or;
Both of the above
Converting an image
I was originally using the standard .NET GDI (System.Drawing) to manipulate images however the API is often prone to crashes (OutOfMemoryException) when dealing with images that have extra data. As such, I switched to using ImageMagick where for each of the identified images I:
Stripped the color profiles and;
Converted to RGB
Note that the conversion to RGB from CMYK without stripping the color profiles was not enough to get all images to render properly.
I ended up just doing those items on every image byte stream I received from users (without first identifying the problem) before saving an uploaded image to disk. After which, I never had the rendering problem again.
Because of the way the output looks I would say those JPEG images have CMYK colorspace but the SSRS assumes they use RGB colorspace and sets the wrong colorspace in PDF.
If you can post a JPEG image and a sample PDF I can give you more details.
I've had exactly the same problem with an image rendering correctly on screen but appearing like the one in the question when I exported the report to PDF. Here's how I solved it.
The Problem
The first clue was this article I came across on MSDN. It seems that regardless of the original image density, the PDF renderer in SSRS resizes all images to 96 DPI. If the original size of the image is larger than the size of the page (or container), then you will get this problem.
The Solution
The solution is to resize the source image such that it will fit on your page. The requires a little calculation depending on your page size and margin settings.
In my case, I'm using A4 paper size, which is 21cm by 29.7cm. However, my left margin is 1.5cm, and my right margin is 0.5cm, for a total inner width of 19cm. I allow an extra 0.5 cm as a margin of error, so I use an inner width of 18.5cm.
21 cm - 1.5 cm - 0.5 cm - 0.5 cm = 18.5 cm
As noted before, the resolution generated by the PDF renderer is 96 DPI (dots per inch). For those of us not in the United States or Republic of Liberia, that's 37.79 DPC (dots per centimetre). So, to get our width:
18.5 cm * 37.79 dpc = 699 pixels
Your result may be different depending on (1) the paper size you are using, and (2) the left and right margins.
As the page is higher than it is wide, we need only resize the width while keeping the image proportional. If you're using a paper size which is wider than it is tall, you'd use the length instead.
So now open the source image in Paint (or your image editor of choice), and proportionally resize the image to the desired width (or length) in pixels, save it, import it into your container, and size the image visually with respect to the container. It should look the same on screen, and now render correctly to PDF.
This is an issue reported to Microsoft Connect.
From SSRS 2008 How to get the best image quality possible?:
The image behavior you see in PDF is a result of some image conversions that the PDF renderer does, based on how the PDF specification requires that serialize images into PDF.
We know it's not ideal, and we classify the loss of image quality as a product issue. Therefore, it's difficult to really say what to do to get the best quality image.
Anecdotally, I have heard that customers have good results when the original image is a BMP