I have folders that contains many jpg files.I want them to convert into PDF files.
Every folder should made into a separate PDF.
Please help I am new to python.
And if possible can I do it in one shot.
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The best method to convert multiple images to PDF so far is to use PIL purely
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I have a pdf document containing several images. I want to retrieve the names of these images.
I know that ExtractImages extracts images from PDF. I feel that this will somewhere have the functionality to fetch the name of the image.
How to achieve this using python
I need to find a tool (python, adobe suite, some cmd line utility, etc) that can extract images from a PDF as individual PDF files - not jpegs, pngs, etc.
Does such a thing exist? Seems like there is a bunch of stuff out there for extracting image files to png, jpeg, etc, but nothing for extracting the images as PDFs. A strange request I know.
I am working with a large set of PDFs that contain images that are comprised of all kinds of different images formats, bitmaps, vectors, etc. If there was some way to programmatically pull out images as pdfs it would save me a lot of time.
Right now I am selecting a portion of the page in the PDF in acrobat pro, choosing to edit in illustrator, and then saving as PDF.
Very time consuming.
Any ideas?
You could use poppler's pdfimages utility to extract all bitmap images as-is from a PDF. In a second step, you can convert these bitmaps back to PDFs. img2pdf seems like a good candidate for this.
Hopefully this question wont be asking for too much and can be understandable, but any help would be amazing. Currently I am doing [astronomy] research, and I am required to construct a webpage of quasar spectra to look like this...Sample of final product
This is to be done so by downloading each individual spectra from this source here...https://data.sdss.org/sas/dr13/eboss/spectro/redux/images/v5_9_0/v5_9_0/3590-55201/.
The problem is, I am struggling to find a way to download large quantities of png files all at once. For some reason, all the spectra on this link do not have their coordinates (Right ascension and declination) on the file name. Whereas the code provided to me as an example does.
In the situation that I have the png "00:14:53.206-09:12:17.70-4536-55857-0770.png" downloaded, it should be displayed. However as mentioned before, all the files I have viewed when trying to do this myself, do not list those. My page looks like direct code, no actual images. But it remains in code because it cannot pull forward those spectra since they are not downloaded, and I would prefer to have them assorted by their coordinates.
Downloading a FITS file which contains the quasar catalog was suggested to me. Presumably, the coords would in some way have to be appended to the png files downloaded. Apparently this is all supposed to be easy.
In summary: How do I download large quantities of png files, where they do not display their coordinates. I also need a method of renaming the image files to so that their file names correspond with the coordinates, and then print to a webpage.
When displaying images on a website (regardless of where you sourced the images from, or the format - jpg/png etc), it is advisable that you COMPRESS your images. This is especially valid in cases where the images are big, and where there are a number of images on the page (pages like yours!). There are a few online image compressors like tinypng (where you can upload ~30 images at at time to compress, and it compresses both jpg and pngs) or pngcrush.
Compressing images this way will reduce the file size (greatly in some cases) but the image appears the same. This will very much improve the load time on your site.
When you download a file (any file, not just an image file, you can save it as anything you want (name-wise) so you can rename the files on download. You will need to upload all the [preferably compressed] images to a web server in order to display them on a webpage. If you don't know ANY webscripting, start with learning basic html (you won't need a lot for this project), but the best way to display the images would probably be to use a loop to loop through the image folder using either javascript or php
I am experimenting with packaging of data, and since most of my data is stored as image/graphs and other similar data; I was planning to find a more efficient way to store these images.
I did read about saving them in a DB as blob; and some others are more inclined to save them in the file system; but what I would like is to have the images to not be visible outside the application. This is essential because when I run analysis on instruments; I am not interested in showing users all the images, but only the ones related to their particular instrument.
Plus it is convenient to pack data in one single file, compared to a folder with 20-30 images in it.
I was thinking to store the images in a custom structure, a sort of a bin file, using python; unless there is something that already cover that functionality. In my search I didn't notice any specific struct to save images, while the most common solutions were either a folder in the file system or the DB approach.
If you can convert your images to raster arrays, you can store them in an HDF5 file: Add raster image to HDF5 file using h5py
I've created multiple charts using Matplotlib and saved them as PDF's. I need to combine up to 5 PDF's into one PDF, as this will be done many times the task needs to automated with Python. The reason I'm combining PDF's instead of .jpg or .png is that the PDF scales the best and doesn't result in a fuzzy image. I've tried using code from here Is there a matplotlib flowable for ReportLab? but I don't understand how to control the image placement. Reportlab has a function:
.drawImage(file, x-coord, y-coord) which allows for specific placement of the image on the page, unfortunately this function only takes .jpg or .png which are too low quality. If anyone has any suggestions on how to combine PDF's it would be greatly appreciated!
If anyone stumbles upon this I've found that the best way to actually do this is in Latex. There is a python plugin called PyLatex but there is no documentation so instead I will create a Latex template then using subprocess.call in my Python script create the Infographic.