pdfinfo | Simple PHP wrapper to the pdfinfo unix tool

I Am trying to download a pdf form API response. API-1 will return the file name, with the filename as input to the API - 2, I will download the pdf. It works well for positive cases. If incase there is no fileName returned from API - 1, I should not call the API-2, instead I have to tell the user no File exists in a popupDialog.

After researching to see how I can make PHP know the orientation of the pdf, and found a solution with pdfinfo, it works fine by bash. but I can't get that by PHP with executing exec command, I receive the response under the string to be able to create an if rule. I do not understand why the if of the PHP does not work with the answer of the ssh.

Thanks greetings

I'm creating a canvas with an overlay div to add markers on click and I want markers to change position when I pan zoom the canvas or resize the window. I'm using https://github.com/timmywil/panzoom to pan zoom.

The problem is when I convert mouse position to canvas coordinates it worked correctly but when I convert it back to screen position to render markers on overlay div, the result is not as same as initialized mouse position and recalculate marker's position on resize also not correct.

This canvas is fullscreen with no scroll.

I tried convert PDF to JPEG on Google Cloud Functions. I used the Python module pdf2image. But I have no idea how to solve the errors No such file or directory: 'pdfinfo' and "Unable to get page count. Is poppler installed and in PATH? on the cloud function.

The error code is very similar to this question. pdf2image is a wrapper around "pdftoppm" and "pdftocairo" of poppler. But how can I install the poppler package on google cloud function, and add it to PATH? I can't find relevant references for it. It is even possible? If not, what could be done?

There is also this question, but it isn't useful.

The code look something like the following. Entry point is process_image.

there is pdfinfo for PDFs, exifinfo for images, ffprobe for multimedia and so on. are the a collection or a standardized toolset for extracting filetype dependent(like pdf, image, doc, odt) metadata of all files in linux?

or even distinct tool that are file-format specific for most common file types like ppt, epub and other file types we commonly find in internet downloads.

We have added pdfRevocationInfoArchival OID (1.2.840.113583.1.1.8) as a signed attribute while generating signature. While building this attribute we used external CRL file (ca-crl.crl) and builds the OID 1.2.840.113583.1.1.8 as ASN1 object. After signing pdf and timestamping signature, everything works fine. But we are not able to understand the identifier (adbe-revocationInfoArchival) which added is in the PDF is correct and which can be used to verify this PDF by fetching this OID. Also we are not able to check that this attribute is in proper format in which PDF can verify it. Is there any tool or utility available to check this attribute which is inserted as a signed attribute is valid.

If any PDF tool/utility is available to visualize attribute are available in PDF please share.

We have build the issuers CRL info at position [0] is this correct to way add the CRL in this OID? I have share the code below code snippet

The following object identifier identifies Adobe's revocation information attribute:

I was working on my project and what I need is to implement a way to send multiple files through react-native-share or with any other module

I have a Node JS Heroku service which read an email message and returns a base64 string to build a pdf. This is working properly for Outlook Unicode msg files but when the msg file format is not unicode, it prints something like this:

And this is an example of the same email message, exported like Unicode MSG file:

This are some blocks of code:

In the Ghostscript documentation I did not found arguments to query the paper sizes of a PDF document.

I read about a pdf_info.ps file in the lib subdirectory.

I tried this code: