How to reduce PDf File size when upload it?

santhosh kumar

10y7k.NET

Hi,

I have uploading PDF files using asp.net,vb.net. I need to reduce pdf file size with free open source.

I googled about it. likes Itextharp this is paid license... Let me know any free open source.

Thanks in advance,

Regards

san15783

7 Replies

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santhosh kumar10y ago
Hi,

Thanks, LeadTools is Paid License so Please can u provide code(C#) for Tesseract using OCR compress pdf? bcz i could not get it sample code.
Mohammed Ibrahim10y ago
ya its possible refer the below link for more information https://www.leadtools.com/help/leadtools/v19/dh/to/leadtools.topics.leadtools~l.topics.creatingacompressedpdffile.html
santhosh kumar10y ago
Hi ,

Can we compress existing pdf using OCR in LeadTools?

Thnks.
Mohammed Ibrahim10y ago
we do OCR using Tesseract its a open source
santhosh kumar10y ago
Thanks mohammed, Mainly I am looking on free open source. I googled a lot then could not get it.

Please suggest me.

thanks
santhosh kumar10y ago
Thanks, please can you give some examples for OCR and PDF to reduce size?

Thanks in advance.
Anil Mullur10y ago
It seem PDFsharp is open source and according to their website it can "Modify, merge, and split existing PDF files".
It's not clear from the site if they can reduce the size of the file but you might want to give it a try.

There’s also another way to reduce the size of the PDF. If it contains images with text, you can extract the text using OCR and save the file as searchable PDF. This produces smaller size files than images in PDF. There's a well known free OCR engine named Tesseract and it has a .NET wrapper.

If you want to handle both OCR and PDF reduction using one library, I don't know of a free tool, but my employer used LeadTools for that and it was rather good.