Add support for processing PDF without system installs/binaries

[jakeleventhal]

Feature request

What are you trying to achieve?

I want to be able to input a PDF as a Buffer and resize it/save it to a DPF

When you searched for similar feature requests, what did you find that might be related?

There are no open issues like this

What would you expect the API to look like?

Same as all the other APIs

What alternatives have you considered?

Other libraries. They are slow

Please provide sample image(s) that help explain this feature

N/A

[jakeleventhal]

await sharp(pdfBuffer, { page: 1, pages: 1 })
              .jpeg({
                quality: this.compressedImageQuality
              })
              .resize(this.compressedImageSize, this.compressedImageSize)
              .toBuffer();

[Error: Input file contains unsupported image format]

Same issue with a path to the PDF file

[lovell]

sharp can read PDF files when using a globally-installed libvips compiled with support for either poppler or pdfium.

https://sharp.pixelplumbing.com/install#custom-libvips https://github.com/libvips/libvips/#optional-dependencies