#### Dozvoljeni fajlovi:

jpg,jpeg,png,pdf,doc,xls,xsls,xlsx,csv,txt,html,htm,heic

### Primjer koda:

if ($args['file']->extension() === 'jpg' || $args['file']->extension() === 'jpeg' || $args['file']->extension() === 'png') {  
    $img = Image::make($args['file']);  
    $img->resize(1200, null, function ($constraint) {  
        $constraint->aspectRatio();  
        $constraint->upsize();  
    });  
    $img->save(storage_path('app/' . $user->oib . '/' . $args['type'] . '-' . $random . '.' . $args['file']->extension()));  
  
    return Storage::url($user->oib . '/' . $args['type'] . '-' . $random . '.' . $args['file']->extension());  
} elseif ($args['file']->extension() === 'xls' || $args['file']->extension() === 'xsls' || $args['file']->extension() === 'xlsx' || $args['file']->extension() === 'csv' || $args['file']->extension() === 'txt' || $args['file']->extension() === 'doc' || $args['file']->extension() === 'docx') {  
    Storage::putFileAs($user->oib, $args['file'], $args['type'] . '-temp-' . $random . '.' . $args['file']->extension());  
  
    shell_exec('curl -F "data=@' . storage_path('app/' . $user->oib . '/' . $args['type'] . '-temp-' . $random . '.' . $args['file']->extension()) . '" -F "FullSheetPreview=true" http://localhost:9980/lool/convert-to/pdf > ' . storage_path('app/' . $user->oib . '/' . $args['type'] . '-' . $random . '.pdf'));  
  
    Storage::delete($user->oib . '/' . $args['type'] . '-temp-' . $random . '.' . $args['file']->extension());  
  
    return Storage::url($user->oib . '/' . $args['type'] . '-' . $random . '.pdf');  
} else {  
    Storage::putFileAs($user->oib, $args['file'], $args['type'] . '-' . $random . '.' . $args['file']->extension());  
  
    return Storage::url($user->oib . '/' . $args['type'] . '-' . $random . '.' . $args['file']->extension());  
}

### Bitni dijelovi `jpg, jpeg, png`

$img->resize(1200, null, function ($constraint) {  
    $constraint->aspectRatio();  
    $constraint->upsize();  
});

Paket: https://image.intervention.io/v2

### Bitni dijelovi `xls, xlsx, xsls, csv, txt, doc, docx`

shell_exec('curl -F "data=@' . storage_path('app/' . $user->oib . '/' . $args['type'] . '-temp-' . $random . '.' . $args['file']->extension()) . '" -F "FullSheetPreview=true" http://localhost:9980/lool/convert-to/pdf > ' . storage_path('app/' . $user->oib . '/' . $args['type'] . '-' . $random . '.pdf'));

### Docker install:

sudo yum install -y yum-utils
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io docker-compose-plugin

sudo systemctl enable docker.service
sudo systemctl start docker.service
sudo systemctl enable containerd.service

None of these solutions worked for me.

My solutions is using libre office online, I found that solution here:
https://wiki.documentfoundation.org/ReleaseNotes/6.4#Full-Sheet_Previews

**This part is important:**
Available in the Online API

The new full-sheet preview feature has also been added to the Online REST API. The command below can be used to get a full-sheet preview output of a spreadsheet document in the PDF format:

`curl --insecure -F "data=@YourSpreadSheetDocument.ods" -F "FullSheetPreview=true" https://localhost:9980/lool/convert-to/pdf > out.pdf`

*Please note that using the `--insecure` option is only needed while testing the feature on a local setup, and we recommended against using it for non-testing cases.*

So this is how I converted XLS to PDF on the server.

Here is tutorial how to install LibreOffice online with docker: https://ralph.blog.imixs.com/2021/05/07/libreoffice-online-how-to-integrate/

There is one extra step with adding `extra_params` to `docker-compose.yml` so it can accept `http` requests and allow requests from machine

Here is full docker compose file

version: "3.6"
services:

  libreoffice-app:
    image: collabora/code:6.4.8.4
    container_name: libreoffice-app
    expose:
      - 9980
    ports:
      - "9980:9980"
    environment:
      - username=admin
      - password=adminadmin
      - extra_params=--o:ssl.enable=false --o:ssl.termination=true --o:net.post_allow.host[0]=.+ --o:storage.wopi.host[0]=.+
    restart: always

When you start this service you should be able to convert XLS to PDF with this command
`curl -F "data=@filename.xls" -F "FullSheetPreview=true" http://localhost:9980/lool/convert-to/pdf > out.pdf`

I have spend a lot of time searching for a solution how to convert XLS to PDF without breaking single page content into multiple pages and this is the only solution that worked for me...