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ONLYOFFICE / DesktopEditors

An office suite that combines text, spreadsheet and presentation editors allowing to create, view and edit local documents
https://www.onlyoffice.com
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[Feature] Image compression quality option in PDF export #132

Open dreamofi opened 6 years ago

dreamofi commented 6 years ago

Do you want to request a feature or report a bug? Feature

What is the current behavior? The export to PDF function does not have any option to fine tune the quality of images to be embedded in the exported PDF file.

What is the expected behavior? A dialogue with options to fine tune the images quality (e.g. lossless compression, lossy compression, quality level, color or BW mode etc.)

Which versions of DesktopEditors, and which OS are affected by this issue? Did this work in previous versions of DesktopEditors? All versions of DesktopEditors and all OS are affected

Rita-Bubnova commented 5 years ago

Hello, @dreamofi. Thank you for your enhancement. I created a new issue 40105 in our private issue tracker.

vatterspun commented 5 years ago

For reference, the default ONLYOFFICE PDF settings are: PDF Version: 1.7 - important as some older viewers can't view this format. Metadata: lists Ascensio as the PDF producer, ONLYOFFICE as the CreatorTool and has a create/modify date

I couldn't figure out the default DPI but I'm guessing it was 300 based on a single page PDF being 186k. That's probably what I'd pick, but lots of document types can be less than this and save space as @dreamofi is suggesting with this feature.

cpot commented 4 years ago

We have been doing tests to understand how Onlyoffice 5.4.x can generate a 4MB PDF file while the DOCX is 950KB and LibreOffice 6.3 export the same PDF :

It is a mystery for us ... We will still try to understand, but this is an important issue

PS: it affects also Document Server

ElisabettaValgoi commented 3 years ago

Is there any news about a picture compression option?

I need to save a PDF file from a Word document where I have inserted some screenshots. The screenshots look completely fine in Word in https://www.onlyoffice.com/de/ but when I download the document as PDF they look absolutely horrible.

I haven't found a way to deactivate picture compression. Could you help me out?

Rita-Bubnova commented 3 years ago

Is there any news about a picture compression option?

Sorry, currently there is no news.

stackshadow commented 3 years ago

Looks like it can be changed here: https://github.com/ONLYOFFICE/core/blob/master/PdfWriter/PdfRenderer.cpp#L1645

SemaphoreOxalis commented 2 months ago

Any news on that because we have some very big PDF export because our client don't know how to redim img before inserting them. Thanks