A question about the PDF library used by ONLYOFFICE PDF Editor

Desktop editors
1

I would like to ask a question about the PDF library used by ONLYOFFICE.

Just now, I found a WASM file in the source directory of ONLYOFFICE/sdkjs repository: pdf/src/engine/drawingfile.wasm, but I didn’t find any information about the PDF parsing library and rendering engine used by ONLYOFFICE PDF Editor in your documentation. So I want to know which PDF library ONLYOFFICE PDF Editor uses.

3

Hello @micro201014
Indeed, the drawingfile.wasm file is related to our rendering engine, it’s self-written.
Could you please clarify what information you need regarding this file?

4

Since you wrote these WASM files yourself, why don’t you make the source code of these WASM files publicly available?

5

All source code is publicly available. The drawingfile.wasm file is compiled from this repository: GitHub - ONLYOFFICE/core: Server core components which are a part of ONLYOFFICE Document Server

7

Sorry. I didn’t study it carefully.

In addition, I found 4 more WASM files in the ONLYOFFICE/sdkjs repository:

  1. common/hash/hash/engine.wasm (core/DesktopEditor/xmlsec/src/wasm/hash/*)
  2. common/zlib/engine/zlib.wasm (core/OfficeUtils/src/zlib-1.2.11/*)
  3. common/spell/spell/spell.wasm (core/Common/3dParty/hunspell/*)
  4. common/libfont/engine/fonts.wasm (core/DesktopEditor/fontengine/*)

And the source directory of pdf/src/engine/drawingfile.wasm should be core/PdfFile/* .

Are the above conclusions correct?