Change the size of the font to Large Font or Extra Large Font.

Only for latin alphabet: english, french, spanish...!!!!

Installation
Copy the folder inside the "Mods" folder.

Uninstallation
Remove this folder.

How to
1) Uncook the "fonts_en.redswf" file from "contents" folder, path: gameplay\gui_new\swf\witcher3 and unlock it. Remark: Check the option for uncook swf files too. Or download from here already uncooked.
2) Download the free software JPEXS Free Flash Decompiler.
3) Changue filename "fonts_en.redswf" to "fonts_en.red.swf" and open it with JPEXS Free Flash Decompiler.
4) There are three flavours in game (normal, italic and bold). Click on the "Embed..." button to replace the font. Select  "Uppercase, Lowercase, Puntuaction, Numerals & Basic Latin" or another as Greek, Japanese, etc, also check the box: "Update texts". Warning: Only embed uppercase letters, lowercase letters, numerals, and punctuation as a guy in the Posts section say!


5) Save the file and re-rename to "fonts_en.redswf".
6) Pack the mod.

How to pack your mod?

- Install The Official Mod Tools (v1.3): Download
- Download my mod project and the "Sarcen's Witcher 3 Mod Editor" from here: Download

Steps:

1) Open Sarcen's Witcher 3 Mod Editor (W3Edit.exe).
2) Set paths for:
    -The Witcher executable.
    -WCC_Lite.exe (The official mod tool executable, by default it was installed in C:\Program Files (x86)\Witcher 3 Mod Tools\bin\x64).
3) Open the project: 'xtra/juan.w3modproj'
4) Put your moddfied "fonts_en.redswf" file into 'xtra\juan\files\gameplay\gui_new\swf\witcher3' folder.
5) Push the button "Pack & Install Mod".
6) The created mod is in "xtra\juan\packed"