Hello. I am a Korean office worker who was introduced to PCB.
I received a PCB sample through PCB out_sourcing.
As a result, I received a Gerber file, a schematic PDF file, and an Artwork PDF file.
There is a part that I want to modify, so I want to modify the Gerber file along with the schematic modification.
Are these features in Easyeda?
If not, it would be appreciated if you let me know how to fix it in other ways.
Thank you.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
Hi
Welcome to EasyEDA.
EasyEDA does not currently support the direct editing of Gerber files.
This thread on the EEVblog has a few suggestions for free trial and paid for software options:
https://www.eevblog.com/forum/eda/gerber-editor/