Hi @okan.sozeri if the extract from PDF crashes, means it is going out of memory, which is common as it needs more memory to compute that operation, increasing your n8n instance configuration would really be a good move! But on self hosted you can do change this variable:
N8N_DEFAULT_BINARY_DATA_MODE=filesystem
so that n8n actually writes everything on DISK instead of filling the ram, although for workflow improvements i would say if you are parsing more than 1 pdf consider not doing that, let me know if this helps