diff --git a/README.md b/README.md
index f8d6958..452af90 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,14 @@ $ python -m event_scrapper_srt --output-path output.json
 2024-07-10 21:44:22,058 - INFO - Saved 16 events to `/home/tpwo/ws/event-scrapper-srt/output.json`
 ```
 
+### Output file structure
+
+Output file is [Newline Delimited JSON](https://github.com/ndjson/ndjson-spec) format which means. Each line has the following structure:
+
+```json
+{"title": "Lindy Hop dla początkujacych | intensywne warsztaty", "description": "<p>Daj się zarazić swingowym bakcylem...<snipped>", "place_name": "Studio Swing Revolution Trójmiasto", "place_address": "Łąkowa 35/38, Gdańsk", "online_locations": ["https://swingrevolution.pl/warsztaty-lindy-hop-od-podstaw/"], "start_datetime": 1722074400, "end_datetime": 1722085200, "multidate": 1, "tags": ["swing"], "image_url": "https://swingrevolution.pl/wp-content/uploads/2022/04/351150267_646835474155254_2037209978322475013_n.jpg"}
+```
+
 ## Development
 
 ### Run unit tests and static checks
diff --git a/event_scrapper_srt/main.py b/event_scrapper_srt/main.py
index 72f0bb9..e8f3355 100644
--- a/event_scrapper_srt/main.py
+++ b/event_scrapper_srt/main.py
@@ -26,7 +26,7 @@ def main(argv: list[str] | None = None) -> int:
     parser.add_argument(
         '--output-path',
         default=f'output/{datetime.now().isoformat()}.json',
-        help='JSON with scrapped events is saved there (default: %(default)s)',
+        help='NDJSON with scrapped events is saved there (default: %(default)s)',
     )
     args = parser.parse_args(argv)