Steam IDs from Counter-Strike DEMO files
To obtain the most accurate information about SteamIDs, at least one full round must be recorded in the demo file - specifically, the end of one round and the beginning of the next
A Counter-Strike demo isn’t a simple video - it’s a compact recording of client–server communication: packets, entity updates, string tables, and in-game events. Inside this data are hidden valuable clues - SteamIDs, player nicknames, and service metadata. In classic Counter-Strike 1.6, extracting this info was common practice; CS:GO and Counter-Strike 2 compress it more tightly, but the logic hasn’t changed: if it happened in the match, it’s in the demo file.
How the SteamID Extractor Tool Works
The tool scans .dem files and extracts SteamID64 together with the player’s nickname using a targeted search algorithm. Instead of reading the entire file blindly, it focuses on the specific data block where the game actually stores player SteamIDs.
- Detects the SteamID marker in the demo file by matching unique hex signatures.
- Reads the four bytes that contain the account’s unique ID and converts them into SteamID64 format.
- Captures the nickname that appears directly before the SteamID in the data stream.
- Filters out duplicates so only unique players are listed in the final output.
How to Use the SteamID Extractor Tool
Upload your Counter-Strike .dem file and click the Extract SteamID64 button. The tool will scan the relevant section and return: Player nickname and his SteamID64.
Use the results to:
- Add players to friends
- Verify identities
- Investigate suspicious players or report cheaters
Tip: For extended info - profile avatar, inventory, friends list - use my SteamIDs Lookup tool.
Why Use the SteamID Extractor Tool
SteamIDs are the unique, permanent identifiers for every Steam account. In CS2, knowing someone’s SteamID lets you check their public profile, see VAC bans, review inventories, or report misconduct with proof. Demo files keep this data even if the player later changes their nickname or changes privacy settings.
If you’re already extracting Steam IDs from demos, great! To understand what those IDs mean and how to convert them, read my guide Steam ID: The Complete Guide to Steam Identifiers. And for fast, hassle-free conversions between formats, try my SteamIDs Lookup (converter).
F.A.Q.
Can you extract SteamIDs from CS:GO demos?
Yes. The tool works with CS:GO .dem files as well as CS2, because both use the Source demo format with similar data structures.
Can you extract SteamIDs from CS 1.6 demos?
No. CS 1.6 uses the GoldSrc demo format, which stores data differently and isn’t supported by this parser. Also, it is not required because the SteamID is present and is not hided in the CS 1.6 demo files.
What if the demo is corrupted?
If the demo is partially damaged, the tool may still recover some IDs from readable sections. If key structures are broken, the result may be incomplete or empty.
Do I need VAC-secure demos?
No. SteamIDs are stored in all demos, whether VAC-secure or not, as long as the recording contains player connection data.
Will the tool detect players who left before the end of the match?
Yes. If the player connected and played during the recorded part of the demo, their SteamID should appear in the data block.
What is the minimum length of demo for extraction?
Ideally, at least one full round should be recorded - the end of one and the start of the next - to capture all connection events.
Can SteamIDs be hidden or removed from demos?
No. SteamIDs are part of the demo’s network data. If the player participated, their ID is embedded in the file.
Can I get profile information directly from this tool?
The parser returns only SteamID64 and nickname. For full profile details (avatar, bans, inventory), use a SteamID lookup service.
Is it possible to find multiple IDs for the same player?
Yes, but the tool removes duplicates. Only the first occurrence is shown in the results.
