Minecraft Log Checker
AlaCraft Log Checker reads Minecraft crash reports and server logs and tells you what actually went wrong — the wrong Java version, not enough memory, an unaccepted EULA, a busy port, a mod missing its dependency or damaged world data. Paste the log or drop the file, and you get a short link to share plus an explanation in your own language. Personal data is stripped automatically before anything is stored: IP addresses, your computer account name from file paths, Minecraft session tokens, API keys and passwords.
How to check a Minecraft log
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Find the log file
— After a crash the game writes crash-reports/crash-<date>-client.txt inside your .minecraft folder. A server keeps its own logs/latest.log next to the server jar. If the game is still open, the newest file is the one you want.
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Paste it here
— Drop the file onto the page or paste the text. Before saving you can press "What will be removed?" to see exactly which personal details get stripped out.
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Read the answer and share the link
— The panel at the top names the problem in plain words and tells you what to do. Send the short link to a friend, a mod author or your server support instead of pasting thousands of lines into a chat.
Frequently Asked Questions
Where do I find my Minecraft crash log?
On Windows press Win+R, type %appdata%\.minecraft and open the crash-reports folder — the newest crash-<date>-client.txt is the one from your last crash. Logs of a normal session live in the logs folder as latest.log. For a server, both sit next to the server jar in logs/. Modded launchers such as CurseForge or Modrinth keep a separate instance folder with the same structure inside.
Is my personal data safe?
Before anything is stored we strip IP addresses, email addresses, the account name that appears in file paths such as C:\Users\Name, Minecraft session tokens, API keys, bot tokens and passwords — and we show you a summary of exactly what was removed. Local addresses like 127.0.0.1 and public DNS servers are deliberately kept, because masking them would remove useful information and protect nobody.
Who can see the log I paste?
Anyone who has the link. It is not listed in search engines and cannot be found by browsing the site, but there is no password on it — think of it the way you would think of an unlisted video. If you pasted something you should not have, delete it with the button on the page.
How long is a log kept?
Ninety days after the last time it was opened, not ninety days after you created it. A link people keep using keeps working; a link nobody opens is deleted automatically. You can also delete your own log at any moment from the page where you created it.
What problems can it detect?
The most common reasons a game or server refuses to start: a Java version that is too old for your Minecraft version, running out of memory, an unaccepted EULA, a port already used by another program, a mod whose dependency is missing, and damaged world data. When nothing is recognised you still get the log with error lines highlighted, ready to share.
Do you have an API?
Yes, and it needs no key for reading. POST /api/v1/logs stores a log, GET /api/v1/logs/{id}/insights returns the findings as JSON, and adding ?format=markdown returns a short report meant for an AI assistant. Hosting panels, Discord bots and AI agents can all use it — the current limits are published at /api/v1/logs/limits.
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