A growing share of code is written by AI. Decoder helps you read it.
Open-source AI code analysis (MIT). Drop a single file, a ZIP or a public Git URL. Static & malware checks run free in 20+ languages — add your own key (BYOK) or run local for AI explanations, repo chat and persistent history.
What you can drop in
Single file, ZIP archive, or Git URL
No setup required. Decoder accepts any of the three input modes below — pick what fits the moment.
- 01
Single file
Drop one code file. Decoder opens it right away, even if you don't know what's inside.
- 02
ZIP archive
Upload a zipped folder. The project structure is preserved.
- 03
Git repository URL
Paste a link to a public GitHub or GitLab project. No login required.
Uploading is always free for all three inputs. Static and malware scans run without any key. The AI features (explanations, AI-origin, code chat) need your own provider key (BYOK) or a local model.
What Decoder does
Four lenses on your code
Tap any card for details. No key needed for static and malware; AI features use your BYOK key or a local model.
MIT · BYOK · Local-friendly. Decoder is released under the MIT license. Code, analysis prompts and rules live in the repository, readable and editable.
FAQ
Frequently asked questions
Go deeper
Docs, manifesto and contributors
The homepage stays light on purpose. Everything else lives one click away.