AI Tools
Drop a Claude Code or Codex session, or paste OpenAI, Anthropic, or Gemini messages. Read it as a conversation, with each tool call next to its result.
Paste JSON or JSON Lines, or drop a file here. Large files (up to 200 MB) are read without loading them into the editor.
Add a transcript to view it.
Drop a session file, open one, or paste JSON. The format is detected for you.
Hide thinking or tool output, search for a word, and open any long result in full.
Copy the conversation as Markdown for a bug report, pull request, or notes.
~/.claude/projects/.~/.codex/sessions/.contents requests and responses.Session formats aren't officially documented and can change. If lines can't be read, the summary says how many were skipped.
No. The file is read and shown in your browser, and nothing is sent anywhere. That matters because agent sessions often contain source code, file paths, and secrets.
Claude Code saves each session as a .jsonl file in ~/.claude/projects/, in a folder named after the project. Codex CLI saves them in ~/.codex/sessions/, by date. On a Mac, press Cmd+Shift+. in the file picker to show these hidden folders.
Some models return their reasoning encrypted or redacted, so it isn't in the file. The viewer marks where it was rather than leaving a gap.
They add up the usage the file records: input, output, and cached input. Claude Code records usage on every reply, and Codex records a running total. Message lists without usage show no totals.
No. Everything is shown as plain text, so nothing inside a transcript can run in your browser or load anything.