CCViewer
CCViewer

$ cat ~/.claude/projects/**/*.jsonl

The Claude Code session history viewer

A Claude Code session viewer and JSONL history viewer that runs entirely in your browser. Private, free and open-source.

Drag a .jsonl history file or a whole project folder here, or click to choose

e.g. the entire ~/.claude/projects/ folder, or a single <sessionId>.jsonl inside it

https://ccviewer.top/claude-code-session-viewer
>
You
Fix the broken login page layout on mobile
⏺
Reply claude-opus-4-6
✻Let me inspect the login page styles first…
⏺ Readsrc/pages/Login.tsx

The issue was a missing wrap in the flex layout. Fixed and verified at 375px width.

CCViewer is a free, open-source Claude Code viewer for the .jsonl session files stored under ~/.claude/projects/. Use it as a Claude Code session viewer to replay any conversation, or as a JSONL history viewer to audit tool calls, thinking blocks, token usage and cost — everything is rendered locally in your browser, and files never leave your computer.

Markdown renderingCode blocks, tables, lists and quotes
Thinking blocksCollapsible extended thinking
Tool callsInputs and results, expandable
Usage & costToken usage, duration and cost
Multilingual interfaceSwitch between 10 languages in one click
Privacy first100% client-side, zero upload

Frequently Asked Questions

How do I view previous Claude Code sessions?
Claude Code saves every session as a JSONL file under ~/.claude/projects/<project>/<session-id>.jsonl. Drop a single file or the whole project folder here to browse the full conversation.
Is my session file uploaded anywhere?
No. Parsing happens entirely in your browser with no API calls and no server upload. Session files contain your code, file paths and sometimes secrets — which is exactly why this tool is 100% client-side.
What does the viewer support?
This Claude Code JSONL viewer supports Markdown rendering for user and assistant messages, extended thinking blocks, tool call parameters and results, images, token usage and cost stats — with an interface in 10 languages.
What is the .jsonl format?
JSON Lines — one independent JSON object per line. Claude Code logs every message, tool call and metadata entry as a line.
Is CCViewer free?
Yes, it is free and open-source. No sign-up required.

Session Library

Tip (macOS): in the picker press <kbd>⌘⇧.</kbd> to reveal hidden folders, or in Finder press <kbd>⌘⇧G</kbd> and type <code>~/.claude/projects</code>. The picker remembers your last folder.

Browser storage is full; some sessions were saved as summary only.

No sessions yet. Open a folder of .jsonl files to build your library.

Paste JSONL text

Paste the whole history file here, one JSON object per line (a single JSON array / object also works).