VizTracer

library 1.1.1 ·python

✓ verified Jun 28, 2026

VizTracer is a low-overhead logging, debugging, and profiling tool for Python that traces and visualizes code execution on a timeline. It supports multi-threading, multi-processing, asyncio, and PyTorch, and the front-end UI is powered by Perfetto. The current version is 1.1.1, and it has a regular release cadence with recent releases approximately every 1-2 months.

Traffic · last 30 days ↓29% vs prev 7d · indexed Sun Apr 12 · updated Sat Jul 11

total hits 23

actors 7 distinct systems

last hit 4d ago Googlebot

OAI-SearchBot

ChatGPT-User

Script

ByteDance

Search engines

Humans

top countries 🇺🇸 United States · 🇨🇦 Canada · 🇩🇪 Germany · 🇸🇬 Singapore · 🇳🇱 Netherlands

Resources

docsviztracer.readthedocs.io ↗

githubgithub.com/gaogaotiantian/viztracer ↗

packagepypi.org/project/viztracer/ ↗

API endpoints

full doc /v1/registry/viztracer

install /v1/registry/viztracer/install

compatibility /v1/registry/viztracer/compatibility