Tools that open in mainland China
379 tools, all reachable directly, all usable without an account.
Check if a URL is phishing or malicious with multiple engines
An open collaborative whiteboard you join by sharing a link
Send large files without an account, links expire and delete themselves
WebGL lessons from first principles with runnable demos, including skinning; Chinese translation available.
Test your webcam picture, resolution and frame rate in the browser
Get a temporary callback URL and inspect webhook requests live
Spin a wheel to pick names or prizes fairly from a list
Look up a domain's registrant, registrar and expiry via WHOIS
Look out of a stranger's window somewhere in the world
A global wind and weather map with animated airflow you can drag
A computational knowledge engine that answers questions and plots functions
Shape text into word cloud art with no registration
Live word, character and reading time stats with grammar checks
Academic editing and translation, basic features free without login
World Bank open data: indicators for every country, downloadable
End-to-end encrypted transfers up to 10 GB that expire automatically
Edit, merge and convert PDFs from the web page without logging in
Validate YAML online with errors pinned to the line
Search engine that queries many 3D printing model sites at once; no account needed.
Paste a YouTube link to export its full transcript free
Convert documents, images, audio and video, download without an account
A lightweight JavaScript library for pseudo-3D illustrations, with examples
Live satellite imagery of Earth with cloud, fire and radar layers
