Yandex Internet Speed Test CLI

CLI tool for measuring internet speed using Yandex CDN infrastructure. A terminal alternative to yandex.ru/internet for headless servers.

Quick Start

wget -qO- https://raw.githubusercontent.com/stealthsurf-vpn/yandex-speedtest-cli/refs/heads/main/speedtest.sh | bash

What It Measures

• Download — download speed via 3 parallel streams from Yandex CDN nodes
• Upload — upload speed (50 MB payload) via 3 parallel streams
• Ping — HTTP RTT to CDN servers (trimmed mean, 10 samples per server)
• Connection Info — IPv4/IPv6, ISP, geolocation

Example Output

  ╔══════════════════════════════════════╗
  ║      Yandex Internet Speed Test      ║
  ║          by StealthSurf VPN          ║
  ╚══════════════════════════════════════╝

  ✓ Probe servers fetched
  Probe servers: 3 Yandex CDN nodes

  ✓ Connection info received
  IPv4:      203.0.113.1
  ISP:       AS12345 Example ISP
  Location:  Moscow, Moscow, RU

  ✓ Ping measured
  ✓ Download measured
  ✓ Upload measured

  ────────────────────────────────────────
  Results
  ────────────────────────────────────────

  ↓ Download:  85.42 Mbit/s
  ↑ Upload:    42.15 Mbit/s

  ● Ping:      12.34 ms
    min: 10.21 ms / max: 15.67 ms / jitter: 1.23 ms

  ────────────────────────────────────────
  Server: Yandex CDN | 2026-02-28 15:00:00 MSK

Flags

Flag	Description
--debug	Verbose output: server URLs, data size, timing, per-stream speed breakdown

bash speedtest.sh --debug

Dependencies

• curl
• bc
• python3

Missing dependencies are installed automatically via apt-get, yum, or apk.

How It Works

1. Fetches CDN probe servers from Yandex API (/internet/api/v0/get-probes)
2. Detects IP and ISP via ipv4-internet.yandex.net and ipinfo.io
3. Measures ping — HTTP RTT (time_starttransfer - time_appconnect) with top/bottom 25% trimmed
4. Downloads 50 MB files from 3 CDN nodes in parallel (10s, --max-time)
5. Uploads 50 MB of random data to 3 CDN nodes in parallel (10s)
6. Sums per-stream speeds to get total throughput

Supported OS

• Ubuntu / Debian
• CentOS / RHEL / Fedora
• Alpine Linux