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Automatic speedtest for AsusWRT Merlin - with graphs
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spdMerlin - Automatic speedtest for AsusWRT Merlin - with graphs

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Updated on 2020-02-15


Run automated speedtests for your Internet on your router with graphs available on the Addons page of the WebUI.

spdMerlin is free to use under the GNU General Public License version 3 (GPL 3.0).

spdMerlin uses Speedtest CLI

spdMerlin includes the required licenses, which must be accepted on first run of Speedtest CLI.

This script began as a user-friendly installer for a personal project developed by JGrana

A swap file is required to ensure smooth operation of the script.

The speedtest is scheduled to run at 12 past and 42 past the hour, every hour, by default.

Menu UI

Graph example

Supporting development

Love the script and want to support future development? Any and all donations gratefully received! PayPal donation

Supported Models


All models supported by Asuswrt-Merlin. Models confirmed to work are below:

  • RT-AC68U
  • RT-AC86U
  • RT-AC3100

Firmware versions

You must be running firmware no earlier than 384.XX Asuswrt-Merlin


Using your preferred SSH client/terminal, copy and paste the following command, then press Enter:

/usr/sbin/curl --retry 3 "" -o "/jffs/scripts/spdmerlin" && chmod 0755 /jffs/scripts/spdmerlin && /jffs/scripts/spdmerlin install


To launch the spdMerlin menu after installation, use:


If this does not work, you will need to use the full path:



Launch spdmerlin and select option u


Please post about any issues and problems here: spdMerlin on SNBForums


I haven't used scripts before on AsusWRT-Merlin

If this is the first time you are using scripts, don't panic! In your router's WebUI, go to the Administration area of the left menu, and then the System tab. Set Enable JFFS custom scripts and configs to Yes.

Further reading about scripts is available here: AsusWRT-Merlin User-scripts

WebUI enable scripts

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