System health
The first card, System health, runs a set of checks on your installation each time you open the page. Its title summarises the result:- Ready to publish when every check passes.
- “N things to look at” when some checks warn.
- “N problems stop posts from going out” when a check fails.
Sending
This card decides what sends posts once they are due. Under Posts are sent by choose one of two modes:- The scheduler
- A queue worker
Each pass sends for sets how long one scheduler pass keeps taking queued jobs, from 10 to 55 seconds (default 45). Keep it under a minute so one pass ends before the next begins. Lower it if your host stops long cron jobs.
Cron job
The Cron job box shows the exact command for your installation and a tag with the last time the scheduler ran, or Has not run yet. Add it to your server to run every minute. In cPanel choose Once Per Minute and paste the command. Copy the crontab line copies the full line with the schedule included. The scheduler is considered stale when it has not run for 5 minutes. See Cron and queue for the full setup, including everything the scheduler does besides sending posts.Retries and waiting
The delay between tries is 2, 10 and 30 minutes after the first, second and third failure, and the last delay repeats. These delays are set in
config/publishing.php, not on this page. Stalled sends are checked every 5 minutes. What happens to a post that runs out of tries is covered in Failed posts.
Uploads
Images up to (1 to 200 MB, default 25) and Videos up to (1 to 10240 MB, default 2048) set the largest file anyone can add to the media library. Files are sent in pieces, so PHP’s own upload limit does not cap them. The page shows how much PHP takes per request and the piece size. These ceilings apply before each network’s own limits, which are checked again when a post is prepared. See Media library. The library accepts these formats:Watermark
The watermark is placed on images as they go out. Images in the library stay as they are, and videos are sent without it. It applies to every network.1
Upload the image
Choose a file under Watermark image. PNG, WebP or JPG up to 2 MB. A PNG with a transparent background works best. It is shown at about a fifth of the image width.
2
Position it
Set Position to Top left, Top right, Bottom left, Bottom right (default) or Centre, and Opacity from 10 to 100 percent (default 80).
3
Switch it on
Turn on Add the watermark to images and click Save settings. Saving with the switch on and no image shows “Add an image to use as the watermark.”
Defaults and housekeeping
- Default timezone is used for scheduling whenever a person or a post has not chosen one. It starts from the site’s time zone.
- Collect analytics reads followers and post performance back from the networks every hour. Each read counts against the networks’ API allowances. Turn it off to stop collection entirely. See Analytics.
- Keep read notifications is For good, or 30, 90, 180 or 365 days. Read publishing notifications older than this are deleted each night. Unread ones are always kept.

