Free tools
Free n8n tools
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AY N8N has three free n8n tools. The cron builder writes a Schedule Trigger cron and lists the next 10 runs. The JSON checker finds broken connections and hardcoded keys in a workflow export. The expression tester runs expressions on sample JSON.
Schedule a workflow
For workflows that start on a timer with the Schedule Trigger node.
n8n cron expression builder
Turns a schedule into the cron string for the Schedule Trigger and shows the next 10 run times in the timezone you pick.
Build a cron expression →
Check a workflow
For workflow files you downloaded from n8n or got from someone else.
n8n workflow JSON checker
Finds broken connections, nodes with no input, credential names and hardcoded keys in an exported workflow, then gives you a cleaned copy.
Check a workflow JSON →
Debug expressions
For the {{ }} expressions you type into node fields.
n8n expression tester
Runs an expression such as {{ $json.name }} or {{ $now.toISO() }} on sample JSON and shows the result or the error.
Test an expression →
How these tools work
- Each tool runs in your browser. What you paste or type is not sent to a server or saved, and there are no accounts or API keys.
- The rules come from n8n's own docs. Each tool page lists the pages it uses and the date we checked them.
- The expression tester is an approximation of n8n, not n8n itself. Its page lists the helpers and variables it does not support.
- The cron builder keeps your expression and timezone in the address bar, so you can send a schedule to your team as a link.
Guides and templates that use these tools
- Move Pipedream workflows to n8n, a step-by-step guide for rebuilding schedules, code steps and data references.
- Claude Fable 5.2 in n8n, which maps workflow data into an API request with an expression.
- Browse all n8n workflow templates
Want someone to build, review and run your n8n workflows? AY Automate builds and looks after n8n automations.
Free n8n tools FAQ
What free n8n tools does AY N8N have?
Three. The cron expression builder writes the cron string for the Schedule Trigger node and lists the next 10 run times. The workflow JSON checker finds broken connections and hardcoded keys in an exported workflow. The expression tester runs {{ }} expressions on sample JSON.
Do these tools send my workflow or data anywhere?
No. All three run in your browser. What you paste or type is not sent to a server or saved, and none of them needs an account or an API key.
Do I need n8n to use them?
No, the tools work on their own. You need n8n to use what they give you: paste the cron into a Schedule Trigger, import the cleaned workflow, or copy the expression into a node field.
Will the expression tester give the same result as n8n?
Not always. It copies n8n's rules for {{ }} blocks and a subset of its helper functions, but it is not n8n. Its page lists what is missing. Check the final expression in your own workflow.
My scheduled workflow runs at the wrong time. Which tool helps?
The cron expression builder. Pick the timezone your workflow uses and it shows when each run happens there and in UTC. Its page also explains how n8n picks the timezone for a Schedule Trigger.
Sources
All checked November 12, 2026. Each tool page has its own, longer list.
- n8n docs: Schedule Trigger node (the cron builder)
- n8n docs: export and import workflows (the workflow JSON checker)
- n8n docs: expression reference (the expression tester)