Interactive Web Form for Generating Multiple Random Strings - n8n Workflow

Developers needing unique temporary tokens or passwords.
Security professionals requiring high-entropy keys.
Teams looking for a simple, self-hosted utility without relying on external services.
Users seeking robust examples of how to combine n8n trigger forms with data processing.

Generating secure, random data is a common necessity in development and security operations. This specific n8n workflow addresses this need by providing an accessible web form interface powered by the n8n trigger node. Users simply input the desired string length and the number of copies they need. The n8n backend handles the complex logic: duplicating the request, securely generating base64-encoded strings using the n8n crypto node, formatting the results into a readable HTML list, and instantly displaying the output. This is a highly practical n8n template for demonstrating core flow control capabilities.

This automation begins with the randgeneratorform n8n trigger, which presents a public web form asking for two numerical inputs: 'length' and 'copies'.

1. Request Duplication: The data flows to the duplicates n8n node (a Set node configured for duplication). This critical step generates the required number of items (N-1 additional items, where N is the 'copies' input) so the subsequent generation step runs the correct number of times.


2. String Generation: The Generate a random string n8n node, using the Crypto operation, runs once for each item created in the previous step. It dynamically uses the 'length' input from the initial n8n trigger form to determine the size of the generated string (Base64 encoded).


3. Item Formatting: The format an item n8n node wraps each individual random string into an HTML list item (
4. ...
).

5. Aggregation: The concatenate items n8n node (a Summarize node) gathers all the individual list items and merges them into a single string (concatenated_data), which represents the complete, unordered list.


6. HTML Display: The format into html n8n node embeds this concatenated data into a full, styled HTML document, including header information pulled from the original n8n trigger input.


7. Final Output: The Display results n8n node, which is configured as the completion step for the form, renders the final HTML page back to the user, showcasing all the generated random strings. This ensures a clean, interactive user experience within this n8n workflow.

To deploy this useful n8n workflow template, follow these steps:

1. Import: Copy the provided JSON code and paste it directly into your n8n instance via the 'New' menu > 'Import from JSON'.


2. Activate Trigger: Locate the starting n8n trigger node, randgeneratorform.


3. Test Endpoint: Save and activate the n8n workflow. Once active, click the webhook URL provided by the form trigger node to open the live web form in your browser. Since this n8n template does not require external credentials, it can be run immediately.


4. Usage: Input your desired length and number of copies and submit the form. The final result will be displayed instantly on the webhook completion page.

randgeneratorform (Form Trigger): This is the initiating n8n trigger for the entire process. It captures user inputs for length and copies via a public web form interface.
duplicates (Set Node): Crucial for controlling the iteration count. It duplicates the initial item N-1 times, where N is the user-defined copy count, ensuring the generation n8n node runs exactly N times.
Generate a random string (Crypto Node): The core generation component. Uses the generate action to create secure, random base64 strings. The length parameter is dynamically set via an expression pulling data from the n8n trigger form.
concatenate items (Summarize Node): Aggregates the individually formatted strings into a single, cohesive payload (concatenated_data). This aggregation is essential before rendering the full HTML page.
format into html (HTML Node): Assembles the raw data into a complete, styled HTML page, dynamically displaying the input parameters and the list of generated strings. This prepares the final visual output for the user.
Display results (Form Node): Serves as the final step of the n8n workflow. It takes the HTML generated in the previous step and displays it as the response to the user who submitted the initial n8n trigger form.