GTIN Generator
Generate format-valid GTIN-14 values for development and feed QA. Official product identifiers must come from GS1 or a verified brand or supplier.
Quick task summary
- Best for:
- Generating GTIN values during product-data QA
- Input:
- A quantity within your current plan limit
- Output:
- Format-valid GTIN-14 values
- Next action:
- Use an authorized GS1 assignment for live listings
Quick Answers
TL;DR: Choose a quantity - Choose how many test values to generate within your current plan limit. The web tool does not ask for or assign a GS1 company prefix.
Q: What does this GTIN tool generate?A: It generates 14-digit test values whose structure and check digit pass format validation. The result is useful for development and product-feed QA, but it is not an official product assignment.
API Access
GTIN Generator API is available by API
Paid members can create an API key from settings and grant each key only the scopes it needs. The full secret is shown once; store it in an environment variable or secret manager, never in code, URLs, logs, or chat. Current plan and API responses determine quota and rate limits.
POST /api/v1/tools/gtin/generateMaximum 10 GTINs per batch
Guest limit: Maximum 10 GTINs per batchSign in to unlock higher limits
Include brand, product type, and core attributes.
Merchant Center / Catalog need a stable brand value.
Use real GTINs from brand, supplier, or GS1 for production feeds.
Feed, PDP, and checkout price must match.
Use stable values such as in_stock, out_of_stock, or preorder.
Main image should be public, clear, and free from risky overlays.
Row 3 / title / title_too_short: Current text value (10 chars); Expected at least 20 characters; Suggestion Add the brand, product type, and important product attributes to the title.; Severity warning
Row 3 / gtin / gtin_invalid: Current numeric value (3 digits); Expected 14 digits with a valid check digit; Suggestion Use the verified GTIN assigned to this product; do not substitute an internal SKU.; Severity error
Row 3 / price / price_invalid: Current numeric value (1 digits); Expected a finite number greater than 0; Suggestion Set the price to the same value used by the product page and checkout.; Severity error
Row 3 / availability / availability_invalid: Current text value (8 chars); Expected in_stock, out_of_stock, preorder, or backorder; Suggestion Use one stable availability value and align it with the product page.; Severity error
Row 3 / image_link / image_url_invalid: Current text value (9 chars); Expected a public http(s) URL; Suggestion Provide a publicly reachable image URL without private-network addressing.; Severity error
Use this GTIN generator for development and internal product-data QA when you need format-valid GTIN-14 test values. The result is a workflow aid only. Replace every generated value with an official GS1, brand, or authorized supplier assignment before a commercial listing.
Inputs
What to enter
Choose how many test values to generate within your current plan limit. The web tool does not ask for or assign a company prefix.
Outputs
What you get back
The tool returns format-valid GTIN-14 test numbers that you can copy or export as CSV. It also checks common feed fields and can export a feed-issue list.
Rule
Core rule
A GTIN is a product identifier. The check digit helps detect number-entry errors, but it does not prove ownership or marketplace acceptance.
Example
Example result
When a catalog import includes a GTIN field, generated test values can verify file structure and validation logic before the final official identifiers are attached.
Use it when
Best use cases
Use it for QA, developer testing, product-feed formatting, internal SKU mapping, and learning how GTIN check digits work.
Do not use it when
Limits
Do not rely on generated test numbers as official commercial GTIN ownership. Marketplaces can reject identifiers that are not registered or do not match product data.
Related tutorials
Set ownership for SKU, barcode, variant, and feed data before scaling catalog work.
Understand how identifier and feed issues create listing or diagnostic problems.
Connect product identifiers with titles, attributes, variants, and taxonomy fields.
Choose a quantity
Choose how many test values to generate within your current plan limit. The web tool does not ask for or assign a GS1 company prefix.
Generate GTIN values
Select Generate GTIN. The tool creates GTIN-14 test numbers and calculates the check digit for each value.
Check the boundary
A format-valid number is not proof of GS1 assignment, brand ownership, or marketplace acceptance. Keep generated values in development and feed-QA environments.
Copy or export for QA
Copy the values or export the CSV for internal testing. Replace every test value with a verified GS1, brand, or supplier assignment before a live listing.
What does this GTIN tool generate?
It generates 14-digit test values whose structure and check digit pass format validation. The result is useful for development and product-feed QA, but it is not an official product assignment.
Can I use a generated value on Amazon or Google Shopping?
No. Do not publish these test values as product identifiers. A marketplace can require an identifier that is officially assigned and matches the product, brand, and listing data.
What is the difference between format-valid and officially assigned?
Format validation checks the number length and check digit. An official assignment links the identifier to an authorized company and product record. This tool only performs the first kind of check.
What is a check digit?
The check digit is the final digit of a GTIN. It is calculated from the preceding digits and helps catch common entry or transmission errors. A correct check digit does not prove ownership.
What can I export from the web tool?
You can copy generated test values or export them as CSV. The same page also checks common product-feed fields and can export a list of detected feed issues. It does not create barcode artwork.
How do I get an official product identifier?
Use the GS1 member organization for your market or a verified identifier supplied by the product's brand or authorized supplier. Confirm the assignment against the exact product before a live listing.
Read Tool Notes
GTIN Generator
This tool creates GTIN-14 test numbers with calculated check digits for development, feed validation, and internal workflow testing. It does not assign official product identifiers.
What it helps with
- - Create format-valid GTIN values quickly
- - Check GTIN fields and CSV structure before launch
- - Keep official assignment separate from format validation
Practical outcomes
- - Earlier detection of formatting and missing-field issues
- - A clearer handoff before official identifiers are added
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