Ecommerce & Catalog Tools
A connected toolkit spanning the whole seller workflow: generate realistic IBAN, EAN/UPC, GTIN and barcode test data, convert between GTIN lengths and ISBN formats, generate SKUs in bulk with collision checking, catch product CSV import errors before they reach Shopify, check images against Amazon, eBay and Shopify's requirements, and work out GST, margins, shipping costs, RTO costs and marketplace payouts once a listing is live. Every tool runs entirely in your browser; nothing is uploaded.
Prefer a guided, step-by-step version of this same workflow? See the full Ecommerce Toolkit walkthrough.
GTIN Converter
Convert product codes between GTIN-8, GTIN-12 (UPC-A), GTIN-13 (EAN-13) and GTIN-14, validate check digits, and normalise a whole catalog in bulk.
EAN / UPC Generator
Generate valid-checksum EAN-13, EAN-8, UPC-A and GTIN-14 product codes in bulk for test catalogs, and validate the check digit of any existing code.
Barcode Generator
Render a scannable EAN-13, UPC-A, CODE128 or ITF-14 barcode from a product code and download it as a PNG for labels and store listings.
SKU Generator
Generate consistent SKU codes in bulk from a custom pattern, with variant permutations, sequential numbering and collision checking. Free, no sign-up.
Product CSV Validator
Check a product CSV for missing columns, broken variant handles, duplicate SKUs, invalid barcodes and bad prices before you import it.
Marketplace Image Checker
Check product images against each marketplace's dimension, aspect ratio, file size and format rules before you upload them.
ISBN / ASIN Validator
Validate ISBN-10 and ISBN-13 check digits, convert between them, and check Amazon ASIN format in bulk.
IBAN Generator
Generate format-valid, checksum-correct IBAN numbers for any supported country for testing and QA, and validate the checksum of any IBAN.
GST Calculator
Add or remove GST at any standard slab rate, split into CGST/SGST for intra-state supply or IGST for inter-state supply.
Profit Margin Calculator
Work out margin and markup from cost and selling price, roll shipping and duty into a per-unit landed cost, or back into the price a target margin needs.
Discount Calculator
Work out stacked/sequential discounts, a Buy-X-Get-Y-free offer's real effective discount, and whether a bundle price beats buying items individually.
Shipping Cost Calculator
Work out volumetric vs actual chargeable weight and the total shipping cost from your own courier's rate card, including fuel surcharge and COD fees.
COD & RTO Cost Calculator
Work out your own RTO rate, what a single return-to-origin actually costs, and how COD's net revenue per order compares to a discounted prepaid option.
Marketplace Fee Calculator
Enter your marketplace's commission, payment gateway, and shipping fees to see the real net payout and margin behind a listing price.