Fast, Client-Side E-Commerce Utilities
Single-purpose calculators and data helpers designed for daily store workflows.
Gateway Fixed-Fee & Margin Breakeven Calculator
Calculate fixed fee impact on low AOV products and find your exact breakeven price with CPA, shipping, and payment gateway fees. Features US, UK, EU, AU, IN, JP country rates.
Shopify CSV Variant Splitter & Cleaner
Bypass Shopify 100-variant limit and fix CSV quotes or UTF-8 BOM import errors. Split large product catalogs by handle into compliant parts.
Multi-Item Box Sizer (3D Knapsack Fit & DIM Weight)
Calculate 3D knapsack box fit and reduce DIM weight on multi-product orders. Compare US 139 divisor, UK Royal Mail, DHL 5000, AusPost 4000, and Yamato linear sizes.
Tiered Bundle Discount & Margin Safeguard
Calculate maximum safe volume discounts (Buy 2 Save 10%) with mathematical margin floors. Simulate cherry-picked variant bundles and protect contribution margins.
Shopify Image Aspect-Ratio Normalizer
Make rectangular supplier images square online free. Batch add white canvas padding to 2048x2048 WebP files without cropping or distorting product details.
SKU & Barcode Taxonomy Generator
Build POS barcode scanner compatible SKU naming conventions and Code-128 barcodes. Prevent duplicate SKU collisions with Excel-safe catalog export.
Cross-Border Landed Cost & VAT Estimator
Compare DDP vs DDU total landed costs with EU IOSS €150 threshold, UK £135 rules, US $800 de minimis, and carrier customs clearance surcharges.
Bulk Alt Text & Google SERP Formatter
Batch generate WCAG-compliant image alt text under 125 characters and truncate Google title tags to 600px whole-word boundaries for Shopify CSV export.
Return & Restocking Loss Auditor
Audit reverse logistics profit bleed and calculate required retail price buffer to cover return rate loss. Models EU 14-day rules, non-refundable gateway fees, and India COD RTO.
Cart Abandonment SMS & GSM-7 Counter
Count GSM-7 vs UCS-2 SMS segments and sanitize smart quotes or emojis that double SMS costs. Build compliant abandoned cart copy with TCPA, GDPR, and wa.me links.
Payment Gateway Build Cost Estimator
Calculate custom payment gateway engineering cost ($150k-$600k+), annual PCI-DSS Level 1 QSA audits, and volume breakeven vs Stripe. Features Plain English fintech definitions and Zen Focus view.
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