# EcomToolsHub (xaxdi.com)

> Free, fast, client-side e-commerce calculation and data manipulation utilities for Shopify merchants, DTC brands, and global commerce operators. All processing runs 100% locally in browser memory with zero tracking or server-side data collection. Features 1-click Plain-English terminology translation, interactive jargon-free glossaries, and zero-scroll Zen Focus workspaces.

Full documentation: https://xaxdi.com/llms-full.txt

## Usability & Accessibility Innovations
- **1-Click Plain English Mode**: Merchants can toggle between industry terminology (`⚡ Standard`) and plain language (`💡 Plain English`) to translate complex acronyms (COGS, CIF, DIM Divisor, GSM-7, CAPEX) into clear everyday explanations across all inputs and results.
- **Terminology Decoded Glossaries**: Every tool includes an in-depth reference glossary with anchor links and interactive micro-tooltips (`ⓘ`).
- **Zen Focus View (F key / Full View)**: A full-viewport, distraction-free workspace that hides global navigation and site chrome while locking inputs and live calculations side-by-side in a zero-scroll 100vh dual pane. Press `F` to toggle, `Esc` to exit.

## Tools & Utilities

- [Payment Gateway Fee & Net Margin Breakeven Calculator](https://xaxdi.com/tools/gateway-fee-breakeven-calculator/): Calculates real net profit, payment processor fees (Stripe, Shopify Payments, PayPal, Razorpay, Afterpay), and minimum retail breakeven price. Features Plain English mode (translates COGS & fees) and Zen Focus view. Formula: Price = [COGS + Shipping + CPA + FixedFee - ShipCharged × (1 - Rate)] / (1 - Rate - TargetMargin).
- [Shopify CSV Variant Splitter & Cleaner](https://xaxdi.com/tools/shopify-csv-variant-cleaner/): Validates and partitions product catalogs exceeding Shopify's 100-variant / 3-option limits into sibling CSV chunks while stripping UTF-8 BOM bytes and standardizing quotation marks. Features Plain English column definitions and Zen Focus view.
- [Multi-Item Box Sizer (3D Knapsack Fit)](https://xaxdi.com/tools/multi-item-box-sizer/): 3D orthogonal container packing optimization (First-Fit Decreasing) and dimensional weight calculation (DIM 139 / 5000) to eliminate carrier oversize and air-shipping surcharges. Features 3D box visualizer, Plain English mode, and Zen Focus view.
- [Tiered Bundle Discount & Margin Safeguard](https://xaxdi.com/tools/bundle-discount-margin-safeguard/): Models volume discounts (Buy 2 Save 10%, BOGO) and sets mathematical discount ceilings to prevent negative order contribution margins during high-COGS variant cherry-picking. Includes Plain English definitions and Zen Focus view. Formula: Max Discount = 1 - [(Total COGS + Shipping + Fee) / (Revenue × (1 - Target Margin - Gateway Rate))].
- [Shopify Image Aspect-Ratio Normalizer](https://xaxdi.com/tools/image-aspect-ratio-normalizer/): Batch pads and standardizes mixed-dimension product photos into uniform 2048x2048 square WebP/PNG canvases using client-side HTML5 Canvas with zero server uploads. Features Plain English toggle and Zen Focus view.
- [SKU & Barcode Taxonomy Generator](https://xaxdi.com/tools/sku-barcode-taxonomy-generator/): Generates modular scanner-ready inventory SKUs ([Brand]-[Cat]-[Style]-[Color]-[Size]), calculates Modulo-10 UPC/EAN check digits, and creates printable Code-128 vector barcodes. Features Plain English labels and Zen Focus view.
- [Cross-Border Landed Cost, Duty & VAT Estimator](https://xaxdi.com/tools/cross-border-landed-cost-vat/): Estimates total CIF landed cost, customs duties, and compound import VAT/GST for US ($800 de minimis), UK (£135 IOSS), EU (€150 IOSS), and China (5,000 RMB CBEC). Features Plain English trade terms and Zen Focus view. Formula: VAT = (CIF + Duty) × VAT Rate.
- [Bulk Alt Text & Google SERP Pixel Formatter](https://xaxdi.com/tools/bulk-alt-text-seo-formatter/): Batch formats WCAG 2.2-compliant image alternative text (<125 chars) and evaluates real Google SERP title pixel truncation limits (600px desktop / 520px mobile via HTML5 Canvas font metrics). Features Plain English WCAG rules and Zen Focus view.
- [Return & Restocking Loss Profit Bleed Auditor](https://xaxdi.com/tools/return-restocking-loss-auditor/): Quantifies 5 hidden reverse logistics cost drivers (labels, labor, non-refundable gateway fees, liquidation loss, lost freight) and calculates required retail price buffer on kept orders. Features Plain English cost breakdown and Zen Focus view. Formula: Price Buffer = (Returns × Cost Per Return) / Kept Orders.
- [Cart Abandonment SMS & WhatsApp Builder](https://xaxdi.com/tools/cart-abandonment-sms-builder/): GSM-7 vs UCS-2 16-bit encoding segment counter, 1-click smart quote sanitizer (saving 66% on multi-segment SMS), TCPA compliance disclaimers, and WhatsApp wa.me click-to-chat links. Includes Plain English explanations and Zen Focus view.
- [Payment Gateway Development Cost & Build vs. Buy Estimator](https://xaxdi.com/tools/payment-gateway-build-cost-estimator/): Calculates custom in-house payment gateway engineering costs ($120k-$450k+ across 1,000-3,500 dev hrs), annual PCI-DSS Level 1 QSA audits ($45k-$120k/yr), cloud HSM hosting ($2.5k-$10k/mo), 3-year TCO matrix (In-House vs White-Label SaaS vs Stripe), volume & AOV sliders, mathematical breakeven floors (~$1.5M-$2.5M/mo), and 6 localized benchmarks (US, UK 20% VAT, EU 21% VAT, AU 10% GST, India 18% GST / RBI PA-PG, Japan 10% JCT / METI) with Plain English definitions and Zen Focus view.

## Technical & Privacy Constraints
- Execution Model: 100% client-side execution in browser memory (Web Workers, Canvas API, PapaParse, JSZip).
- Privacy: Zero financial data, product titles, images, or customer phone numbers leave the user device.
- Pricing: 100% Free ($0.00) without login, accounts, API keys, or usage caps.
- Category: BusinessApplication / E-Commerce Operations / Plain-English Calculators.
- Publisher: EcomToolsHub (https://xaxdi.com)