100% Offline · No Subscription · No Cloud

Seller tools that work.
Without giving up your data.

Browser-based tools for Etsy and Amazon sellers. One-time purchase. Works offline. Your data never leaves your device — ever.

Browse All 27 Tools → How it works ↓
27
Tools available
$0
Monthly fees
100%
Works offline
0 bytes
Data uploaded
GDPR
Safe by design

How it works

Simple. Private. Permanent.

Buy once, use forever. No account. No internet connection after purchase.

Step 01
💳

Buy once on Gumroad

One-time payment. No subscription, no recurring charge. Download the HTML file immediately after purchase.

Step 02
📁

Open in your browser

Double-click the file. It opens in Chrome, Firefox, or Edge. No installation, no setup, no account required.

Step 03

Works instantly. Offline.

Upload your data, get results in seconds. 100% local — nothing leaves your device, ever.

Etsy Seller Tools

6 tools
🔍
Listing Analyzer

Full SEO breakdown of your listing. See exactly what's holding back your clicks and sales.

LIVE
↔️
Listing Comparison

Compare two listings side by side. See exactly why one outranks the other.

LIVE
🎯
Keyword Intent Finder

Match your listing to real buyer intent. Stop guessing keywords, start ranking.

LIVE
🏷️
Tags Generator

Generate 13 high-intent tags built around buyer language — not keyword stuffing.

LIVE
✏️
Title Fix Tool

Diagnose weak titles and rewrite them into search-optimized, buyer-focused versions.

LIVE
💰
Etsy Profit Calculator

Fees, shipping, VAT — Etsy takes more than you think. Calculate your true profit per sale before you set your price.

LIVE

Amazon Seller Tools

11 tools
📊
No-Sale Detector

Clicks but no sales? Find the structural reason behind the conversion drop.

LIVE
⚠️
Product Risk Checker

Check a product idea for hidden risks before ordering inventory. Avoid costly mistakes.

LIVE
💥
Pain Finder

Extract real customer pain points from reviews. Build listings buyers actually want.

LIVE
💸
Ad Waste Killer

Find PPC keywords burning budget without converting. Cut waste, keep winners.

LIVE
📈
Rank Blocker Checker

Diagnose the structural blockers preventing your listing from ranking on page 1.

LIVE
🖼️
Image Count Validator

Find ASINs with too few images. Listings with 7+ images rank higher — catch them fast.

LIVE
Bullet Point Validator

Find bullet points exceeding Amazon's character limit before they block your flat file upload.

LIVE
🔎
Search Term Validator

Check backend search terms for byte-length violations before Amazon rejects your listing.

LIVE
🧮
FBA Profit Calculator

Know your real margin before you sell a single unit. Enter your costs, see your net profit instantly — no spreadsheet needed.

LIVE
🕵️
FBA Fee Auditor

Amazon's fees are full of surprises. Audit every charge on your ASIN and stop paying for errors you didn't even know existed.

LIVE
🏆
Listing Quality Checker

Score your listing against Amazon's ranking criteria. Fix what's dragging you down before competitors do.

LIVE
Productivity 2 tools
📄
PDF Tool

Merge, split, compress and edit PDFs in your browser. Files never leave your device.

LIVE
🧾
Invoice Generator

Create professional invoices in seconds. No account, no cloud, no monthly fee — just open and bill.

LIVE

Shopify Seller Tools

1 tool
🛒
Shopify Profit Calculator

Product cost, payment fees, shipping — see your exact margin per order. Built for Shopify sellers who want clarity, not guesswork.

LIVE

Calculators

7 tools
👕
POD Profit Calculator

Selling print-on-demand? Base cost, platform cut and shipping eat your margin fast. See what you actually keep per item before you set your price.

LIVE
📦
eBay Fee & Profit Calculator

Final value fees, payment fees, shipping — eBay's cut adds up. Find out your real profit per sale before that listing goes live.

LIVE
🎵
TikTok Shop Profit Calculator

Viral sales feel great — until fees and creator commissions hit. Calculate your true take-home on every TikTok Shop order.

LIVE
🏠
Airbnb / Vacation Rental Calculator

Cleaning, host fees, taxes and turnover costs quietly shrink your nightly rate. See what each booking really earns you.

LIVE
💼
Freelance Income & Fee Calculator

Platform fees, taxes and unpaid hours hide inside your rate. Find out what your freelance work actually pays — per project or per hour.

LIVE
👗
Fashion Reselling Calculator

Flipping clothes on Vinted, Depop or Poppy? Buy price, fees and shipping decide if it's a win. Check your margin before you list.

LIVE
🎓
Online Course Profit Calculator

Platform cuts, payment fees and refunds shape your course earnings. See your real profit per student before you hit publish.

LIVE

Why offline matters

Your seller data is your competitive edge. Keep it that way.

Every SaaS tool you log into stores your data on their servers. Your keywords, listings, flat files — all uploaded and indexed. Smart Local Tools never sees any of it.

  • Zero data upload — everything runs locally in your browser
  • No account required — open and use immediately
  • No analytics or tracking inside the tools
  • GDPR compliant by design — no servers, no compliance risk
  • Works without internet after purchase
🔒

No data upload

Runs 100% in your browser

📴

Works offline

No internet after purchase

💳

One-time only

No subscription. Ever.

🇪🇺

GDPR safe

No servers = no risk

FAQ

Common questions

Do the tools really work 100% offline?

Yes. After purchase you download a single HTML file. Open it in Chrome, Firefox or Edge — no server, no internet connection, no API call. You can disconnect your WiFi and it still works perfectly.

Is this a subscription? Will I be charged again?

No. Every tool is a one-time purchase. You pay once, download the file, and own it forever. No renewal, no trial period, no hidden fees.

Who is this for — beginner or advanced sellers?

Both. The tools give instant, actionable insights without requiring technical knowledge. Advanced sellers love the bulk analysis features such as flat file upload for 500+ ASINs at once.

Can I use these tools on Windows and Mac?

Yes. Any device with a modern browser works — Windows, Mac, Linux. Chrome and Firefox are recommended for best performance.