Every little tool an online seller needs.
Fees. Margins. GST. Title limits. Image sizes. Barcodes. CSV fixes. 119 tools for the small, repetitive jobs between sourcing a product and selling it — all in your browser, so your prices and files stay yours.
Seven jobs. A few strong engines behind many simple doors.
The same fee engine serves Amazon, Flipkart, Meesho, Etsy and eBay; the same resizer serves every marketplace; the same CSV engine dedupes, reprices and splits. Each tool is one page with one job.
Know what one sale leaves you before you list it
Pick the marketplace, type the price and your cost, and see every fee come off — referral, closing, payment, listing, GST on fees, the shipping you pay — and what lands in your account. Rates are editable, because your category's rate card is the truth.
- Selling price solved backwards from the margin you want
- Landed cost per unit with duty and IGST, with or without input credit
- Markup versus margin, bundles, price per unit, charm-price rounding for a whole column
Titles and bullets inside every limit, with nothing that gets a listing suppressed
Paste a title and see it against Amazon, Etsy, eBay, Shopify and Google Shopping at once — with the cut-off search actually shows. The restricted-words checker flags 'best seller', 'free shipping', 'guarantee', links and marketplace names before a bot does.
- Bullet formatter: rough notes → five clean bullets under the limit
- Search terms counted in bytes, the way Amazon counts them
- Keyword counter with density, HTML stripper for exported descriptions, listing diff
Every marketplace size from one photo, and a white-background check that says why
Drop a product photo and get Amazon, Flipkart, Meesho, Myntra, Shopify, Etsy, eBay and Google sizes rendered at once. The checker samples the border for pure white, draws the product's box on the picture and tells you whether it fills 85% of the frame — pass or fail per marketplace.
- Pad to square on white instead of letting the marketplace crop
- Compress to a target like 500 KB, strip EXIF, convert WebP to JPG for Amazon
- Watermark, label text, blur a price tag — all in the browser
SKUs, barcodes and the weight the courier will actually charge
Build a whole variant grid of SKUs from a pattern, draw Code 128 and EAN-13 barcodes as SVG or a printable sheet, validate a GTIN's check digit before Amazon rejects it. Length × width × height ÷ 5000 against actual weight tells you the chargeable weight before you pick a box.
- Reorder point, days of stock, sell-through and turnover in plain numbers
- Carton fit: how many units per box, in the best orientation
- Coupon codes in batches, made with the browser's cryptographic random
Reprice a thousand rows without opening Excel
Drop a listing or order export. Raise a price column 10% and round to .99, remove duplicate SKUs, keep only the columns an import template wants, split a big sheet into files the marketplace will accept — and download. The file never leaves your browser.
- Comma, semicolon, tab and pipe detected; quoted cells handled
- Column stats: sum, average, min, max of an order or stock column
- Merge several exports under one header
Built for people who list, price and ship every week.
Amazon & Flipkart sellers
Fees, GST, title and bullet limits, restricted words, 2000×2000 white-background images, GTIN checks — the listing routine, shortened.
Meesho & Myntra sellers
The real net after shipping slabs and returns, square and 3:4 images, bulk repricing of a whole catalogue.
Shopify & WooCommerce stores
Payment-fee-only economics, SEO titles Google will show, coupon codes, UTM links, CSV imports that just work.
Etsy & eBay sellers
Etsy's 140-character title and 13 tags, eBay's 80, fee calculators for both, barcodes and photos at the right size.
Brand owners on many marketplaces
One product photo → every marketplace size; one price sheet → every marketplace price; one SKU pattern everywhere.
Agencies and VAs who manage listings
Batch tools, CSV tools and checkers that catch what a rushed upload misses.
Three steps. No account for the tool, just for you.
Pick the tool
By marketplace or by job. Every tool is one page with one task.
Type the numbers, paste the text or drop the file
It stays in your browser. Nothing is uploaded, nothing waits in a queue.
Copy or download
Results update as you type. One click, one file — or one click, all of them.
119 tools, by category
Pricing & profit
18 toolsMargins, marketplace fees, GST, landed cost, discounts, break-even.
Profit margin calculator · Markup ↔ margin converter · Selling price calculator · Marketplace fee calculator · Amazon fee calculator · Flipkart fee calculator · …
Listing text
26 toolsTitles, bullets and descriptions inside every marketplace's limits, cleaned and checked.
Listing length checker · Amazon title checker · Amazon bullet point checker · Amazon description checker · Amazon search terms checker · Etsy title checker · …
Product images
23 toolsResize to marketplace sizes, pad to square, white-background and quality checks, compress, watermark.
Marketplace image resizer · Image resizer · Square padder · Image cropper · Image compressor · Image converter · …
Product video
16 toolsTrim, reshape, compress and convert product clips — in your browser.
Video trimmer · Video cutter · Video compressor · Video resizer · Video cropper · Video converter · …
Inventory & shipping
11 toolsSKUs, barcodes, QR codes, volumetric weight, reorder points, carton fit, coupon codes.
SKU generator · Barcode generator · EAN / UPC check digit · QR code generator · Volumetric weight calculator · Reorder point calculator · …
Bulk & CSV
10 toolsOpen, clean, dedupe, reprice, split and convert listing and order sheets.
CSV viewer · CSV column picker · CSV deduplicator · Bulk price update · CSV find and replace · CSV splitter · …
Ads & growth
9 toolsROAS, CAC, conversion, AOV, lifetime value, ratings and UTM links.
ROAS calculator · CAC calculator · Conversion rate calculator · Average order value · Customer lifetime value · Rating calculator · …
No AI. Just tools.
Ecomitz does not write your listing or invent a price. It calculates, checks, resizes, converts and cleans what you already have — the same way every time.
Your files and prices never leave your device
Photos, CSVs and numbers are processed by your own browser. Close the tab and they are gone. We could not see them if we wanted to.
Human support, in the app
Help is a button in the sidebar. Every ticket is numbered and answered by a person in the same thread.
Free to start. Pay when the limits bite.
Free
Try every tool.
- All calculators, listing-text and CSV tools
- Image tools up to 5 files a day
- Product video clips up to 1 minute
- Downloads carry a small Ecomitz mark
- Free account
Starter
Most popularFor one seller, every day.
- Everything in Free, unlimited
- No mark on downloads
- Product video clips up to 10 minutes
- Batch: up to 20 files at once
- Saved presets and history
- Email support
Pro
For sellers on several marketplaces.
- Everything in Starter
- Video clips up to 60 minutes
- Batch: up to 100 files at once
- Priority support
Prices in Indian rupees, GST extra. International cards accepted. Compare plans →
Are the marketplace fee rates exact?
They are typical defaults for each marketplace, and every rate is an editable field. Your category's rate card is the truth — put its numbers in and the result is exact.
Is it really no AI?
Yes. Every tool is deterministic — arithmetic, canvas, text rules. The same input gives the same output every time, and nothing is invented.
Why does the first video tool take a moment?
Your browser downloads a 32 MB processing engine once. After that it starts instantly and runs on your machine.
What does Free include?
Every calculator, listing-text and CSV tool, five image files a day, product video clips up to a minute, with a small mark on downloads. Starter and Pro lift the limits and remove the mark.
Does it work with Excel files?
CSV and TSV, which every marketplace exports and imports. Save an .xlsx as CSV first.
Open the toolbox.
Sign in with your email — a code, no password. Free plan included.