Free online tools for small businesses and online sellers: GST, product photos, QR codes and PDFs

Running a small shop or selling online means doing a dozen small jobs every day that have nothing to do with your actual product. You work out prices with tax, fix product photos so a marketplace accepts them, print labels, and send documents to suppliers and customers. Paid software for each of these adds up quickly.

This guide walks through the free tools on Free Adawat that help with those jobs, with real examples from the kind of day a small seller actually has. Everything runs in your browser. Nothing is uploaded, there is no sign up, and the results are yours to use.

Pricing and tax

Add or remove GST in seconds

Say you sell a product for ₹1,180 including GST at 18%, and a customer asks for the price before tax. Open the GST calculator, choose “remove GST”, enter 1,180 and 18%. You get ₹1,000 as the base price and ₹180 as the tax, split into CGST and SGST for a sale in your own state, or shown as IGST for a sale to another state.

It works the other way too. If a wholesaler quotes ₹850 plus GST at 5%, enter 850, choose “add GST”, and you see the final cost before you agree.

Always check the current rate for your product on the official GST sources listed below. Rates are revised from time to time, and the calculator gives an estimate based on the rate you enter.

Discounts, margins and markups

The percentage calculator answers the questions shop owners ask all the time:

• What is 15% off ₹2,400? Find 15% of 2,400 (₹360) and subtract it: ₹2,040.
• What margin am I making? You buy at ₹600 and sell at ₹750. The change from 600 to 750 is a 25% markup.
• How much did sales grow? Last month ₹48,000, this month ₹54,000. That is a 12.5% increase.

If you sell in the Gulf, the VAT calculator does the same add and remove job for UAE and Saudi VAT.

Product photos

Good photos sell, but marketplaces and WhatsApp catalogues are fussy about size and format. These tools fix most problems in under a minute.

Remove a messy background

You photographed a table lamp on your shop counter and the background shows boxes and wires. The background remover cuts out the product and lets you save it on a clean white background, a colour of your choice, or a transparent PNG. Many marketplaces prefer a plain white background for the main image, so this step alone can make a listing look far more professional.

Crop and resize to the right shape

Most listing platforms want square images. Use image crop to frame the product in a 1:1 square, then photo resize to set exact pixel dimensions, such as 1000 by 1000. Doing this for every product keeps your catalogue neat and consistent.

Make files small enough to upload

A photo straight from a phone camera can be 4 or 5 MB. Websites load slowly with files like that, and some forms reject them. The image compressor lets you pick a target such as 200 KB or 100 KB and shrinks the photo to fit while keeping it sharp. If a site insists on JPG and you have a PNG or WEBP, the image converter switches formats.

QR codes and barcodes

A QR code for your counter

Print a QR code that opens your website, your online store or your WhatsApp chat, and stick it on the counter, your packaging or your visiting card. The QR code generator creates one for a link, a piece of text or a phone number, and you download it as a PNG ready for printing.

A simple example: a bakery prints a QR code on its boxes that opens its order page. Customers scan it at home and reorder without searching.

Barcodes for stock

If you keep your own stock codes, the bulk barcode generator makes hundreds at once from a list or a CSV or Excel file. It supports common formats such as Code128 and EAN-13, and exports either a ZIP of PNG images or an A4 label sheet PDF you can print on sticker paper. For a shop with 300 items, that is an afternoon of work turned into a few minutes.

Documents and PDFs

Combine documents into one file

A supplier asks for your GST certificate, a cancelled cheque and your price list in one email. Use PDF merge to join them into a single PDF in the right order. If some of those are photos taken on your phone, images to PDF turns them into PDF pages first.

Send big PDFs without trouble

Catalogues with many photos get large fast. PDF compress shrinks the file so it fits email limits and opens quickly on a customer’s phone. If you only need to send a few pages, PDF split pulls them out, and PDF rotate fixes scanned pages that came out sideways.

Fill or sign a form

Many registration and supplier forms arrive as PDFs. The PDF editor lets you add text and your signature directly to the page, then save it, without printing and scanning.

A sample weekly routine

Here is how one small seller might use these tools across a normal week:

1. Monday: photograph five new products, remove the backgrounds, crop them square and compress them to about 200 KB each.
2. Tuesday: work out selling prices with the GST calculator and check margins with the percentage calculator.
3. Wednesday: print barcode labels for the new stock with the bulk barcode generator.
4. Thursday: merge the updated price list and product photos into one compressed PDF catalogue for regular customers.
5. Friday: print a fresh QR code for the shop counter that links to the online store.

None of this needs an account, and because the files never leave your device, customer details and supplier prices stay private.

Disclosure

Disclosure: our own brand. Free Adawat is made by Eisa Group, which also runs GreyWings decorative lighting. We mention it here so you know who is behind these tools. The tools themselves are free and do not depend on buying anything.