Which marketplaces can it read?

Amazon, Flipkart, Meesho and Myntra, from their standard exports. A register or any other file needs the app, where you map its columns once.

Which files does each marketplace give?

Amazon: the MTR B2C and MTR B2B reports, as the zips they download as. Flipkart: the Sales Report, and the Report for GSTR-1 and GSTR-8 Return Filing. Meesho: the GST report zip and the tax invoice zip. Myntra: the three GSTR report CSVs, packed, RT and RTO; they carry no HSN code, so the app asks for one per article type, once.

Can I download the JSON here?

Not on this page. The JSON is on the free plan: sign up, drop the same files, and download it once no blocker remains. Then upload it on the GST portal under GSTR-1, Prepare offline, check the summary, and file with your DSC or EVC.

What about photographs and PDFs of bills?

They need a reader that runs on a server, so this page names them and leaves them out. The app reads them, and a person confirms what was read before it counts.

fynxIQ

Drop a month. See the return and every check.

Files are identified from their headings, never their names, and read by the reader written for each marketplace. Run the sample month to watch a blocker surface.

Updated 23 September 2026

Read: Filing GSTR-1 as an Amazon seller, without guessing · Table 13: what counts as a document issued · Filing GSTR-1 as a Meesho seller · Filing GSTR-1 as a Flipkart seller · Why a B2CS row can legitimately be negative · Filing GSTR-1 as a Myntra seller

For: Amazon · Flipkart · Meesho · Myntra

↓Drop the month’s filesAmazon, Flipkart, Meesho or Myntra exports. Read here, sent nowhere.

Kalanidhi JewelsGSTR-1, July 2026 · sample month, as the app reads itWaiting for files

Files

Checks

Your return

JSON

Taxable value

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Tax

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Invoices

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×KJ-103 differs between the register and the billRegister row 4, Bill-KJ-103.jpg

!3 rows read through your column mappingSales register July.xlsx

✓Amazon’s TCS figure agrees, to the paisa29DEMOA1234A1Z4_JUL_2026.xlsx

✓HSN summary equals sales, to the paisaTables 4 to 9 against Table 12

In the app, the same month also takes your Excel register, photographed bills and the portal’s TCS statement, in one ledger.Start free →

How to use it

Three steps, and nothing leaves the page.

01Download the month’s reports from each marketplace. Which file to download lists the menu path.
02Drop them here together, zips included. Each is recognised from its headings.
03Read the checks. The JSON itself comes from the app, free for 2 GSTINs: drop the same files there.

What it checks

Each rule, and what it does when it fails.

BlockerTwo copies of one invoice that disagree

BlockerTable 12 against Tables 4 to 9, to the paisa

BlockerA missing second file, such as Meesho’s invoice numbers

WarningA buyer GSTIN that fails its check digit, moved to B2C

PassesEach marketplace’s TCS figure against your sales, when you add the statement

What every check rests on

Questions

About the GSTR-1 converter.

Something else? Read every answer, or write to us.

No. They are read in this page, in your browser. Close the tab and they are gone.

The other free tools

All free tools

02GSTR-1 JSON validatorHold a JSON from any product against the offline tool’s rules and the Table 12 cross-tally before you upload it.03HSN code checkerWhether a code can exist, how many digits Table 12 needs from you, and the rate on file, with what is not known said plainly.04GST late fee calculatorThe late fee on a GSTR-1, GSTR-3B, GSTR-4, GSTR-7 or GSTR-8 from the due date and the filing date, with the caps in force and the three-year bar.05TCS calculator for sellersWhat a marketplace should collect under section 52 on a month’s net sales, by tax head, against what the portal shows.06GSTIN checkerWhether a GSTIN is well formed and its check digit matches, with the state and PAN it carries.

Do the whole month in fynxIQ.

This check and every other, on every return, with the GSTR-2B, the GSTR-3B draft and Tally. Free for 2 GSTINs and 6 prepared returns a month.

Start free