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Amazon Flat File Validator
or drop files here .csv, .txt, .tsv, .xls, .xlsx, .xlsm (up to 50 MB)
Free 5-row preview · Most files ~$5 · No sign-up required
Invoice import blocked if Sales Tax enabled in QBO
Validate Complete
Your converted file is ready!
Download now before closing this page
Validation Report Format
Showing valid rows only (download includes all rows + errors)
All rows valid
| $ |
|---|
+ more rows
valid rows
invalid rows skipped from preview
credits
| Row | Column | Value | Error |
|---|---|---|---|
Showing first 50 errors. more errors not shown.
more errors hidden. Download the full validation report to see all errors.
Validation Report Download
The download includes your original file with an added "Validation Error" column showing error messages for each row. Valid rows have an empty error column.
• credits
Use credits to download
Click any download button to use your credits
- Full CSV & Excel export
- Google Sheets export
- Instant browser download
for credits
One-time payment
256-bit SSL encryption
14-day money-back guarantee
PCI DSS compliant
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Buy bundles and get up to 27% off. Perfect for recurring monthly conversions.
// PRICING //
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Pay as you go
Just start processing on any tool page
$1/credit
Tools processing starts from 5 credits. Then 1 credit = 1k rows. No sign-up needed.
OR
Monthly Bundles Pro
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/Credit
Best for professionals and content creators
Annual Discount
Per month, billed annually:
Save 20% more
- Credits refresh monthly
- Priority processing
Purchase Credits
- Full CSV & Excel export
- Google Sheets export
- Instant browser download
for credits
256-bit SSL encryption
14-day money-back guarantee
PCI DSS compliant
Powered by Paddle
Do unused credits expire?
Do unused credits expire?
One-time credit bundles are valid for one year. Subscription credits refresh monthly. You can use credits across any tool, anytime.
Is my data secure?
Files process entirely in your browser. We're GDPR compliant with TLS encryption.
Can I get a refund?
Yes! Full refund within 14 days if no credits used. Partial refund for unused credits anytime. Contact sup@spreadsheetbroccoli.com.
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Terms of service applies. VAT included where applicable.
What Our Users Say
Been searching for something like this for months. Our Shopify store processes 500+ orders monthly and this handles everything perfectly. Date formats, tax columns, refunds - all correct.
works good, wish it had batch mode
I was spending 4-5 hours every month reformatting exports manually. This tool paid for itself in the first use. The preview feature helped me verify the mapping before paying.
exactly what i needed thx!!
Super straightforward. Upload, convert, download. No account needed which is nice. Would give 5 stars if they add Xero support.
saved me hours of work
My accountant was so happy when I sent her the converted file. No more back-and-forth about date formats or missing columns. Everything imported correctly on first try.
fast and easy 10/10 would recommend
Been using this for 6 months for monthly reconciliations. Handles all the edge cases - partial refunds, multi-line orders, currency conversions. Very reliable tool.
Good tool, does what it says. Interface could be bit better but conversion quality is excellent. Using it for my 3 Shopify stores.
Switched from A2X to this. Way simpler for my needs - I don't need real-time sync, just clean data once a month. This delivers exactly that.
finally!! something that works with QB desktop!!
// PRICING //
Need more credits?
Pay as you go
Just start processing on any tool page
$1/credit
Tools processing starts from 5 credits. Then 1 credit = 1k rows. No sign-up needed.
OR
Credit Bundles
$
/Credit
One-time purchase
- No monthly commitment
- Credits valid for one year
- Access to all tools
- Full file downloads
Monthly Bundles Pro
$
/Credit
Best for professionals and content creators
Annual Discount
Per month, billed annually:
Save 20% more
- Credits refresh monthly
- Priority processing
Purchase Credits
- Full CSV & Excel export
- Google Sheets export
- Instant browser download
for credits
256-bit SSL encryption
14-day money-back guarantee
PCI DSS compliant
Powered by Paddle
Do unused credits expire?
One-time credit bundles are valid for one year. Subscription credits refresh monthly. You can use credits across any tool, anytime.
Is my data secure?
Files process entirely in your browser. We're GDPR compliant with TLS encryption.
Can I get a refund?
Yes! Full refund within 14 days if no credits used. Partial refund for unused credits anytime. Contact sup@spreadsheetbroccoli.com.
Powered by
Paddle
Terms of service applies. VAT included where applicable.
Liked the preview?
Upload your actual file to get the real conversion
Check your Amazon flat file template for missing columns, data errors, and formatting issues before uploading to Seller Central.
Starting from $5 — see pricing & bundles
Free preview before you pay
Files never leave your browser
No account needed to start
How It Works
1
Download Flat File Template
Seller Central → Inventory → Add Products via Upload → Download Template
2
Upload CSV
Upload your Generic Flat File export file
3
Review Validation Results
Check your Amazon Seller data for errors and warnings
Output is in Validation Report format — ready to import directly, no manual reformatting needed.
Quick Answers
What flat file formats are supported?
CSV, TSV (tab-separated), and Excel files (.xls, .xlsx). Amazon flat files are typically tab-delimited .txt files which this tool also accepts.
Is this tool free?
First rows are free to preview. Full validation uses credits based on row count.
What happens to my data?
Your file is processed entirely in your browser. No data is uploaded to our servers.
Why Validate Flat Files?
Avoid Upload Rejections
Amazon rejects flat file uploads with missing required fields, invalid values, or formatting issues. Debugging rejections in Seller Central is slow and the error messages are often cryptic.
This validator checks your flat file before upload, catching errors you can fix immediately rather than waiting for Amazon's processing queue.
What This Tool Checks
We validate your flat file against Amazon's expected schema:
- Required fields present (item_sku, item_name, brand_name, standard_price)
- Data types correct (prices numeric, quantities integer)
- Enum values valid (condition_type, fulfillment_channel)
- Image URLs properly formatted
You get a detailed error report with row numbers.
Your Data is Safe
Bank-Level Security
256-bit SSL encryption. Same standards as major financial institutions.
No Data Storage
Files are processed directly in browser. No calls to our servers.
GDPR Compliant
Full EU data protection compliance. Your privacy rights protected.
Why Use This Tool?
Required Field Check
Validates required columns like item_sku, item_name, brand_name, and standard_price.
Data Type Validation
Checks prices are numeric, quantities are integers, and enum values match Amazon's allowed values.
Row-Level Errors
Get specific error messages with row numbers for quick debugging before upload.
Image URL Checking
Validates that image URLs are properly formatted HTTPS URLs.
Browser-Based
Files processed locally. Your product data never leaves your computer.
Instant Results
Get validation results in seconds, even for large product catalogs.
Common Target Import Errors
Issues you might encounter when importing Source data to Target - and how we solve them
Missing Item SKU
The 'item_sku' column is required as the unique product identifier
(blank or missing item_sku)
PROD-001-BLK
Every product must have a unique SKU
Add a unique SKU identifier for each product row
Missing Item Name
The 'item_name' column is required for the product title
(blank item_name)
Premium Wireless Bluetooth Headphones - Black
Product title is required for listing creation (max 200 chars)
Add descriptive product titles following Amazon's style guide
Missing Brand Name
The 'brand_name' column is required for most categories
(blank brand_name)
TechBrand
Brand name must match your Brand Registry enrollment
Add your registered brand name to each product
Invalid Price
The 'standard_price' column contains non-numeric or negative values
TBD or -10.00
49.99
Price must be a positive number
Check for placeholder prices or data entry errors
Invalid Quantity
The 'quantity' column contains non-integer or negative values
-5 or 10.5
100
Quantity must be a non-negative integer
Review inventory levels and ensure whole numbers
Invalid Image URL
Image URL must be a valid HTTPS URL
C:\photos\image.jpg
https://example.com/images/product.jpg
Use publicly accessible HTTPS URLs for all images
Upload images to a hosting service first
Missing Bullet Points
No bullet points provided (recommended 3-5)
(all bullet_point columns blank)
bullet_point1: 'Key feature description'
Bullet points improve listing quality and conversion rate
Add at least 3 feature bullet points per product
Invalid Product ID Type
The 'external_product_id_type' value is not recognized
barcode or code
UPC, EAN, ISBN, ASIN, GTIN
Use one of Amazon's recognized ID types
Valid types: UPC, EAN, ISBN, ASIN, GTIN
More credits - more savings
Buy bundles and get up to 60% off. Perfect for recurring monthly conversions.
// PRICING //
Choose the plan that fits your needs
Pay as you go
Just start processing on any tool page
$1/credit
Tools processing starts from 5 credits. Then 1 credit = 1k rows. No sign-up needed.
OR
Credit Bundles
$
/Credit
One-time purchase
- No monthly commitment
- Credits valid for one year
- Access to all tools
- Full file downloads
Monthly Bundles Pro
$
/Credit
Best for professionals and content creators
Annual Discount
Per month, billed annually:
Save 20% more
- Credits refresh monthly
- Priority processing
Purchase Credits
- Full CSV & Excel export
- Google Sheets export
- Instant browser download
for credits
256-bit SSL encryption
14-day money-back guarantee
PCI DSS compliant
Powered by Paddle
Do unused credits expire?
One-time credit bundles are valid for one year. Subscription credits refresh monthly. You can use credits across any tool, anytime.
Is my data secure?
Files process entirely in your browser. We're GDPR compliant with TLS encryption.
Can I get a refund?
Yes! Full refund within 14 days if no credits used. Partial refund for unused credits anytime. Contact sup@spreadsheetbroccoli.com.
Powered by
Paddle
Terms of service applies. VAT included where applicable.
Frequently Asked Questions
Your data never leaves your device. All files are processed entirely in your browser using client-side JavaScript - no data is stored on our servers or sent anywhere. There's no account to hack, no database storing your files, and no API connections to your bank or accounting software. You upload, convert, download, and we forget it immediately.
No payment or signup required. You can upload your file, see a free preview of the conversion results, and verify everything looks correct before paying anything. If it doesn't work for your files, you haven't wasted any money. We only charge when you're satisfied and ready to download the final converted file.
You can, but free scripts and AI often miss edge cases that break real-world data: missing SKUs, currency formatting quirks, tax calculation errors, or date format mismatches. We have battle-tested validators specifically designed for accounting software imports that catch these issues before they corrupt your books. Plus, you get instant browser-based conversion without installing Python or managing dependencies.
CSV, TSV (tab-separated), and Excel files (.xls, .xlsx). Amazon flat files are typically tab-delimited .txt files which this tool also accepts.
Required fields for the generic template: item_sku, item_name, brand_name, standard_price, and quantity. Category-specific templates may require additional fields.
This is the generic/universal validator. For category-specific validation (Clothing, Electronics, Home, Beauty), use our dedicated category validators that check additional required fields.
First rows are free to preview. Full validation uses credits based on row count.
Valid condition types: New, Refurbished, UsedLikeNew, UsedVeryGood, UsedGood, UsedAcceptable.
Your file is processed entirely in your browser. No data is uploaded to our servers.
Download the error report which shows each error with row number and column. Fix the issues in your flat file and re-validate before uploading to Seller Central.
Yes. Validating before upload is recommended to avoid rejection delays. Amazon's processing queue can take hours, so catching errors upfront saves significant time.
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