Free Tools
13 practical utilities for Amazon sellers. Free to use, no registration required.
Amazon Tools
ASIN Extractor
Extract ASINs from URLs or text in bulk with automatic deduplication.
Bulk extractAuto dedupExport CSV
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Title Optimizer
Check title length limits and improve structure for better relevance and CTR.
Limit checksStructure tipsCopy-ready output
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Long-tail Generator
Generate long-tail keyword combinations to expand coverage and discover demand.
Smart combineBulk generateExport list
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FBA Profit Calculator (by marketplace)
Per-marketplace profit, fee tax and break-even ACOS in local currency.
15 marketplacesLocal currency & taxBreak-even ACOS
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Text Tools
Word Frequency
Analyze word and phrase frequency to optimize keyword placement in listings.
Words & phrasesStop-word filterExport results
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Text Deduplication
Remove duplicates by line or comma in seconds. Keep order, reduce noise.
Line or commaPreserve orderOne-click copy
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Case Converter
Convert text case instantly: upper, lower, title case, sentence case, and more.
Multiple modesLive previewOne-click copy
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SATLIS Basic
JSON Formatter
Format, minify, and validate JSON with error hints and readable output.
Format & minifyValidate JSONCopy output
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CSV Converter
Convert between CSV and JSON/TSV quickly with preview and custom delimiters.
Multi-formatBatch convertPreview
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Batch Replace
Batch replace text with multiple rules. Supports regex for power users.
Regex supportMultiple rulesLive preview
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Text Diff
Compare two texts and highlight added, removed, and changed parts.
Line diffWord diffHighlight changes
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Business Tools
FBA Profit Calculator
Estimate profit with cost breakdown and ROI metrics for pricing decisions.
Cost breakdownROI metricsExport summary
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Unit Converter
Convert common units (length, weight, temperature, area) with precision.
Common unitsAccurate resultsQuick lookup
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Timezone Converter
Convert time across major timezones for global launches and collaboration.
Major citiesCustom timeQuick compare
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