Finance
Calculate VAT (Value Added Tax) for purchases and sales
vat-calculatorData Processing
Format and beautify VBA code for better readability
vba-formatterText Processing
Split text into individual words, with each word on a new line
word-separatorCompression
Convert ZIP archive to GZ format (requires 7zip command)
zip-to-gz-converterCompression
Preview contents of ZIP archive without extraction
zip-previewCompression
Extract a single file from ZIP archive by exact path
zip-selective-extractCompression
Convert ZIP archive to 7Z format (requires 7zip command)
zip-to-7z-converterCompression
Convert ZIP archive to TAR format (pure JavaScript, no external dependencies)
zip-to-tar-converterText Processing
Run explainable local tokenization, sentence splitting, stopword, lemma, stem, entity and n-gram annotation with JSONL or CoNLL export.
text-nlp-annotation-workbenchText Processing
Compute MD5, SHA-1, SHA-256, SHA-512, and CRC-32 hashes of any text in one shot. Get both hex and Base64 digests over the UTF-8 encoding.
text-hash-generatorMedia
Detect a loop BPM and time-stretch it to your project tempo — manual BPM or a reference track, with the output BPM re-verified after stretching.
tempo-matcherEducation
Determine genotype (AA vs Aa) by test cross with aa. Any recessive offspring proves heterozygous; zero recessive suggests homozygous with P = 0.5^n. Derived from Mendel 1866, Griffiths, Hartl & Clark 2007, StatPearls. Educational use only.
test-cross-analyzer