Text Processing
Quickly swap pairs of adjacent words in text
text-word-swapperUtilities
Convert file encoding with auto-detection support between UTF-8, GBK, ISO-8859-1 and other character encodings
file-encoding-converterUtilities
Calculate MD5/SHA1/SHA256 hash values for files and verify against expected hashes
file-hash-verifierMath & Numbers
Convert between Arabic numbers and Roman numerals with validation and detailed results
roman-numeral-converterUtilities
Comprehensive analysis of text files including statistics, encoding, line counts, and content patterns
text-file-analyzerUtilities
Find and replace text in files with support for regex, multiple patterns, and backup creation
text-file-replacerUtilities
Search for text patterns in files with advanced options (regex, case-sensitive, whole word, etc.)
text-file-searcherText Processing
Calculate similarity percentage between two texts using multiple algorithms including Cosine Similarity, Jaccard Similarity, and Levenshtein Distance
text-similarity-detectorUtilities
Convert time between different time zones around the world
time-zone-converterDevelopment
Validate UUID format, detect version, and analyze UUID structure including variant, timestamp, and node information
uuid-validatorUtilities
Calculate working days between two dates, excluding weekends and holidays
working-days-calculatorHealth
Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds to reduce eye strain
eye-care-20-20-20