驗證與檢查碼
Validate IBAN, BIC, ISBN, EAN/UPC, VIN, card numbers, LEI and other check-digit identifiers locally.
Card 數字驗證器Validate a card or IMEI with the Luhn algorithm, detect the brand and derive the missing check digit.ISBN 驗證器Check ISBN-10 and ISBN-13 check digits and compute the correct one for a truncated ISBN.Barcode Check Digit 驗證器Validate EAN-8, EAN-13, UPC-A and ITF-14 barcodes and see the weighted sum step by step.IBAN 驗證器Validate an IBAN with MOD-97, check the national length and show the rearranged calculation.SWIFT BIC 驗證器Check an ISO 9362 BIC and split it into institution, country, location and branch codes.VIN 檢查器Validate a 17-character vehicle VIN check digit and decode region, year and plant positions.Mod-11 Check Digit 驗證器Validate ISSN, ISMN, ORCID and other mod-11 identifiers, with the weighted sum shown.LEI 驗證器Validate an ISO 17442 Legal Entity Identifier with the ISO 7064 MOD 97-10 scheme.Verhoeff Check 驗證器Apply the Verhoeff dihedral-group checksum that catches all single-digit and all transposition errors.Damm Check 驗證器Run the Damm quasigroup checksum, which detects every single-digit error and adjacent transposition.Latitude Longitude 轉換器Convert between decimal degrees and degrees-minutes-seconds, with hemisphere and UTM zone hints.CaretM-decodeDecodes caret or M-encoded strings, i.e. ^M turns into a newline, M-^] turns into 0x9d. Sources such as `cat -v`. Please be aware that when using `cat -v` ^_ (caret-underscore) will not be encoded, but represents a valid encoding (namely thFletcher-16 檢查碼The Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties Fletcher-32 檢查碼The Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties Fletcher-64 檢查碼The Fletcher checksum is an algorithm for computing a position-dependent checksum devised by John Gould Fletcher at Lawrence Livermore Labs in the late 1970s. The objective of the Fletcher checksum was to provide error-detection properties