YUQI TOOLBOX

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Documents, time, currencies and engineering — one primary place for each tool.

Development & Encoding

Naming converterUse Naming converter to inspect, format or transform developer content locally in the browser. Convert between common code-naming conventions.JSON editorUse JSON editor to inspect, format or transform developer content locally in the browser. Validate and format JSON locally.CSS formatterUse CSS formatter to inspect, format or transform developer content locally in the browser. Apply basic CSS indentation formatting.JSON formatterUse JSON formatter to inspect, format or transform developer content locally in the browser. Format or minify JSON.JavaScript formatterUse JavaScript formatter to inspect, format or transform developer content locally in the browser. Apply basic JavaScript indentation formatting.HTML formatterUse HTML formatter to inspect, format or transform developer content locally in the browser. Apply basic HTML indentation formatting.SQL formatterUse SQL formatter to inspect, format or transform developer content locally in the browser. Apply basic SQL keyword formatting.Regular expression testerUse Regular expression tester to inspect, format or transform developer content locally in the browser. Test regular-expression matches in the browser.Crontab schedule helperUse Crontab schedule helper to inspect, format or transform developer content locally in the browser. Parse common five-field Cron expressions.JSON to TypeScriptUse JSON to TypeScript to inspect, format or transform developer content locally in the browser. Infer basic TypeScript types from JSON.Base64 encoder and decoderUse Base64 encoder and decoder for encoding, hashing or local encryption without uploading text or keys. Encode and decode Base64 locally in the browser.MD5 hashUse MD5 hash for encoding, hashing or local encryption without uploading text or keys. Calculate an MD5 digest locally without uploading input.AES encrypt and decryptUse AES encrypt and decrypt for encoding, hashing or local encryption without uploading text or keys. Encrypt and decrypt locally with Web Crypto AES-GCM.SHA-1 hashUse SHA-1 hash for encoding, hashing or local encryption without uploading text or keys. Calculate a SHA-1 digest locally.ASCII and UnicodeUse ASCII and Unicode for encoding, hashing or local encryption without uploading text or keys. Convert between text and Unicode code-point notation.Full-width and half-widthUse Full-width and half-width for encoding, hashing or local encryption without uploading text or keys. Convert common full-width and half-width characters.URL encoder and decoderUse URL encoder and decoder for encoding, hashing or local encryption without uploading text or keys. Encode and decode URLs locally in the browser.Morse codeUse Morse code for encoding, hashing or local encryption without uploading text or keys. Encode and decode basic Chinese and English Morse representations.Random password generatorUse Random password generator for encoding, hashing or local encryption without uploading text or keys. Generate passwords with browser cryptographic randomness.Random number generatorUse Random number generator for encoding, hashing or local encryption without uploading text or keys. Generate secure random numbers within a range.GUID generatorUse GUID generator for encoding, hashing or local encryption without uploading text or keys. Generate UUIDs or GUIDs locally in the browser.JWT DecoderDecode JWT headers and payloads locally and inspect common timestamp claims. Decoding does not verify the signature.YAML Formatter & ConverterFormat and validate YAML locally and convert between YAML and JSON.XML Formatter & ConverterFormat and validate XML locally and convert to/from JSON with explicit attribute, text and repeated-node rules.CSV Viewer & ConverterView CSV tables in the browser and convert to/from JSON arrays with common delimiters.Text DiffCompare two texts line by line and mark additions, deletions and changes; this is not a similarity score.JSON DiffCompare JSON structures by key path while preserving array order semantics by default.Markdown Live PreviewEdit and preview Markdown locally without executing scripts from the input; HTML output is sanitized before copying.SemVer ComparatorCompare semantic versions, prereleases and common version ranges.MIME Type LookupLook up common extension/MIME mappings. A mapping does not prove a file’s actual content.File Signature DetectorInspect local file signatures and compare filename extension, browser MIME and detected type without uploading the file.Punycode / IDN ConverterConvert Unicode domains to/from ASCII/Punycode and flag possible confusable characters without claiming security verification.HTML Entity Encoder & DecoderConvert locally between plain text and common named or numeric HTML entities.X.509 / CSR ParserParse PEM certificates and CSRs locally for subject, issuer, SANs, validity, algorithms and fingerprints; private keys are not accepted.SHA-2 / HMAC / File ChecksumUse browser Web Crypto for SHA-256/384/512, HMAC and file digests without uploading content or keys.