All-in-One Developer Toolbox
Client-side computing · No intrusive ads · Bilingual · No signup required
36 tools
100% Local Computing
Every tool runs inside your browser. Input and results are never uploaded.
Instant Results
Output updates as you type — no network round trip, no waiting.
Bilingual
Each tool has its own Chinese and English page, fully localized.
Clean & Ad-light
No pop-ups, no interstitials, ads never cover input or results.
Popular tools
JSON Formatter & MinifierFormat, beautify and minify JSON online. Custom indeBase64 Encode / DecodeFree online Base64 encoder and decoder with full UTFJWT DecoderFree online JWT (JSON Web Token) decoder. Splits heaHash Generator (MD5 / SHA / SM3)Free online hash and digest generator for MD5, SHA1,Unix Timestamp ConverterConvert Unix timestamps to dates and back. Auto-deteUUID & ULID GeneratorGenerate UUID v4, v7 and v1 plus ULID online. Batch URL Encoder / DecoderFree online URL encoder and decoder. Choose encodeURRegex TesterFree online regex tester. Live match highlighting, cAES Encrypt / DecryptFree online AES symmetric encryption with CBC/ECB/CFRandom Password GeneratorGenerate strong random passwords and strings online.QR Code GeneratorGenerate QR codes online for text, URLs, WiFi and vCCase ConverterConvert any string into 11 naming styles at once: ca
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