Fineuralab

Developer Tools

Utilities for API debugging, tokens, URLs, hashes, Unicode, MIME types, and status codes.

Developer Tools

Utilities for API debugging, tokens, URLs, hashes, Unicode, MIME types, and status codes.

中文：开发者工具。

Hash DigestCalculate SHA-256, SHA-384, and SHA-512 digests as hex or Base64. URL Encoder DecoderEncode, decode, and parse URLs with query parameter inspection. JWT DecoderDecode JWT header and payload locally without verifying the signature. Regex TesterTest regular expressions, highlight matches, and copy match lists. UUID & Random GeneratorGenerate UUIDs, random integers, and random strings with selectable character sets. Unicode InspectorInspect characters, Unicode code points, decimal values, UTF-8 bytes, and HTML entities. HTTP Status CodesLook up common HTTP status code names and meanings for API debugging. MIME Type LookupFind common Content-Type values by file extension, or extensions by MIME type. URL Query BuilderBuild, encode, and parse URL query parameters for campaigns, APIs, search, and redirects.