XHelper: Developer Toolkit

XHelper is a fast, private toolkit for the small conversions developers do all day. Paste anything and XHelper recognizes it — a JWT, JSON, a Unix timestamp, a UUID, a URL, a color, a number, or Base64 — and opens the right tool with your input already filled in. ENCODING • Base64 — Encode and decode text and files, with a URL-safe option and image previews for decoded data. • URL — Percent-encode and decode, and see every part of a URL plus its query parameters. • JWT — Decode the header, payload and claims, see when a token expires, and verify HS256, HS384 and HS512 signatures. HASH • MD5, SHA-1, SHA-256, SHA-384 and SHA-512 for text or files, with optional HMAC. Large files are hashed in chunks. FORMAT • JSON — Pretty-print with 2 spaces, 4 spaces or tabs, minify, sort keys, and get errors with the exact line and column. GENERATE • UUID — Create v4 or time-ordered v7 UUIDs in batches, with uppercase, hyphen and brace options. Inspect any UUID, including the timestamp inside a v7. CONVERT • Epoch — Unix timestamps in seconds, milliseconds, microseconds or nanoseconds to UTC, local time, ISO 8601 and relative dates, and back again. • Number Base — Binary, octal, decimal and hex, including negative numbers. • Color — Hex, RGB and HSL, plus ready-to-paste SwiftUI, UIKit and AppKit code. TEXT • Regex Tester — Live match highlighting, capture groups and flags. • Text Diff — Compare two blocks of text line by line. • Text Tools — camelCase, snake_case, kebab-case and more; sort, reverse and de-duplicate lines; count characters, words, lines and bytes. WORKS EVERYWHERE • Shortcuts, Siri and Spotlight — Encode and decode Base64 and URLs, hash text, format JSON, decode JWTs, generate UUIDs, convert timestamps and change case without opening the app. • Mac Services — Select text in any Mac app and use Services → XHelper to encode, decode, format JSON or change case in place. • A native app for Mac, iPhone and iPad, with a searchable sidebar and keyboard shortcuts on Mac. PRIVATE BY DESIGN XHelper works completely offline. Nothing you paste ever leaves your device, and there's no tracking of any kind.