Base64 Encode Decode Offline vs DevKit

Paste a Base64 string, tap once, read the answer — right on your iPhone, fully offline. No web converter, no upload, no wondering who just logged the token you pasted. Base64 Encode Decode Offline is a developer scratchpad built for the real thing you paste: blobs copied out of logs and terminals. The decoder tolerates URL-safe alphabets, missing padding and line-wrapped copy-paste, auto-detects whether you meant encode or decode, and refuses garbage instead of returning silent nonsense. URL decoding is byte-accurate, so a leading BOM or odd byte is preserved instead of being quietly eaten. Everything renders in a proper monospaced font. WHAT YOU GET • A wrapped, unpadded, URL-safe Base64 blob from a log file still decodes cleanly — whitespace, CRLF and base64url handled for you • Paste a JWT and read its pretty-printed header and payload immediately — the signature never touches a server • One input, four digests: MD5, SHA-1, SHA-256 and SHA-512 update as you type, with one button to copy all four • URL-encode a query value and the &, =, + and # characters that break query strings are actually escaped • Turn any file into Base64 or a ready-to-embed data URI with the correct MIME type — and turn Base64 back into a file • The String Inspector shows characters, UTF-8 / UTF-16 / UTF-32 byte counts, words and lines the moment text is entered PERFECT FOR • Backend and mobile developers debugging an API payload away from the laptop • QA engineers inspecting auth tokens without pasting credentials into a website • Sysadmins decoding config blobs and verifying checksums from a phone session • Students seeing exactly how encodings and hash digests behave WHY NOT JUST USE A WEB CONVERTER? Because every online encode/decode tool receives your string on its server — and the strings developers convert are exactly the ones that should never leave the machine: session tokens, API keys, connection strings, JWTs. This app does all conversion and hashing on the device with Apple's CryptoKit. It works in airplane mode. PRIVATE BY DEFAULT No accounts, no tracking of your content, no network needed to convert. Your inputs and your conversion history are stored only on your iPhone. FULL ACCESS Pro unlocks unlimited saved conversions, file conversion beyond 5 MB in both directions, and Batch mode to convert many lines in one pass. Full access is available as a weekly subscription, a yearly subscription, or a one-time lifetime purchase. Decode that string before the next station — download Base64 Encode Decode Offline. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia

DevKit is the developer toolbox you already keep open in a browser tab, rebuilt as a native app for iPhone, iPad and Mac — and it works with the radio off. Paste something and DevKit works out what it is. A JSON Web Token, a certificate, a cron line, a CIDR block, a colour, a hex digest: it recognises the shape and offers the right tool. WHAT YOU GET FREE • JSON Format — pretty-print, minify and validate, keeping your key order and number literals • JWT Decode — header, claims and expiry, with optional HMAC verification • Base64 — standard and URL-safe, padded or not • URL Encode — query, form and path semantics • Regex Tester — matches, capture groups, named groups, replace and split • Hash — MD5, SHA-1, SHA-256, SHA-384, SHA-512 • UUID Generate — version 4 and time-ordered version 7, in bulk • Unix Time — epoch seconds, milliseconds, microseconds and nanoseconds, any time zone • Colour Convert — HEX, RGB, HSL, HSB, CMYK, with WCAG contrast ratios • String Case — camel, snake, kebab, Pascal and eight more, all at once • Number Base — binary, octal, decimal, hex and any base from 2 to 36, with a bit view • Text Diff — line-by-line comparison with counts WHAT PRO ADDS All 42 tools, including YAML ↔ JSON, XML ↔ JSON, CSV ↔ JSON, HTML entities, string escaping for six languages, ULID and NanoID, HMAC, PBKDF2 calibration, a cron parser that tells you the next ten runs, JSONPath with jq-style pipes, a SQL formatter, native Markdown preview, an offline HTML preview, X.509 certificate decoding, RSA and EC key inspection, QR generation and scanning, lorem ipsum, text statistics, slugify, chmod, IP and CIDR maths, MIME lookup, HTTP status reference, Unicode inspection, seeded sample data, time-zone conversion, semver comparison, URL parsing, a query-string builder and a searchable git command reference. Pro also unlocks unlimited history, iCloud sync of your favourites and history, Home Screen widgets, and the share extension. BUILT FOR HOW YOU WORK • Every tool is a Shortcuts action, so you can compose them into automations • Send selected text straight to DevKit from any app, or from the Services menu on a Mac • Search and keyboard shortcuts on iPad and Mac, and a menu bar popover on macOS • Favourites, history and drafts that pick up where you left off PRIVACY, PLAINLY DevKit makes no network requests. It has no account, no analytics and no third-party SDKs. Everything you paste is processed on your device. History is stored locally, you can turn off saving previews, and you can erase everything from Settings. One purchase covers your iPhone, iPad and Mac. TERMS AND PRIVACY Terms of Use: https://devkit.eonix.lk/terms Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://devkit.eonix.lk/privacy