Base64 / Hash Toolbox

Base64 / Hash Toolbox is a fast, no-nonsense developer utility for everyday encoding and hashing tasks. All conversions run 100% on your device — your text and files are processed locally and never uploaded.

▍BASE64

• Encode and decode UTF-8 text in real time as you type

• Standard and URL-safe alphabets

• Whitespace-tolerant decoding (paste freely)

• Smart auto-detect: paste a Base64-looking string and the app suggests "Decode?" with one tap

▍HASH

• MD5, SHA-1, SHA-256, SHA-512

• Lowercase or uppercase hex output

• Instant digests as you type

▍FILES

• Pick any file to Base64-encode or hash it

• Large files are streamed efficiently in the background — no freezing, no memory blow-ups

▍HISTORY, FAVORITES & STATS

• Every conversion you save is kept locally (most recent 50)

• Tap an entry to instantly reuse its settings and input

• Star the ones you use often and filter to favorites

• See running per-tool counts at a glance

• "Clear all" keeps your favorites safe

▍POLISHED EXPERIENCE

• Clean Material 3 interface with dynamic color (Android 12+)

• Light and dark themes

• English and Korean

• One-tap copy and share for any result

• Your text and options are restored even after the app is closed

▍PRIVACY & ADS

• Your conversion data stays on your device — nothing is sent to a server

• The app is ad-supported: it shows a banner and an occasional app-open ad, which require a network connection

• Prefer an ad-free experience? A one-time "Remove ads" in-app purchase removes all ads for good

Perfect for developers, QA engineers, students, and anyone who regularly works with Base64 strings or cryptographic checksums. Lightweight, instant, and easy to use.