Encoding & Crypto — Guides & Articles

• Is a ROT13 Encoder Decoder Safe to Use Online?

  Published 2026-08-03

  A ROT13 encoder decoder is safe for casual obfuscation only - it runs in your browser without uploading, but it is not real encryption.

  

• How to Decode a Rail Fence Cipher Without Losing Spaces

  Published 2026-08-03

  Decode a Rail Fence cipher in your browser with a tool that preserves spaces, punctuation, emoji, and every Unicode code point across 2 to 100 rails.

  

• Convert Emoji to Punycode for IDN Domain Labels

  Published 2026-08-03

  Convert emoji to Punycode for IDN domain names. Encode Unicode labels to DNS-safe xn-- ASCII or decode them back, fully browser-side.

  

• Check Office 365 Password Strength Before You Submit It

  Published 2026-08-03

  Run a local password complexity review before setting a Microsoft 365 sign-in secret. See what the Office 365 password rules actually check and what they don't.

  

• How to Translate Morse Code From a Video Step by Step

  Published 2026-08-02

  Translate Morse code from a video by transcribing the dots and dashes you hear or see, then decoding them with a free browser-based Morse translator.

  

• Generate an HMAC Secret Key and Tag in Java

  Published 2026-08-02

  Generate an HMAC secret key and produce HMAC-SHA-256, SHA-384 and SHA-512 tags in Java, then verify them with a browser-based HMAC generator.

  

• How to Convert Hex to Readable Text: Plain and 0xNN

  Published 2026-08-02

  Convert hex to readable text using plain groups, ASCII whitespace separators, or exact 0xNN byte tokens. Strict fatal UTF-8 decoding, no silent replacements.

  

• Gzcompress Online Bulk: Compress UTF-8 Text in Batches

  Published 2026-08-02

  Compress many UTF-8 text lines in bulk with an online gzcompress workflow that produces Base64-wrapped RFC 1952 gzip bytes you can paste anywhere.

  

• How to Generate CRC32 From Text or Hex Bytes

  Published 2026-08-01

  Generate CRC32 the right way: confirm the variant, choose UTF-8 or hex input, calculate, and compare the full eight-digit result.

  

• How to Calculate a Checksum Digit in GST Frames

  Published 2026-08-01

  Formulas and byte ranges for the trailing checksum digit in GST-style frames, covering XOR-8 BCC, Modbus ASCII LRC, and a byte-sum modulo 256.