Encoding & Crypto — Guides & Articles

• Strict UTF-8 Encoder / Decoder: Hex, Decimal, and Binary Bytes

  Published 2026-09-25

  A strict UTF-8 encoder / decoder that fails on malformed bytes instead of substituting replacement characters. Convert between Unicode text and hex,…

  

• Best Website Format for URLs: Component vs Full Mode

  Published 2026-09-25

  Find the best website format for URLs. Compare component vs full URL mode, see which characters to escape, and ship clean percent-encoded addresses.

  

• Char Code Lookup for Large Text: Handle Every Code Point

  Published 2026-09-25

  A browser-based char code lookup for large text returns one U+ label per scalar value and decodes tokens back, including multi-code-point emoji, locally.

  

• Text to Hex Explained: How UTF-8 Bytes Become Hex Pairs

  Published 2026-09-25

  Text to hex explained in plain English: how UTF-8 bytes become 2-digit hex pairs, why no BOM is added, and what replacement warnings mean for clean round trips.

  

• Text to Binary: Why One Character Isn't Always 8 Bits

  Published 2026-09-25

  Why one character doesn't always become 8 bits when you convert text to binary: a byte-exact UTF-8 converter for ASCII, accents, CJK, and emoji, processed…

  

• Generate a SHA-512 Hash With Salt in Your Browser

  Published 2026-09-25

  Generate a SHA-512 hash with salt directly in your browser. See when salt matters, how to concatenate it correctly, and why raw SHA-512 fails for password…

  

• Generate a SHA 256 Hash of a File in Your Browser

  Published 2026-09-25

  Generate a SHA 256 hash of a file in your browser without uploading. The 64-character Hex digest plus Base64 covers up to 100 MB of file content.

  

• Get a SHA-1 Hash: Text vs File, Hex vs Base64

  Published 2026-09-24

  Get a SHA-1 hash from UTF-8 text or a file up to 100 MB. The browser computes the 160-bit digest locally as lowercase Hex or standard Base64.

  

• Generate RSA Key for Bitbucket: Browser-Based PEM Method

  Published 2026-09-24

  Generate an RSA key pair for Bitbucket in your browser using RSA Key Generator. Produce 2048- or 3072-bit RSA-OAEP PEM keys locally with no upload.

  

• How Do You Use a ROT47 Encoder Decoder Correctly?

  Published 2026-09-24

  Use a ROT47 encoder decoder correctly by preserving spaces and non-ASCII, verifying the self-inverse property, and checking for output errors.