Encoders And Decoders

An Atbash substitution mirrors characters across an alphabet, so applying it again reverses the transformation. MiniWebtool’s Atbash Cipher Tool lets you choose a variant and case handling, with a character-by-character view of the substitutions.

Read what a Base64 string represents in MiniWebtool’s Base64 Decoder. Standard and URL-safe input can be decoded for text or byte inspection, with encoding choices and output formats to help diagnose data.

MiniWebtool’s Base64 Encoder converts text or files into a text representation of their bytes. Choose an encoding variant and line-break handling, and inspect the encoding breakdown; Base64 represents data rather than encrypting it.

Paste an encoded JSON Web Token into MiniWebtool’s JWT Decoder to view its header, payload claims and expiry time without verifying signatures.

Build an HMAC-signed token for testing with MiniWebtool’s JWT Generator. Configure headers, payload claims, expiration, and an HS256, HS384, or HS512 signing secret, then inspect the token’s three encoded segments.

Turn dots and dashes into readable characters using MiniWebtool’s Morse Code Decoder. A code chart, audio preview, and step-by-step breakdown help you check a message while learning the International Morse Code mappings.

MiniWebtool’s Morse Code Generator converts text into International Morse Code and plays the signal as audio. Character-by-character translations connect the written dots and dashes with the sounds used to transmit them.

Apply ROT13 and related substitution variants with MiniWebtool’s ROT13 Encoder/Decoder. Character mappings and an alphabet wheel illustrate ROT13, ROT5, ROT18, and ROT47; these reversible transformations are for encoding, not secure encryption.

MiniWebtool’s Text to Binary/Hex/ASCII Converter encodes text or decodes numeric codes. Compare formats and per-character values, with UTF-8 support plus separator, padding, and prefix options.

Inspect percent-encoded content with MiniWebtool’s URL Decoder. Decode text, handle optional plus signs, and explore multiple encoding layers, URL components, and query parameters in the resulting string.

MiniWebtool’s URL Encoder converts text for a chosen URL context. Select an encoding mode and inspect the character-level breakdown to see which characters become percent-encoded and how spaces are represented.

Validate UUID strings, normalize GUID formats, and decode UUID v1, v4, and v5 metadata with MiniWebtool’s UUID Validator/Decoder, including timestamp, variant, node, random payload, and v5 namespace/name verification.

Explore a classical cipher with MiniWebtool’s Vigenère Cipher Tool. A keyword controls encryption or decryption, while key alignment, the tabula recta, and variant comparisons explain Vigenère, Autokey, and Beaufort transformations.