Encoding Tools for Bytes, URLs, Unicode, and Markup
Encoding changes how information is represented. The difficult part is rarely pressing “encode” or “decode”; it is knowing whether the input is text or bytes, which alphabet or escaping rules apply, and what the surrounding format will do with reserved characters.
Choose the Layer Before the Codec
Bytes → restricted text: Base64, Base32, Base58, hex, and octal represent byte sequences with different alphabets and canonical rules.
Text → escaped syntax: Unicode escapes, JavaScript-style escapes, HTML or XML entities, and shell quoting protect text inside another grammar.
URL components: complete URLs, path segments, query values, and form data do not apply percent encoding or plus-sign handling identically.
Email transport: MIME encoded-words belong in headers, while quoted-printable and Base64 transfer encodings describe message-body bytes.
International identifiers: Punycode represents internationalized domain labels in an ASCII-compatible form; it is not a general-purpose text encoder.
Not a secrecy layer: Base64, hex, entities, escapes, QR data, and similar transformations are reversible representations, not encryption.
Representative Encoding Boundaries
These tools were selected to span byte encoding, URL components, Unicode escapes, markup entities, internationalized domain names, and MIME header text.
Base64 Encoder Decoder
Encode UTF-8 text as standard Base64 or decode validated bytes as UTF-8 text or hex.
Open tool →URL Encoder Decoder
Percent-encode URL components, full URLs, or form values and decode percent escapes back to text.
Open tool →HTML Escape Unescape
Escape and unescape HTML entities for safe text rendering, frontend debugging, APIs, and web development workflows.
Open tool →Unicode Escape Sequence Converter
Convert JavaScript Unicode escapes and numeric HTML references with text, line, JSON, or code-point output.
Open tool →Punycode Converter
Convert IDN hostnames between Unicode and ASCII form with label-level IDNA validation.
Open tool →MIME Encoded-Word Decoder
Decode MIME and RFC 2047 email subjects, sender names, UTF-8 Base64 words, Q encoding, charsets, and folded headers locally.
Open tool →All Encoding Tools
Browse all 31 tools for Base64 and Base64URL, Base32, Base58, hex and octal bytes, percent encoding, Unicode escapes, HTML or XML entities, MIME text, Punycode, PEM text, QR data, and related transformations.
Base64 Encoder Decoder
Encode UTF-8 text as standard Base64 or decode validated bytes as UTF-8 text or hex.
URL Encoder Decoder
Percent-encode URL components, full URLs, or form values and decode percent escapes back to text.
Slug Generator
Build lowercase hyphenated URL slugs with Unicode-preserving or ASCII-only output.
Text Case Converter
Change text between uppercase, lowercase, simple title case, and sentence case with Unicode-aware casing.
QR Code Generator
Encode text or URLs as downloadable QR images with selectable size and error correction.
Unicode Encoder Decoder
Inspect text as UTF-16 escapes, U+ code points, UTF-8 bytes, normalization, bidi controls, and surrogate validity.
Hex Encoder Decoder
Encode UTF-8 text as hexadecimal bytes and decode valid UTF-8 hex without silent replacement.
HTML Escape Unescape
Escape and unescape HTML entities for safe text rendering, frontend debugging, APIs, and web development workflows.
ASCII Converter
Convert text to ASCII codes and decode ASCII values back into readable text for debugging and encoding workflows.
CSV Escape Formatter
Quote CSV fields, double embedded quotation marks, and preserve commas, line breaks, and boundary whitespace.
Morse Code Translator
Translate between text and International Morse notation with explicit spacing and optional software extensions.
NATO Phonetic Alphabet Converter
Spell letters with official NATO/ICAO code words and optional radiotelephony digit pronunciations.
Binary Encoder Decoder
Encode text to binary and decode binary values back into readable text for debugging, learning, and encoding workflows.
ROT13 Encoder Decoder
Rotate ASCII letters by 13 places while preserving numbers, punctuation, and other Unicode text.
Base64 Image Encoder Decoder
Encode image files as Base64 data URLs or validate, preview, and inspect decoded image bytes.
JWT Base64URL Encoder Decoder
Decode JWS/JWE compact segments or encode JSON and text as JOSE-style Base64URL with padding controls.
URL Query Encoder Decoder
Decode ordered query parameters or build percent-encoded values with explicit form-style handling.
Data URI Generator
Build compact data URLs with explicit media type, charset, percent encoding, or Base64 choices.
Unicode Escape Sequence Converter
Convert JavaScript Unicode escapes and numeric HTML references with text, line, JSON, or code-point output.
Punycode Converter
Convert IDN hostnames between Unicode and ASCII form with label-level IDNA validation.
Base32 Encoder Decoder
Encode bytes with RFC 4648 Base32 or Base32hex while validating padding, alphabet, and canonical pad bits.
Base58 Encoder Decoder
Convert raw bytes with Bitcoin or Flickr Base58 while preserving leading-zero and alphabet semantics.
Quoted Printable Encoder Decoder
Encode or decode MIME body bytes with RFC 2045 escapes, wrapping, whitespace, and charset boundaries.
Percent Encoding Analyzer
Trace percent-encoded bytes, malformed escapes, UTF-8 failures, reserved delimiters, and query plus handling.
URL Safe Base64 Converter
Convert, normalize, and inspect Base64URL with canonical pad-bit validation, padding controls, and UTF-8 or Latin-1 views.
PEM Certificate Encoder Decoder
Decode, encode, parse, and normalize PEM certificates, keys, CSRs, CRLs, Base64 bodies, labels, and line wrapping locally.
MIME Encoded-Word Decoder
Decode MIME and RFC 2047 email subjects, sender names, UTF-8 Base64 words, Q encoding, charsets, and folded headers locally.
String Escape Sequence Converter
Decode and encode escaped strings for JavaScript, JSON, Unicode, hex, and C-style text.
XML Escape Unescape
Escape XML text safely or decode predefined and numeric entities under XML 1.0 or 1.1 rules.
Shell Command Escape Tool
Prepare literal arguments for POSIX shells and PowerShell, with clear warnings for CMD and dotenv differences.
Octal Encoder Decoder
Convert between readable text and octal byte values using ASCII or UTF-8 decoding.
Decodable, Valid, and Canonical Are Three Different Claims
A permissive decoder may accept text that a standards-oriented encoder should never produce. Base64 padding rules vary by profile, Base64URL uses a different alphabet, percent escapes can be malformed, and Unicode escapes can encode unmatched surrogate code units. Successfully producing bytes does not prove the spelling was canonical for the intended format.
The next boundary is text decoding. Arbitrary bytes are not automatically valid UTF-8, and silently replacing invalid byte sequences can hide data loss. Several Yoryantra tools therefore expose byte-oriented output, code-point information, or validation notes instead of forcing every decoded value into readable text.
Standards Behind the Representations
RFC 4648 defines Base16, Base32, Base64, and the URL-safe Base64 alphabet, including canonical encoding concerns such as pad bits.
The WHATWG URL Standard documents browser URL parsing, percent-encoding sets, query serialization, and form-related URL behavior.
RFC 2045 defines MIME transfer encodings such as quoted-printable and Base64 for message bodies.