Yes. All encoding and decoding runs 100% locally inside your web browser using native JavaScript TextEncoder, TextDecoder, encodeURIComponent, encodeURI, and decodeURIComponent Web APIs. Zero URLs, strings, or API parameters are transmitted over external networks or saved to any server.

encodeURI is designed for encoding a complete URL address — it leaves structural characters like ':', '/', '?', '#', '&', and '=' unescaped so the resulting URL remains valid and navigable. encodeURIComponent is designed for encoding individual query parameter values or form payloads — it escapes all reserved delimiters so the value can be embedded safely inside any URL query string without breaking URL syntax.

Use Form mode when submitting data via HTML form POST requests or consuming API endpoints expecting application/x-www-form-urlencoded content types. It follows Component mode rules but encodes space characters as '+' instead of '%20', conforming to W3C HTML form submission standards (RFC 1866).

Path Segment mode encodes reserved path characters while preserving legitimate path sub-delimiters (like ':', '@', '&', '=', '+', '$', ',') commonly used in RESTful URLs (e.g. /users/:id). Query Param mode aggressively escapes all non-alphanumeric characters into %HEX sequences, ensuring maximum transmission safety for sensitive tokens and base64 payloads.

RFC 3986 §2.1 explicitly recommends using uppercase hexadecimal digits for percent-encoding (e.g. '%3A%2F%2F' instead of '%3a%2f%2f') to ensure canonical normalization across web servers and caching proxies. Telekit allows you to toggle between uppercase and lowercase with 1-click for API compatibility.

Paste any URL into the Live Query & UTM Studio tab to automatically decompose it into the base address, anchor hash, and individual key-value parameter rows. You can add Google Analytics UTM parameters (utm_source, utm_medium, utm_campaign), OAuth2 directives, duplicate rows, sort A-Z, or import/export parameter sets directly as JSON objects.

Yes. Switch to the Batch tab, paste one URL or string per line (or load any .txt/.csv file), and every row is processed independently. You can toggle options to trim surrounding whitespace or skip empty rows, and export results directly as a .txt file or copy all to clipboard.

The input toolbar includes 5 developer ergonomic cleaners: 🧹 Trim (strips leading/trailing space), ␍ Strip Blanks (collapses internal carriage returns & newlines into single spaces), 🔤 Quotes (normalizes curly smart quotes “ ” ‘ ’ to standard ASCII quotes), ⚡ Unquote (strips enclosing quotes or angle brackets), and 🧼 Unescape \/ (converts escaped backslashes \/ to /).

The Reference Cheat Sheet tab provides an instant searchable matrix of 34+ standard URI characters, detailing their ASCII hex escapes, official RFC-3986 classification (Reserved delimiter, Sub-delimiter, Unreserved, or Unsafe Symbol), and usage notes, complete with 1-click '+ Insert' and '📋 Hex' copy actions.

Press / to focus the input textarea, Esc to clear workspace or dismiss modals, Ctrl+Enter (Cmd+Enter) to copy primary output, Alt+K or ? for the Keyboard Shortcuts modal, Alt+D to star the tool (telekit_starred_tools), Alt+P for DevToys Smart Clipboard Auto-Detect, Alt+V to toggle Side-by-Side Split Studio vs Full-Width Stacked Studio, Alt+S to open the Developer API Code Studio (8 languages), Alt+W to swap encode/decode direction, Alt+T to cycle studio tabs, and Alt+1 through Alt+6 for 1-click Quick Copy format strips (Output, Component, Full URI, Form, Markdown Table, and JSON Audit Report).