URLエンコードを瞬時に変換！無料で使えるURLエンコーダー・デコーダーツール
特殊文字や日本語を含むURLを正しくエンコードし、Web開発やAPI設定のエラーを防ぐための便利なオンラインツールです。
min1921 words
無料のオンラインツールを使用して、URLのエンコードおよびデコードを簡単に行います。理解を深めるための丁寧な解説とヒント付きで、結果を即座に確認できます。
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URLエンコード/デコード
無料のオンラインツールを使用して、URLのエンコードおよびデコードを簡単に行います。理解を深めるための丁寧な解説とヒント付きで、結果を即座に確認できます。
入力
計算に必要な値を入力してください
結果
計算結果を表示
計算するには以下の値を入力してください
a URL Encoder/Decoderとは何ですか
A URL Encoder/Decoder converts special characters for safe URL transmission and reverses the encoding when needed.
使い方
Paste text to encode for URLs, or paste encoded text to decode. Results are instant.
よくある質問
What is URL encoding?
URL encoding (also known as percent-encoding) is a mechanism for encoding unreserved characters in a Uniform Resource Identifier (URI) under certain circumstances. It converts unsafe characters into a format that can be transmitted over the Internet.
Why do I need to encode URLs?
URLs can only contain a limited set of ASCII characters (alphanumeric and some special characters). If a URL contains characters outside this set (like spaces, accents, or symbols), it must be encoded to ensure the browser interprets the address correctly and the server receives the data as intended.
Which characters are replaced during encoding?
Generally, any character that is not in the 'unreserved' set (A-Z, a-z, 0-9, hyphen, underscore, dot, tilde) is replaced. Common replacements include spaces becoming %20 or +, slashes becoming %2F, and question marks becoming %3F.
How does the tool handle spaces?
The standard for URL encoding replaces a space with %20. However, in the query string part of a URL (application/x-www-form-urlencoded), spaces are often represented by a plus sign (+). This tool typically uses the standard %20 format unless specified otherwise.
Does this tool support UTF-8 characters?
Yes, this tool encodes characters using UTF-8 byte representation. For example, the Euro symbol (€) is converted into three encoded bytes: %E2%82%AC.
What is the difference between encoding a component vs. the full URL?
When encoding the full URL, characters that have special meaning in the URL structure (like /, ?, &, =) are also encoded. When encoding a specific component (like a query parameter value), you typically want to leave those structural characters unencoded. This tool encodes the entire string provided.
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