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🔧 Free Online Encoding Tools

Fast, secure, client-side encoding and decoding. Your data never leaves your browser.

Base64 Decoder

Convert Base64 encoded strings back to readable plain text. Useful for decoding encoded data, API responses, and email attachments.

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What is Base64 Decoding?

Base64 decoding converts Base64 encoded text back to its original format. Base64 is commonly used to encode binary data into ASCII text format for transmission over text-based protocols.

Common use cases: Decoding API responses, email attachments, data URIs, and encoded credentials.

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Base64 Encoder

Convert plain text to Base64 encoded format. Perfect for encoding data for APIs, embedding images, or safe data transmission.

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What is Base64 Encoding?

Base64 encoding converts binary data or text into ASCII string format using 64 printable characters. This makes it safe to transmit over systems that only support text.

Common use cases: Embedding images in HTML/CSS, encoding credentials for HTTP Basic Auth, data URIs, and API data transmission.

URL Encoder

Encode text for safe use in URLs. Converts special characters to percent-encoded format (%20, %3A, etc.).

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What is URL Encoding?

URL encoding (percent-encoding) converts characters into a format that can be safely transmitted over the internet. Special characters are replaced with % followed by hexadecimal values.

Common use cases: Encoding query parameters, form data, special characters in URLs, and API requests.

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URL Decoder

Decode URL-encoded (percent-encoded) strings back to readable text. Converts %20, %3A, and other encoded characters.

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What is URL Decoding?

URL decoding converts percent-encoded characters back to their original form. This is useful for reading encoded URLs and understanding query parameters.

Common use cases: Reading encoded URLs, debugging API requests, analyzing query strings, and processing form data.

HTML Entity Encoder

Convert special characters to HTML entities. Prevents XSS attacks and displays special characters correctly in HTML.

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What is HTML Entity Encoding?

HTML entity encoding converts special characters like <, >, &, and quotes into their HTML entity equivalents (&lt;, &gt;, &amp;, etc.). This prevents browsers from interpreting them as HTML code.

Common use cases: Preventing XSS attacks, displaying code snippets in HTML, showing special characters, and sanitizing user input.

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HTML Entity Decoder

Convert HTML entities back to their original characters. Decode &lt;, &gt;, &amp;, and other entities.

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What is HTML Entity Decoding?

HTML entity decoding converts HTML entities back to their original characters. This is useful for reading encoded HTML content and processing scraped web data.

Common use cases: Reading encoded HTML, processing web scraping results, debugging HTML output, and converting entities to readable text.