🔐 Best Free Encoding & Decoding Tools Online
Encode and decode URLs, HTML entities, and Base64 strings with these free online tools. Quick, accurate, no sign-up.
Encoding & Decoding Tools (7 Tools)
URL Encoder
Encode special characters for URLs instantly.
Use case: URL preparation →
URL Decoder
Decode percent-encoded URL strings back to readable text.
Use case: URL reading →
HTML Encoder
Escape HTML special characters to entities.
Use case: XSS prevention →
HTML Decoder
Decode HTML entities back to readable text.
Use case: Content extraction →
Base64 Encoder
Encode text to Base64 format instantly.
Use case: Data encoding →
Base64 Decoder
Decode Base64 strings back to original text.
Use case: Data decoding →
Hash Generator
Generate djb2 and FNV-1a hashes from text.
Use case: Data integrity, checksums →
Frequently Asked Questions
What is URL encoding? ▼
URL encoding (percent encoding) converts special characters in URLs to a format that can be transmitted over the Internet. For example, a space becomes %20, and @ becomes %40. Our URL Encoder handles this automatically.
What is Base64 encoding? ▼
Base64 encodes binary data into ASCII text format. It's commonly used for transmitting data over text-based protocols like email and HTTP. Our Base64 Encoder converts your text to Base64, and the Decoder reverses it.
Why is HTML encoding important? ▼
HTML encoding prevents Cross-Site Scripting (XSS) attacks by converting special characters like < and > into their HTML entity equivalents (< and >). This ensures user input is displayed as text, not executed as code.
What is a hash generator? ▼
A hash generator creates a fixed-size numerical fingerprint from any input text. Even a tiny change in the input produces a completely different hash. Our tool generates both djb2 and FNV-1a hashes for comparison.
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About Encoding & Decoding Tools
Our collection of encoding & decoding tools includes 7 free online tools designed for writers, developers, and SEO professionals. All tools run entirely in your browser — no data is uploaded to any server. Your text stays private and secure.
Each tool is designed for speed and accuracy. Simply paste your text, click a button, and get instant results. No sign-up required. No ads. No tracking. Just fast, free tools that work.