URL Encoder / Decoder

Instantly encode or decode URLs to ensure safe transmission over the internet. 100% Client-Side.

Raw String Input

Encoded Output

Input: 0 chars • 0 Bytes Output: 0 chars • 0 Bytes

🔒 PRIVACY NOTE: Your files are processed entirely within your web browser. We do not upload, store, or share your data with any servers. 100% secure and private.

How it works

A simple, smart, and completely secure local URL conversion tool.

Select Mode

Choose to Encode a raw string into a safe URL format, or Decode an encoded URL back to readable text.

Configure Options

Pick between Component or URI encoding mode. Toggle "Spaces as +" for form data, or enable Strict Mode for extra safety.

Copy Safely

Click copy or use the Swap button to flip between encode and decode. Everything runs locally in your browser memory.

Frequently Asked Questions

Is this tool completely free?

Yes! File Gulp provides completely free file conversion tools with no hidden fees, no watermarks, and no registration required.

Are my files safe?

Absolutely. Unlike other converters, File Gulp uses modern WebAssembly technology to convert files directly on your device. Your files never leave your computer, ensuring maximum privacy.

Does it work on mobile devices?

Yes, our tool is fully responsive and works perfectly on smartphones and tablets, directly from your mobile browser.

Will the quality be affected?

No, we use high-quality algorithms to ensure your output files maintain the best possible quality during conversion.

Is there a file size limit?

Very large files may be limited by your device memory/browser performance. For normal image sizes, conversion is fast and seamless.

Encoding Std.

Component vs. URI Encoding

encodeURIComponent() encodes all special characters including /, ?, =, and & — ideal for query parameter values. encodeURI() preserves the URL structure, only encoding unsafe characters like spaces and non-ASCII.

Security First

Why encode locally?

URLs frequently contain sensitive query parameters: session tokens, API keys, user emails, or search queries. Sending these to an online encoder is a privacy risk. File Gulp processes everything inside your browser using JavaScript — zero data exposure.

Common URL encoding reference

Here are the most frequently encoded characters in web development:

Space: Encoded as %20 (standard) or + (in application/x-www-form-urlencoded data).
Ampersand (&): Becomes %26 — critical because & separates query parameters.
Equals (=): Becomes %3D — used to separate key-value pairs in query strings.
Slash (/): Becomes %2F — only encoded in Component mode to avoid breaking URL paths.
Plus (+): Becomes %2B — important because + is interpreted as a space in form data.
Non-ASCII (e.g., Arabic): Characters like مرحبا are converted to UTF-8 byte sequences then percent-encoded.