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SnipKit

Online Encoding & Decoding Tools

5 toolsFreeNo signup

Encoding tools convert data between different representations for safe transmission, storage, and display. Base64-encode binary data for embedding in JSON or HTML, URL-encode query parameters for safe HTTP requests, escape HTML entities to prevent XSS, or decode a JWT to inspect its claims without an external library.

All encoding and decoding happens in your browser. Your tokens, URLs, and data are never sent to any server, which is especially important when working with JWTs or authentication-related strings. Paste your input, see the output instantly, and copy it with one click.

Popular Online Encoding & Decoding Tools

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings instantly in your browser.

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URL Encode/Decode

Encode or decode URLs and query strings instantly in your browser.

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JWT Decoder

Decode and inspect JSON Web Tokens — view header, payload, and expiration.

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Common use cases

API IntegrationSecurity & Auth DebuggingEmail & Data TransferFrontend DevelopmentImage Embedding

All Encoders (5)

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings instantly in your browser.

HTML Entity Encoder/Decoder

Encode and decode HTML entities in named, decimal, or hex format.

URL Encode/Decode

Encode or decode URLs and query strings instantly in your browser.

JWT Decoder

Decode and inspect JSON Web Tokens — view header, payload, and expiration.

Image to Base64 Converter

Convert images to Base64 encoded strings

Frequently Asked Questions

Is it safe to decode JWTs in the browser?
Yes. JWT decoding only reads the Base64-encoded header and payload — it does not verify signatures or contact any server. Your token never leaves your device, making it safer than pasting it into a third-party website.
What is Base64 encoding used for?
Base64 converts binary data into ASCII text. Common uses include embedding images in CSS or HTML (data URIs), encoding file attachments in emails (MIME), and transmitting binary data through text-only protocols like JSON APIs.
When should I URL-encode my data?
URL-encode any data placed in query parameters, form values, or path segments that might contain special characters (spaces, ampersands, equals signs, etc.). This ensures the URL is parsed correctly by browsers and servers.
Can I encode images to Base64?
Yes. The Image to Base64 converter accepts PNG, JPEG, GIF, SVG, and WebP files. It produces a ready-to-use data URI that you can embed directly in HTML img tags or CSS background properties.