Base64 Encode / Decode

Encode and decode Base64 text with UTF-8 support, URL-safe output, optional padding, and wrapped lines for config files.

100% client-side - your input is processed in your browser and never sent to a server.

Plain Text0 chars / 0 bytes / 0 lines

Options

URL-safe Base64Use - and _ instead of + and /.Omit paddingRemove trailing = characters when encoding. Wrap encoded linesUseful for PEM-like files and manifests.

Line width

Browser Only

Text is encoded or decoded locally with browser APIs. No API route is required.

URL-safe Tokens

Toggle URL-safe mode for JWT segments, web tokens, and filename-safe encoded values.

Config Friendly

Add padding or line wrapping depending on the parser, manifest, or shell command you are targeting.

Base64 Encode / Decode Guide

What Base64 is for

Base64 represents binary or UTF-8 text using ASCII characters. It is commonly used in JSON payloads, Kubernetes manifests, HTTP headers, tokens, certificates, and configuration values.

Standard vs URL-safe Base64

Standard Base64 uses + and / characters. URL-safe Base64 replaces them with - and _, which is easier to use in URLs, filenames, and token segments.

Padding and line wrapping

Padding with = characters is part of standard Base64, but some token formats omit it. Line wrapping can help with config files, while compact output is usually better for headers and environment variables.

Privacy

This tool runs entirely in the browser. Base64 is encoding, not encryption, so anyone with the encoded value can decode it.