Base64URL Converter
Encode and decode URL-safe Base64 (Base64URL). Convert between standard Base64 and Base64URL for JWTs, query strings, and filenames.
22 characters
30 characters · 22 bytes
How it works
Choose a mode
Encode turns UTF-8 text into Base64URL. Decode reverses it. Std to URL swaps +/ for -_ (and usually drops =). URL to Std restores standard Base64.
Padding and live convert
JWTs typically omit padding. Enable Keep padding if a consumer expects = characters. Live mode updates as you type.
Copy or download
Swap flips related modes and moves output to input. Copy or download the result. Nothing is uploaded.
What is a Base64URL converter?
Base64URL is the URL-safe variant of Base64 used in JWTs, signed cookies, and query parameters. Base64URL Converter is part of Easy24’s conversion toolbox. Your input stays in this tab for normal use; Easy24 does not upload that content to process it. This tool has no daily free-plan cap; use it as often as you need. Typical flow: Pick Encode, Decode, Standard to URL-safe, or URL-safe → Standard. Paste input, optionally keep padding, then copy or download. Related tools and reverse conversions appear on the page when a follow-up step is common.
Why use this tool
- UTF-8 ↔ Base64URL
- Standard Base64 ↔ Base64URL
- Optional padding retention
- Live mode and swap
- Byte stats
- Unlimited use with no daily cap
Questions
What is Base64URL?
A URL- and filename-safe Base64 alphabet (RFC 4648 §5) that uses - and _ instead of + and /, often without = padding. JWTs use it for each segment.
When should I keep padding?
Most JWT and query-string uses omit =. Keep padding only if the other side expects a length that is a multiple of 4 with = characters.
How is this different from the Base64 tool?
The Base64 tool focuses on text ↔ Base64 with an optional URL-safe checkbox. This page also converts existing Base64 strings between standard and URL-safe forms.
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When to use Base64URL Converter
Base64URL Converter sits in Easy24’s catalog as a focused page: one job, clear controls, and an honest free-plan badge when a quota applies. Encode and decode URL-safe Base64 (Base64URL). These pages are built for everyday strings and small payloads, not for shipping secrets through a public cloud converter. Because Base64URL Converter is bilingual on Easy24, the same workflow works in English or Turkish without changing how the tool behaves. Browser-first processing is the privacy default here: there is no Easy24 document inbox waiting to expire after a timeout for this workflow. This page has no daily free-plan cap, so you can run it as often as you need. When you are done, download or copy what you need, then close the tab. Related tools on the page cover common follow-up steps such as the reverse conversion or a neighboring format.
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