Text to Base64URL Converter for URL-Safe Data Encoding Online
The Text to Base64URL converter encodes pasted text using the URL-safe alphabet defined by RFC 4648 §5. It changes + to - and / to _, so the result is more convenient for URLs, cookies, and filenames. Padding is normally omitted; use the padding toggle when you need a padded variant. Copy the generated value for use in code or another tool.
The Text to Base64URL converter encodes pasted text using the URL-safe Base64 variant defined by RFC 4648 §5. It creates a copyable value that can be useful when text needs to fit into a URL, cookie, or filename. The tool always uses the URL-safe alphabet, so + becomes - and / becomes _.
To convert text, paste it into the input and review the generated Base64URL result. Padding is normally omitted, and the padding toggle lets you create the less common padded variants. This is useful when the system receiving the value expects a particular padding style. The tool includes a worked example: Hello, URL-safe Base64!+/=?
Standard Base64 uses + and / in its alphabet, while Base64URL substitutes - and _ for those characters. This makes Base64URL more convenient in contexts where the standard symbols may need percent-escaping. Padding is also commonly omitted in Base64URL; JWTs never carry = padding. Base64URL is an encoding format, not encryption, so it does not make the original text secret.
Conversion runs entirely in your browser: your input is processed on your device and is not uploaded, stored, or sent to a server. The tool works offline once the page has loaded, and it is free to use. These qualities make it convenient for developers and DevOps engineers who need a quick way to encode text without sending it to a remote service.
Step 1: Paste the text you want to encode into the input field. The tool accepts text and converts it to Base64URL.
Step 2: Adjust the padding option if needed. Padding is normally omitted, but the toggle lets you produce a padded variant.
Step 3: Review the generated result. The output uses the URL-safe alphabet, replacing + with - and / with _.
Step 4: Copy the Base64URL value for use in your code, URL, cookie, filename, or another tool.
Use case: Move text into a system that accepts Base64URL rather than standard Base64. The URL-safe alphabet avoids the + and / characters.
Use case: Check whether a Base64URL value you were given corresponds to the original text. Convert the text and compare the generated result.
Use case: Prepare a text snippet for documentation, a ticket, or a commit message. The result is ready to copy and share.
Use case: Sanity-check an encoded value before pasting it into code. You can quickly review the URL-safe output in your browser.
Use case: Create a URL-safe representation of text for a URL, cookie, or filename. Base64URL uses - and _ instead of + and /.
Use case: Prepare text for a token format that uses Base64URL. The padding toggle can help when you need a padded variant rather than the usual unpadded form.