Base64 Encoder / Decoder
Encode or decode Base64 strings instantly. Perfect for working with data URIs, API payloads, or binary-to-text conversion.
Plain Text
Base64 Encoded
What Base64 encoding is used for in DevOps
Base64 is a binary-to-text encoding that represents arbitrary bytes using 64 printable ASCII characters. It is not encryption and adds no security: it simply lets binary data travel safely through channels that expect text, such as JSON payloads, HTTP headers and YAML manifests. In day-to-day platform work you meet Base64 most often inside Kubernetes Secrets, where every value is Base64-encoded, in Basic Auth headers, and when embedding small assets or certificates into config files.
Encode and decode entirely in your browser
This converter runs client-side, so the text you paste never leaves your machine. That matters when you are decoding a Kubernetes Secret or an auth token, because those values are sensitive even though Base64 looks scrambled. Remember that anyone can decode Base64 instantly, so never treat an encoded string as protected. If a value must stay private, encrypt it or store it in a secrets manager, not just Base64.
Common Base64 mistakes and how to fix them
A decode error almost always means the input is not valid Base64: it may contain whitespace, be URL-safe Base64 (which swaps + and / for - and _), or be missing padding. Kubernetes Secrets use standard Base64 with padding, so copy the full value. When a decoded Secret shows a trailing newline, the original file included one before encoding, which frequently breaks tokens. For a deeper look at handling secrets safely in clusters, see our Kubernetes security best practices guide.
Frequently asked questions
Is Base64 the same as encryption?
No. Base64 is reversible by anyone with no key. It only changes the representation of data, it does not protect it.
Why does my Kubernetes Secret value look like random text?
Kubernetes stores Secret values Base64-encoded. Paste the value here in decode mode to read the original.
What is URL-safe Base64?
A variant that replaces + and / with - and _ so the string is safe inside URLs. Standard decoders may reject it.
Does encoding increase data size?
Yes, Base64 output is about 33 percent larger than the input because every 3 bytes become 4 characters.