Base64 encode / decode
Encode text or local files to Base64, decode Base64 back to text — UTF-8 safe, optional Base64URL and data URI. Not uploaded to our servers for processing.
Tool processing runs in your browser — your pastes/files are not uploaded to our servers for processing.Details
Security note. Do not paste production secrets into any webpage if shared devices or extensions are in your threat model.Processing stays in your browser — inputs are not uploaded to our servers for processing.
Embed this tool
Paste this iframe on your site. Includes a backlink to Base64 Encode / Decode. Opens chrome-less with ?embed=1.
Frequently asked questions
How do I encode text to Base64?
Paste your text, keep the mode on Encode, and the Base64 appears instantly. This tool is UTF-8 safe, so emoji and non-Latin characters encode correctly.
How do I decode Base64?
Switch the mode to Decode and paste the Base64 string. If it is valid, the original text appears; invalid input shows an error.
Can I encode a file?
Yes. Pick a local file — bytes are read with the File API and encoded in your browser. Optionally wrap as a data URI. The file is not uploaded to our servers for processing.
What is Base64URL?
A URL-safe variant that replaces + with - and / with _, and often omits padding =. Useful in JWTs and query strings.
Is Base64 encryption?
No. Base64 is an encoding, not encryption — anyone can decode it. Use it to safely transport binary/text in JSON, URLs, or data URIs, not to protect secrets.
Is my input uploaded?
No. TryDevSnip encodes and decodes in your browser with the native atob/btoa APIs. Nothing you paste is uploaded to our servers for processing.