About Base64 Encoder
Base64 Encoder turns plain text into Base64 strings so binary-safe transport through email-ish systems, embedding small assets in data URLs, or debugging authentication headers becomes possible. Developers test APIs expecting Base64 bodies; automation engineers craft mock JWT segments (without signing them magically); support staff verify what characters survive encoding.
Base64 is not encryption—anyone can decode it instantly. Never treat Base64 as secrecy; it is encoding for representation, not protection. Length grows roughly four-thirds versus raw bytes, so huge inputs become unwieldy quickly.
Chain with JSON Formatter when inspecting Base64 inside JSON fields. For files, dedicated file-to-Base64 tools (if added later) beat pasting megabytes into a textarea.
Do not encode passwords or private keys for “safe sharing”—use proper secret managers instead. For HIPAA, PCI, or classified data, run encoding offline. For public hello-world tutorials, this tool is ideal and low risk.
When decoding on other systems, watch newline wrapping: some transports insert line breaks every 76 characters per MIME standards—strip whitespace before decoding if failures occur.
Inputs
Paste or type plain text in the box. This tool does not require a file upload unless the page shows an additional file control.
How to use
- Enter or paste your text (or fill every UTM field).
- Click Run tool.
- Copy or save the formatted output.
If you see an error, double-check required fields, then retry—transient network issues can usually be fixed with a second run.
Security & privacy
Files and text you send are processed to produce your result and are not intended for long-term storage on your behalf. Avoid uploading passports, bank details, medical records, or legally sensitive material unless you accept the risks of any online service. For confidential workflows, prefer offline software on a device you control. Read our privacy policy for site-wide practices.