UTF-8 and binary correctness
Text is converted with TextEncoder and TextDecoder so non-ASCII input round-trips correctly. Files are processed as raw bytes rather than coerced through JavaScript strings.
Base64 & Hash
Encode UTF-8 text or binary files and generate local digests without uploading data.
Local input
Output
Tool documentation
Encode Base64 and generate hashes locally
Transform UTF-8 text or binary files without sending source data or generated digests to a utility server.
100% Client-Side
Conversion runs locally in your browser.
No Payload Logging
Your tool input is never uploaded or logged.
Private by Design
Input stays on your device and is not persisted.
How to use
- 1
Choose text or a local file
Text mode supports UTF-8 Base64 encoding and decoding plus all hashes. Binary file mode supports Base64 encoding and digest generation up to the documented memory limit.
- 2
Select the transformation
Choose standard Base64, URL-safe Base64URL, a modern SHA digest, or legacy MD5 when compatibility requires it.
- 3
Copy or download the result
The output remains in this tab and can be copied or downloaded as plain text without creating an upload.
Technical details
Web Crypto SHA digests
SHA-256, SHA-384, and SHA-512 use the browser Web Crypto API. Its digest operation is non-streaming, so DevCrate enforces explicit text and file memory limits.
MD5 is compatibility-only
MD5 is implemented locally for legacy checks and tested against known vectors, but it is cryptographically broken and must not be used for passwords, signatures, or security decisions.
Privacy & security verification
Encoding, decoding, and digest generation happen in browser memory. Selected files are read only by this tab, capped before loading, and never uploaded or persisted. Ordinary static page requests may still be logged by the site host, but they never contain your tool input.