# Nutter — free, private, in-browser file tools

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Base64 Encode / Decode

Unicode-safe Base64 with URL-safe alphabet and padding options.
`/dev-tools/base64`](/dev-tools/base64) [

URL Encoder / Decoder

Percent-encode components or full URIs, and decode them back.
`/dev-tools/url-encoder`](/dev-tools/url-encoder) [

Password Generator

CSPRNG passwords with charset control and entropy strength meter.
`/dev-tools/password-generator`](/dev-tools/password-generator) [

UUID Generator

RFC 9562 UUIDs — every version from v1 to v8, sortable time-based included.
`/dev-tools/uuid-generator`](/dev-tools/uuid-generator) [

Hash Generator

SHA-1/256/384/512 digests with an expected-hash comparison.
`/dev-tools/hash`](/dev-tools/hash) [

JSON Formatter

Pretty-print or minify JSON with key sorting and validation.
`/dev-tools/json-formatter`](/dev-tools/json-formatter) [

JWT Decoder

Inspect JWT headers, payloads and expiry claims instantly.
`/dev-tools/jwt-decoder`](/dev-tools/jwt-decoder) [

Timestamp Converter

Unix seconds/milliseconds ↔ ISO dates with live current time.
`/dev-tools/timestamp-converter`](/dev-tools/timestamp-converter)

8 tools · everything is computed locally, nothing leaves your device.

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