Online Developer Tools

local-first developer tools with no server-side storage, zero external dependencies, and fully open-source code.

Identity Tools

UUID Generator

UUID Generator

Generate unique identifiers (UUID).

UUID Inspector

UUID Inspector

Inspect unique identifiers (UUID).

ULID Generator

ULID Generator

Generate unique identifiers (ULID).

Nano ID Generator

Nano ID Generator

Generate unique identifiers (Nano ID).

Random String Generator

Random String Generator

Generate random strings.

Encoding Tools

Base64 Encoder

Base64 Encoder

Encode Base64 strings.

Base64 Decoder and Inspector

Base64 Decoder and Inspector

Decode and inspect Base64 strings.

Base64 to File

Base64 to File

Convert Base64 strings to files.

Base64 from File

Base64 from File

Convert files to Base64 strings.

HTML Entities Encoder

HTML Entities Encoder

Encode HTML entities.

HTML Entities Decoder

HTML Entities Decoder

Decode HTML entities.

URL Encoder

URL Encoder

Encode URLs.

URL Decoder

URL Decoder

Decode URLs.

URL Parser

URL Parser

Parse and analyze URL structures.

JSON & Code Tools

JSON Formatter and Validator

JSON Formatter and Validator

Format and validate JSON data.

JSON Explorer

JSON Explorer

Explore and analyze JSON data.

Security & Tokens

Hash Generator

Hash Generator

Generate hashes for various algorithms.

Hash Verifier

Hash Verifier

Verify hashes for various algorithms.

JWT Decoder and Inspector

JWT Decoder and Inspector

Decode and inspect JSON Web Tokens (JWT).

Entropy Analyzer

Entropy Analyzer

Analyze the entropy of strings.

Utilities

Timestamp Converter

Timestamp Converter

Convert timestamps.

Color Picker

Color Picker

Pick colors using HSV, HEX, and RGB formats.