DevToolBox

All Developer Tools

Everything runs entirely in your browser. No backend required, your data stays local.

data

JSON Formatter

Pretty print, validate and minify JSON.

Open tool →
data

JSON Diff

Compare two JSON payloads side by side.

Open tool →
text

Base64 Encoder

Encode plain text to Base64.

Open tool →
text

Base64 Decoder

Decode Base64 into plain text.

Open tool →
security

JWT Decoder

Inspect JWT headers and payload locally.

Open tool →
time

Timestamp Converter

Convert Unix timestamps to ISO dates and back.

Open tool →
text

URL Encoder

Encode text for URLs and decode it back.

Open tool →
text

Regex Tester

Test regular expressions against input text.

Open tool →
security

Hash Generator

Generate SHA-1, SHA-256 and SHA-512 hashes in the browser.

Open tool →
security

SHA-256 Hash Generator

Generate SHA-256 cryptographic hashes instantly.

Open tool →
security

SHA-1 Hash Generator

Generate SHA-1 cryptographic hashes instantly.

Open tool →
security

MD5 Hash Generator

Generate MD5 cryptographic hashes instantly.

Open tool →
time

Cron Parser

Preview upcoming runs for a cron expression.

Open tool →
data

JSON → YAML

Convert JSON to YAML format.

Open tool →
data

YAML → JSON

Convert YAML to JSON format.

Open tool →
data

JSON → CSV

Export a JSON array to CSV format.

Open tool →
data

CSV → JSON

Parse a CSV document into a JSON array.

Open tool →
data

JSON Schema Generator

Paste JSON and get a JSON Schema instantly.

Open tool →
security

UUID Generator

Generate v1 and v4 UUIDs, single or in batches.

Open tool →
security

Password Generator

Generate strong passwords with custom rules.

Open tool →
security

HMAC Generator

Compute HMAC-SHA256/512 from a message and secret.

Open tool →
security

Bcrypt Hash

Hash and verify passwords with bcrypt.

Open tool →
security

JWT Generator

Sign a JWT with a secret using HS256 or HS512.

Open tool →
web

Query String Parser

Parse a query string into a JSON object.

Open tool →
web

Query String Builder

Build a query string from key-value pairs.

Open tool →
web

URL Parser

Break a URL into its components: protocol, host, path, query, fragment.

Open tool →
web

Slug Generator

Convert any text into a URL-friendly slug.

Open tool →
web

IP Validator

Validate and check if an IP address is an IPv4 or IPv6 format.

Open tool →
web

User-Agent Parser

Parse a browser User-Agent string to extract OS, browser, engine, and device.

Open tool →
web

HTTP Headers Parser

Parse raw HTTP headers into a structured JSON object.

Open tool →
time

Timestamp Generator

Convert a date and time to a Unix timestamp.

Open tool →
time

Timezone Converter

Convert a time between any two IANA timezones.

Open tool →
time

ISO Date Formatter

Format dates between ISO, Unix, Local and RFC formats.

Open tool →
text

Markdown → HTML

Convert Markdown text to HTML markup.

Open tool →
text

HTML → Markdown

Convert HTML markup back to Markdown.

Open tool →
text

HTML Escape

Escape or unescape HTML entities in text.

Open tool →
text

Text Diff

Compare two text blocks line by line or word by word.

Open tool →
text

Text Case Converter

Convert text between camelCase, snake_case, PascalCase, etc.

Open tool →
text

Lorem Ipsum Generator

Generate random placeholder text for designs and mockups.

Open tool →
text

Random String Generator

Generate random strings for tokens and IDs with custom rules.

Open tool →
code

HTML → JSX

Convert HTML markup to valid JSX for React.

Open tool →
code

SQL Formatter

Format and beautify SQL queries.

Open tool →
code

Color Converter

Convert colors between HEX, RGB and HSL formats.

Open tool →