Developer Toolbox

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JSON Formatter / Minifier / Validator

Format, minify, and validate JSON data. Auto-highlights syntax errors with precise location.

Format Minify Validate

🕐

Timestamp ↔ Date Converter

Convert between Unix timestamps and human-readable dates. Supports seconds/milliseconds and multiple formats.

Timestamp Date Timezone

🔗

URL Encoder / Decoder

Encode and decode URLs and query parameters. Supports both encodeURI and encodeURIComponent modes.

URL Encode Decode

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Base64 Encoder / Decoder

Convert text to/from Base64. Full UTF-8 support including Unicode characters and Data URI decoding.

Base64 Encode Decode

.*

Regex Tester

Test regular expressions in real-time. Highlights matches, shows capture groups, supports all JS regex flags.

Regex Match Groups

#️⃣

Hash Generator

Compute MD5, SHA-1, SHA-256, SHA-512 digests for text or files. Supports Hex and Base64 output formats.

Hash MD5 SHA-256

🎨

Color Converter

Convert between HEX, RGB, and HSL formats with live preview, shade generation, and color picker.

HEX RGB HSL

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JWT Decoder

Decode JSON Web Tokens to inspect headers, payloads, expiration times, and claim details.

JWT Token Decode

📝

Text Diff

Compare two text blocks line by line with highlighted additions, deletions, and unchanged lines.

Diff Compare Changes

🆔

UUID Generator

Generate random UUID v4 with batch generation, uppercase/lowercase, and dash options.

UUID GUID Batch

📄

Markdown Preview

Edit and preview Markdown in real-time. Supports GFM tables, code blocks, and task lists.

Markdown Preview GFM

⚙️

YAML ↔ JSON Converter

Convert between YAML and JSON with format validation. Ideal for K8s and DevOps configs.

YAML JSON Convert

⏰

Cron Expression Parser

Enter a cron expression to see a human-readable description and next execution times.

Cron Schedule Timer

🗃️

SQL Formatter / Minifier

Beautify or minify SQL statements with keyword casing and custom indentation options.

SQL Format Minify

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Password Generator

Generate secure random passwords with customizable length, character sets, and batch generation.

Password Random Security

📱

QR Code Generator

Generate QR codes from text or URLs. Customize size, error correction level, and colors.

QR Code Generator Download

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IP Address Lookup

Look up any IP address for geolocation, ISP, timezone, ASN, and more detailed info.

IP Geolocation Lookup

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Unix Permissions Calculator

Visually calculate Unix/Linux file permissions. Convert between octal and symbolic notation.

chmod Permissions Linux

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String Escape / Unescape

Escape and unescape strings for HTML, JavaScript, JSON, XML, and CSV formats online.

Escape HTML JSON