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Developer Tools

Everyday utilities for developers — format, encode, hash, test, and compare.

100% free. No install. All tools run in your browser.

Most Popular Free

JSON Formatter

Format, validate, and minify JSON data with syntax highlighting.

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Free

Base64 Encode/Decode

Convert between plain text and Base64. Full UTF-8 support.

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Free

URL Encode/Decode

Encode and decode URL strings for safe use in web addresses.

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Free

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.

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Free

Color Picker

Pick colors and convert between HEX, RGB, and HSL formats.

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Free

Regex Tester

Test regular expressions with live matching, groups, and flags.

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Free

Text Diff

Compare two texts side by side and highlight the differences.

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Free

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words.

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Free

Markdown Editor

Write Markdown with live preview. Export to HTML.

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Free

CSV to JSON

Convert CSV data to JSON format with automatic header detection.

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Free

JSON to CSV

Convert JSON arrays to CSV format. Download or copy the result.

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Free

JWT Decoder

Decode and inspect JWT tokens. View header, payload, and verify structure.

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Free

Timestamp Converter

Convert between Unix timestamps and human-readable dates. UTC and local time.

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Free

Case Converter

Convert text between camelCase, snake_case, kebab-case, PascalCase, and more.

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New Free

UUID Generator

Generate v4 UUIDs in batch. Multiple formats.

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New Free

Cron Builder

Visual cron expression builder with next execution times.

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New Free

SQL Formatter

Format and beautify SQL queries with keyword uppercasing.

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New Free

HTML Minifier

Remove whitespace and comments from HTML.

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New Free

CSS Minifier

Compress CSS by removing whitespace and comments.

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New Free

JS Minifier

Compress JavaScript by removing whitespace and comments.

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New Free

IP Lookup

Find your IP address and geolocation details.

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Your data never leaves your device

All tools run locally in your browser. No data is sent to any server.

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