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Developer Tools

A comprehensive suite of essential developer tools for formatting, validation, security, and data transformation. Fast, secure, and feature-rich utilities that work entirely in your browser.

Comprehensive Tool Suite

Everything you need for modern development workflows

Development Tools

JSON Formatter

Format and validate JSON data

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Code Formatter

Minify and prettify code

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XML Formatter

Format and beautify XML documents

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API Tester

Test REST APIs with custom headers and payloads

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JSON Schema Generator

Generate JSON schemas from sample data

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Mock Data Generator

Generate realistic mock data from JSON schemas

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OpenAPI Linter

Validate and lint OpenAPI/Swagger specifications

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QR Code Generator

Generate QR codes from text with customizable options

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Color Palette Generator

Generate color palettes and convert between color formats

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Text Diff Tool

Compare text differences with inline and side-by-side views

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Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text in various formats

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Markdown Preview

Live preview Markdown as rendered HTML

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Converters & Encoders

Base64 Converter

Encode and decode Base64 data

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URL Converter

Encode and decode URLs

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CSV to JSON

Convert CSV files to JSON format

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ISO Week Fiscal Converter

Convert between ISO weeks and fiscal periods

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Validation Tools

Regex Tester

Test and validate regular expressions

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Cron Expression Humanizer

Convert cron expressions to human-readable descriptions and predict next execution times

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YAML/JSON Linter

Validate and lint YAML and JSON documents

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URL/Email/Domain Validator

Validate URLs, email addresses, and domains

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IP CIDR Validator

Validate and analyze IP addresses and CIDR notation

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Security & Identity

JWT Creator

Create and generate JSON Web Tokens with custom headers, payloads, and signatures

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JWT Decoder

Decode JSON Web Tokens

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UUID Generator

Generate unique identifiers (UUIDs) in various formats for your applications

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Password Generator

Generate secure passwords with customizable options

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Hash Generator

Generate and verify SHA256/MD5 and other cryptographic hashes

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ULID Tool

Generate and decode Universally Unique Lexicographically Sortable Identifiers

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Security Headers Analyzer

Analyze HTTP security headers

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Date & Time Tools

Epoch Converter

Convert between Unix timestamps and human-readable dates

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ISO Date Formatter

Format dates into multiple standard and custom formats

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Timezone Converter

Convert time across multiple timezones with precision

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Date Difference Calculator

Calculate the difference between two dates

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Comparison Tools

File Compare

Advanced side-by-side file comparison with syntax highlighting and intelligent diff detection

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Network & System Tools

Subnet Calculator

Calculate subnet information and IP ranges

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Built for Developers

Designed with productivity and user experience in mind

Beautiful Themes

Multiple themes including dark mode for comfortable coding sessions in any environment.

Real-time Processing

Instant results and real-time updates as you type or modify your data.

Privacy First

All operations happen locally in your browser. Your data never leaves your device.

Developer Focused

Built by developers for developers with attention to workflow and productivity.

30+
Developer Tools
7
Tool Categories
20+
Supported Formats
Instant
Processing Speed

Ready to streamline your development workflow?

Access all your essential developer tools in one place. Fast, secure, and completely free to use.

Free Online Developer Tools

Bit Tools brings together a set of practical, privacy‑friendly utilities for everyday development tasks—from formatting data to testing APIs. Each tool is designed to be fast, accessible, and transparent so you can get results without friction.

Why a toolbox?

Context switching wastes time. Keeping dependable, browser‑based tools at your fingertips speeds up experiments, documentation, and debugging. Our pages are lightweight, localized, and structured for clarity with keyboard shortcuts and dark mode support.

How tools are built

Most operations run entirely in your browser, preserving privacy and reducing latency. When network requests are necessary, they go directly to the endpoint you specify. We follow open standards so behavior matches production systems.

About Bit Tools

We iterate with developer feedback to improve UX and expand features. The site includes runtime SEO and accessible content that doesn’t distract users but helps search engines understand each page’s purpose.

Whether you’re prototyping, reviewing, or teaching, Bit Tools offers reliable, focused pages that respect your time and data.