What is DevSwiftTools?

DevSwiftTools is a comprehensive suite of developer productivity tools designed to streamline your workflow. Every tool runs entirely in your browser with zero server-side processing, ensuring complete privacy and lightning-fast performance.

Privacy First

All processing happens locally in your browser. Your data never leaves your device, and we never see, store, or transmit your information.

Blazing Fast

Client-side processing means instant results with zero network latency. No waiting for server responses or upload times.

Developer First

Built by developers, for developers. Clean interfaces, keyboard shortcuts, and powerful features designed for productivity.

100% Free

All tools are completely free with no limitations, no accounts, and no hidden costs. Forever.

How to Use This Documentation

This documentation is organized by tool category. Each tool section includes:

  • Description: What the tool does and why you'd use it
  • Features: Complete list of capabilities
  • Use Cases: Real-world scenarios and applications
  • Options: Configuration and customization settings
  • Examples: Input/output examples with explanations

Formatters

Beautify and validate code with smart formatting options

JSON Formatter

A powerful JSON formatter that beautifies, validates, minifies, and sorts JSON data. Features real-time validation, customizable indentation, and smart formatting options. Perfect for developers working with APIs, configuration files, and data structures.

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Features

  • Format and beautify JSON with customizable indentation (2, 4 spaces, or tabs)
  • Minify JSON to remove all unnecessary whitespace
  • Real-time syntax validation with detailed error messages
  • Sort object keys alphabetically (ascending/descending)
  • Syntax highlighting for improved readability
  • Auto-format on paste option
  • Line numbers for easy navigation
  • One-click copy to clipboard

Use Cases

Debugging API responses

Formatting configuration files

Validating JSON structure before deployment

Cleaning up minified JSON for readability

Sorting JSON keys for consistent formatting

Preparing JSON for documentation

Configuration Options

Auto Format

toggle

Automatically format JSON as you type

Default: false

Smart Format

toggle

Intelligently preserve certain formatting patterns

Default: true

Indentation

select

Number of spaces for indentation

Default: 2

Sort Keys

select

Sort object keys alphabetically

Default: none

Minify

toggle

Remove all whitespace and line breaks

Default: false

Examples

Basic Formatting

Convert compact JSON to readable format

Input
{"name":"John","age":30,"city":"New York"}
Output
{
  "name": "John",
  "age": 30,
  "city": "New York"
}

Sort Keys

Alphabetically sort object keys

Input
{"z": 1, "a": 2, "m": 3}
Output
{
  "a": 2,
  "m": 3,
  "z": 1
}

Important Notes

  • All processing happens client-side in your browser
  • Supports large JSON files (up to 10MB tested)
  • Preserves data types (numbers, booleans, null)

XML Formatter

Professional XML formatter with validation, syntax highlighting, and customizable formatting options. Handles complex XML structures including namespaces, attributes, and CDATA sections.

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Features

  • Format and beautify XML documents
  • Validate XML syntax
  • Customizable indentation levels
  • Syntax highlighting
  • Preserve or normalize whitespace
  • Handle XML namespaces correctly
  • CDATA section support

Use Cases

Formatting API responses (SOAP, RSS, Atom)

Cleaning up configuration files

Preparing XML for documentation

Debugging XML structure issues

Configuration Options

Indentation

select

Spaces for each level

Default: 2

Preserve Whitespace

toggle

Keep original whitespace in text nodes

Default: false

Examples

Basic XML Formatting

Input
<root><person><name>John</name><age>30</age></person></root>
Output
<root>
  <person>
    <name>John</name>
    <age>30</age>
  </person>
</root>

YAML Formatter

Comprehensive YAML formatter supporting YAML 1.2 specification. Format, validate, and beautify YAML configuration files with intelligent indentation and syntax validation.

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Features

  • Format YAML with consistent indentation
  • Validate YAML syntax
  • Syntax highlighting
  • Support for complex YAML features (anchors, aliases, multiline strings)
  • Configurable indentation (2 or 4 spaces)

Use Cases

Formatting Kubernetes manifests

Cleaning up Docker Compose files

Validating CI/CD configuration (GitHub Actions, GitLab CI)

Organizing Ansible playbooks

Configuration Options

Indentation

select

Spaces for each level

Default: 2

Examples

Kubernetes Manifest

Input
apiVersion: v1
kind: Pod
metadata:
name: nginx
Output
apiVersion: v1
kind: Pod
metadata:
  name: nginx

SQL Formatter

Advanced SQL formatter supporting multiple SQL dialects (MySQL, PostgreSQL, SQL Server, Oracle). Format complex queries with proper indentation, keyword capitalization, and syntax highlighting.

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Features

  • Format SQL queries with proper indentation
  • Support for multiple SQL dialects
  • Keyword capitalization options
  • Syntax highlighting
  • Handle complex nested queries
  • Format CTEs and window functions

Use Cases

Cleaning up minified SQL

Standardizing query formatting across teams

Debugging complex joins and subqueries

Preparing SQL for documentation

Configuration Options

Indentation

select

Spaces for indentation

Default: 2

Uppercase Keywords

toggle

Convert SQL keywords to uppercase

Default: true

HTML Formatter

Professional HTML formatter that beautifies HTML markup with configurable indentation, handles inline vs. block elements intelligently, and preserves important formatting.

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Features

  • Format HTML with proper nesting
  • Intelligent inline vs. block element handling
  • Preserve or normalize whitespace
  • Syntax highlighting
  • Self-closing tag support

Use Cases

Cleaning up minified HTML

Formatting email templates

Preparing HTML for code reviews

JSON5 Formatter

Format and validate JSON5, the more human-friendly JSON variant that supports comments, trailing commas, unquoted keys, and more.

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Features

  • Format JSON5 with all extended syntax features
  • Preserve comments (single-line and multi-line)
  • Support trailing commas
  • Unquoted keys support
  • Syntax highlighting

Use Cases

Formatting configuration files (tsconfig.json, .babelrc)

Working with package.json comments

Converters

Convert between different data formats seamlessly

JSON to SQL Converter

Transform JSON arrays and objects into SQL INSERT statements. Automatically detects schema, handles data types, and generates production-ready SQL code for any database.

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Features

  • Auto-detect table schema from JSON structure
  • Generate CREATE TABLE statements
  • Generate INSERT statements with proper escaping
  • Support for nested objects (flattening options)
  • Handle arrays and complex data types
  • Multiple SQL dialect support

Use Cases

Importing JSON API data into databases

Migrating data from NoSQL to SQL databases

Generating test data for SQL databases

Creating SQL from configuration files

Examples

Simple JSON to SQL

Input
[{"id": 1, "name": "John", "age": 30}]
Output
CREATE TABLE users (
  id INT,
  name VARCHAR(255),
  age INT
);

INSERT INTO users (id, name, age) VALUES (1, 'John', 30);

JSON to CSV Converter

Convert JSON data to CSV format with customizable delimiters, quote characters, and header options. Perfect for exporting data to Excel or other spreadsheet applications.

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Features

  • Convert JSON arrays to CSV
  • Automatic header detection
  • Custom delimiter support
  • Handle nested objects
  • Escape special characters
  • Download as .csv file

Use Cases

Exporting API data to Excel

Creating reports from JSON logs

Data analysis and visualization

Base64 to Image Converter

Convert Base64-encoded strings to images. Supports all major image formats (PNG, JPG, GIF, SVG, WebP) with preview and download capabilities.

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Features

  • Decode Base64 to image
  • Preview decoded image
  • Download in original format
  • Support for all image formats
  • Automatic format detection

Use Cases

Extracting images from Base64 data URLs

Debugging embedded images in HTML/CSS

Converting data URIs to files

Markdown to HTML Converter

Professional Markdown to HTML converter supporting GitHub-flavored Markdown, tables, code blocks with syntax highlighting, and custom styling options.

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Features

  • GitHub-flavored Markdown support
  • Syntax highlighting for code blocks
  • Table support
  • Task list support
  • Emoji support
  • Custom CSS styling options

Use Cases

Converting README files for websites

Generating HTML from documentation

Creating blog posts from Markdown

Unit Converter

Comprehensive unit converter supporting length, weight, temperature, area, volume, time, and more. Precise conversions with real-time results.

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Features

  • Multiple unit categories (length, weight, temperature, etc.)
  • Real-time conversion
  • High precision calculations
  • Common and scientific units

Use Cases

Converting metric to imperial units

Temperature conversions

Scientific calculations

YAML to JSON Converter

Convert YAML format to JSON with proper formatting. Maintains data integrity and handles complex structures including anchors, aliases, and multiline strings.

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Features

  • Convert YAML to JSON
  • Preserve data types
  • Handle complex structures
  • Syntax validation
  • Pretty print JSON output

Use Cases

Converting config files to JSON

API format conversions

Documentation format changes

JSON to YAML Converter

Convert JSON format to YAML with proper formatting. Maintains data integrity and creates clean, readable YAML output.

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Features

  • Convert JSON to YAML
  • Preserve data types
  • Handle complex structures
  • Syntax validation
  • Clean YAML formatting

Use Cases

Converting config files to YAML

Creating Kubernetes configs

Docker Compose file generation

CSV to JSON Converter

Convert CSV data to JSON format with automatic header detection and type inference. Perfect for importing spreadsheet data into applications.

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Features

  • Convert CSV to JSON arrays
  • Automatic header detection
  • Type inference (numbers, booleans, null)
  • Handle quoted fields
  • Escape special characters
  • Pretty print JSON output

Use Cases

Importing Excel data to applications

Converting spreadsheet exports

Data migration and transformation

Data & Security

Generate secure data, hashes, and encryption utilities

Schema Generator

Powerful schema generator that analyzes JSON data and creates TypeScript interfaces, JSON Schema, GraphQL types, and database schemas. Perfect for type-safe development.

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Features

  • Generate TypeScript interfaces from JSON
  • Create JSON Schema (draft-07)
  • Generate GraphQL types
  • Create SQL CREATE TABLE statements
  • Infer types from sample data
  • Handle nested structures and arrays

Use Cases

Creating TypeScript types from API responses

Generating validation schemas

Documenting API contracts

Database schema design

Examples

JSON to TypeScript

Input
{"name": "John", "age": 30, "active": true}
Output
interface Root {
  name: string;
  age: number;
  active: boolean;
}

Mock Data Generator

Generate realistic mock data including names, emails, addresses, phone numbers, dates, and custom formats. Perfect for testing, prototyping, and database seeding.

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Features

  • Generate realistic user data (names, emails, addresses)
  • Custom data templates
  • Multiple output formats (JSON, CSV, SQL)
  • Bulk generation (up to 10,000 records)
  • Locale support for international data
  • Custom field types and patterns

Use Cases

Creating test data for development

Database seeding

API testing and mocking

UI prototyping

UUID/GUID Generator

Generate cryptographically secure UUIDs (Universally Unique Identifiers) supporting multiple versions: v1 (timestamp-based), v4 (random), and v5 (namespace-based).

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Features

  • Generate UUID v1 (timestamp-based)
  • Generate UUID v4 (random)
  • Generate UUID v5 (namespace-based)
  • Bulk generation
  • Copy individual or all UUIDs
  • Validation of existing UUIDs

Use Cases

Database primary keys

Session IDs

Transaction identifiers

File naming

Password Generator

Generate cryptographically secure random passwords with customizable length, character sets, and complexity requirements. Includes password strength meter and entropy calculation.

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Features

  • Customizable password length
  • Character set options (uppercase, lowercase, numbers, symbols)
  • Exclude ambiguous characters option
  • Password strength indicator
  • Bulk generation
  • Passphrase generation
  • Entropy calculation

Use Cases

Creating secure user passwords

Generating API keys

Database credentials

WiFi passwords

Base64 Encoder/Decoder

Encode text and files to Base64 format and decode Base64 strings back to original content. Supports text encoding and file uploads.

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Features

  • Encode text to Base64
  • Decode Base64 to text
  • Encode files to Base64
  • URL-safe Base64 encoding
  • Auto-detect and decode

Use Cases

Encoding credentials for HTTP Basic Auth

Embedding small images in CSS/HTML

Data URLs for inline resources

Email attachment encoding

Hash Generator

Generate cryptographic hashes using industry-standard algorithms including MD5, SHA-1, SHA-256, SHA-512, and more. Includes HMAC support for message authentication.

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Features

  • Multiple hash algorithms (MD5, SHA-1, SHA-256, SHA-512)
  • HMAC support with custom keys
  • File hashing support
  • Hex and Base64 output formats
  • Real-time hash generation

Use Cases

Verifying file integrity

Password hashing (development only)

Generating checksums

Digital signatures

Important Notes

  • MD5 and SHA-1 are not recommended for security-critical applications
  • Use SHA-256 or SHA-512 for production systems

Development

Essential developer utilities and helpers

Diff Checker

Advanced diff tool that compares two text inputs side-by-side with line-by-line and word-level highlighting. Perfect for code reviews, document comparison, and debugging.

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Features

  • Side-by-side text comparison
  • Line-by-line diff highlighting
  • Word-level change detection
  • Syntax highlighting for code
  • Swap left/right panels
  • Export diff results

Use Cases

Code review and comparison

Document version comparison

Configuration file changes

Debugging text differences

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