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OnlyTools

Developer Tools

Tools for developers and programmers

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates with multiple format options.

Developer Tools
client-side

Hash Generator

Generate MD5, SHA1, SHA256, and SHA512 hashes from text

Developer Tools
client-side

Number Base Converter

Convert numbers between different number bases

Number ToolsDeveloper Tools
client-side

Identify Hash Type

Identifies the hashing algorithm used for a given hash string with confidence levels.

Developer Tools
client-side

JSON ↔ CSV Converter

Convert between JSON and CSV data formats

File ToolsDeveloper Tools
client-side

Password Generator

Generate secure passwords with customizable options

Developer Tools
client-side

Random Number Generator

Generate random numbers within a specified range

Number ToolsDeveloper Tools
client-side

JSON Formatter

Format, minify, and validate JSON data

Developer Tools
client-side

Base64 Encoder/Decoder

Encode and decode text using Base64 encoding

Text ToolsDeveloper Tools
client-side

JSON/YAML Converter

Convert between JSON and YAML formats

File ToolsDeveloper Tools
client-side

URL Encoder/Decoder

Encode and decode text for safe use in URLs

Text ToolsDeveloper ToolsLink Tools
client-side

QR Code Generator

Generate QR codes for text, URLs, and other data

Developer Tools
client-side

Color Converter

Convert between HEX, RGB, and HSL color formats

Developer Tools
client-side

JSON ↔ XML Converter

Convert between JSON and XML data formats

File ToolsDeveloper Tools
client-side

Random String Generator

Generate random strings with custom length and character sets

Developer ToolsText Tools
client-side

UUID/GUID Generator

Generate UUIDs and GUIDs in various formats

Developer Tools
client-side

CSV Validator

Validate and check CSV files for errors and issues

File ToolsDeveloper Tools
client-side

Text to Barcode Generator

Generate barcodes from text input

Developer ToolsText Tools
client-side

Regex Tester

Test and debug regular expressions

Developer Tools
client-side

JSON Schema Validator

Validate JSON data against JSON Schema with detailed error reporting

File ToolsDeveloper Tools
client-side

Base64 ↔ URL Converter

Convert between Base64 and URL-safe Base64 encoding

Link ToolsDeveloper Tools
client-side

Encoding Converter

Detect and convert between text encodings like UTF-8, ISO-8859-1

File ToolsDeveloper Tools
client-side

Slug Generator

Convert text into URL-friendly slugs for SEO and web development.

Link ToolsDeveloper Tools
client-side

File Hash Generator

Generate MD5, SHA1, SHA256 hashes for files

File ToolsDeveloper Tools
client-side

Slug Decoder

Convert URL slugs back to human-readable text format

Link ToolsDeveloper Tools
client-side

Name

Check and validate MIME types of files

File ToolsDeveloper Tools
client-side

Checksum Verifier

Verify file integrity using MD5, SHA1, SHA256 checksums

File ToolsDeveloper Tools
client-side

Hex Viewer

View files in hexadecimal format

File ToolsDeveloper Tools
client-side

HTML Escape/Unescape

Escape and unescape HTML entities

Text ToolsDeveloper Tools
client-side

Binary Viewer

View file contents in binary format

File ToolsDeveloper Tools
client-side

URL Normalizer

Normalize and standardize URLs for consistency

Link ToolsDeveloper Tools
client-side

Image Metadata Viewer

View detailed metadata and EXIF data from your images

Image ToolsDeveloper Tools
client-side

Sprite Sheet Generator

Combine multiple images into a single sprite sheet for games and animations

Image ToolsDeveloper Tools
client-side

Image Metadata Remover

Remove EXIF data and metadata from your images

Image ToolsDeveloper Tools
client-side

Favicon Generator

Generate favicons in multiple sizes from your images

Image ToolsDeveloper Tools
client-side

URL Length Checker

Check URL length for SEO optimization and readability

Link ToolsDeveloper Tools
client-side

Base64 ↔ Image Converter

Convert images to Base64 encoding and decode Base64 strings back to images

Image ToolsDeveloper Tools
client-side

HTML Link Extractor

Extract all links from pasted HTML content

Link ToolsDeveloper Tools
client-side

Text Link Extractor

Extract all URLs from plain text

Link ToolsDeveloper Tools
client-side

ZIP Extractor

Extract files from ZIP archives

File ToolsDeveloper Tools
client-side

ZIP Creator

Create ZIP archives from files

File ToolsDeveloper Tools
client-side

TAR/GZIP Extractor

Extract files from TAR and GZIP archives

File ToolsDeveloper Tools
client-side

Image Format Converter

Convert images between different formats (JPEG, PNG, WebP)

Image ToolsDeveloper Tools
client-side

Timestamp Converter

Convert between Unix timestamps and human-readable dates

Developer ToolsNumber Tools
client-side

Graph Plotter 2D

Plot mathematical functions on an interactive 2D graph

Developer Tools
client-side

Broken Link Checker

Identify malformed links missing protocol or containing spaces

Link ToolsDeveloper Tools
client-side

Regex Escape/Unescape

Escape and unescape special characters for regular expressions

Developer Tools
client-side

HTML Entity Counter

Count and analyze HTML entities in text

Text ToolsDeveloper Tools
client-side

Short vs Long URL Comparator

Compare length difference between original and shortened URLs

Link ToolsDeveloper Tools
client-side

QR Code Generator

Generate real QR codes from URLs, text, phone numbers, and more

Link ToolsDeveloper Tools
client-side

QR Code Decoder

Decode QR code images back to URLs or text

Link ToolsDeveloper Tools
client-side

Character Set Validation

Validate text against specific character sets

Text ToolsDeveloper Tools
client-side

UTM Builder

Build UTM parameters for URL tracking

Link ToolsDeveloper Tools
client-side

JWT Decoder

Decode JSON Web Tokens into header, payload, and signature

Developer Tools
client-side

URL Query Builder

Build and modify URL query parameters

Link ToolsDeveloper Tools
client-side

HMAC Generator

Generate HMAC (Hash-based Message Authentication Code) with various algorithms

Developer Tools
client-side

Password Strength Checker

Analyze password strength, entropy, and security with detailed feedback

Developer Tools
client-side

Regex Pattern Builder

Build and test regular expressions with common patterns for emails, dates, numbers, and more

Developer Tools
client-side

Escape Sequence Converter

Convert text to escaped forms for JSON, JavaScript, Python, SQL, HTML, XML, CSV, and URL

Developer ToolsText Tools
client-side

LaTeX Equation Renderer

Render LaTeX mathematical equations and formulas with live preview

Developer Tools
client-side

Matrix Calculator

Perform matrix arithmetic operations including addition, multiplication, determinant, and inverse

Number ToolsDeveloper Tools
client-side

Complex Number Calculator

Perform arithmetic operations with complex numbers including addition, multiplication, and more

Number ToolsDeveloper Tools
client-side

Big Integer Calculator

Perform arithmetic operations with arbitrarily large integers beyond JavaScript's number limits

Number ToolsDeveloper Tools
client-side

Code Prettifier

Format and beautify code in various languages

Developer ToolsText Tools
client-side

HTTP Header Parser

Parse and analyze HTTP headers from requests and responses with detailed descriptions

Developer Tools
client-side

Cron Expression Parser

Parse cron expressions and get human-readable descriptions with next run times

Developer Tools
client-side

Syntax Highlighter

Add syntax highlighting to code

Developer ToolsText Tools
client-side

HTML Previewer

Preview HTML code in a sandboxed iframe with live updates and example templates

Developer ToolsText Tools
client-side

CSS Gradient Generator

Create beautiful CSS gradients with visual editor and copy-ready code

Developer Tools
client-side

Encrypt/Decrypt

Encrypt and decrypt text with various algorithms

Developer Tools
client-side

Cron Expression Generator

Generate cron expressions with visual controls for task scheduling

Developer Tools
client-side

Format JSON

Pretty-print, minify, validate, and format JSON data with customizable options.

Developer Tools
client-side

Timezone Converter

Convert times between different timezones

Developer Tools
client-side

Mojibake Fixer

Fix garbled text caused by character encoding issues

Text ToolsDeveloper Tools
client-side

Git Ignore Generator

Generate .gitignore files with predefined templates

Developer Tools
client-side

Epoch Time Calculator

Convert between Unix timestamps and human-readable dates

Developer ToolsNumber Tools
client-side

Environment Variable Formatter

Create and format .env files with environment variables

Developer Tools
client-side

Docker Ignore Generator

Generate .dockerignore files with predefined templates

Developer Tools
client-side

CORS Header Generator

Generate correct Access-Control-Allow-* headers for CORS

Developer Tools
client-side

Domain Parser

Extract domain, subdomain, TLD, and other URL components

Developer ToolsLink Tools
client-side

Prime Checker

Check if a number is prime and find its factors

Number ToolsDeveloper Tools
client-side

Prime Number Generator

Generate list of prime numbers

Number ToolsDeveloper Tools
client-side

IP Address Validator

Validate IPv4 and IPv6 addresses with detailed information

Developer ToolsLink Tools
client-side

Factorial Calculator

Calculate n! for any integer

Number ToolsDeveloper Tools
client-side

Subnet Calculator

Calculate subnet ranges, masks, and usable host addresses

Developer ToolsLink Tools
client-side

GCD & LCM Calculator

Calculate Greatest Common Divisor and Least Common Multiple

Number ToolsDeveloper Tools
client-side

Ping Simulator

Mock ping tool for network latency demonstration and testing

Developer ToolsLink Tools
client-side

Modulo Calculator

Calculate the remainder after division (modulo operation)

Number ToolsDeveloper Tools
client-side

DNS Record Formatter

Generate sample DNS record snippets (A, CNAME, MX, TXT)

Developer ToolsLink Tools
client-side

WHOIS Lookup Parser

Parse and format raw WHOIS text data into structured information

Developer ToolsLink Tools
client-side

Port Number Reference

Comprehensive reference for common TCP/UDP port numbers

Developer ToolsLink Tools
client-side

ASCII Table Reference

Complete ASCII character table with codes and descriptions

Developer Tools
client-side

Fibonacci Sequence Generator

Generate Fibonacci sequences up to any specified limit

Number ToolsDeveloper Tools
client-side

Unicode Character Explorer

Browse Unicode characters with hex codes, categories, and descriptions

Developer Tools
client-side

HTTP Status Code Reference

Comprehensive reference for HTTP status codes with descriptions

Developer Tools
client-side

MIME Type Lookup

Search and lookup official MIME types for file extensions

Developer Tools
client-side

Regex Library Explorer

Browse and explore prebuilt regex patterns for common use cases

Developer Tools
client-side

Random API Mock Generator

Generate fake JSON API responses for testing and development

Developer Tools
client-side

Exponents & Powers Calculator

Calculate powers and exponents

Number ToolsDeveloper Tools
client-side

Root Calculator

Calculate nth roots of numbers

Number ToolsDeveloper Tools
client-side

Logarithm Calculator

Calculate logarithms with any base

Number ToolsDeveloper Tools
client-side

Scientific Notation Converter

Convert between standard numbers and scientific notation

Number ToolsDeveloper Tools
client-side

Rounding Tool

Round numbers to decimal places

Number ToolsDeveloper Tools
client-side

Significant Figures Tool

Round numbers to significant figures

Number ToolsDeveloper Tools
client-side

Fraction Simplifier

Simplify fractions to lowest terms

Number ToolsDeveloper Tools
client-side

Fraction-Decimal Converter

Convert between fractions and decimals

Number ToolsDeveloper Tools
client-side

Mixed Number Converter

Convert between improper fractions and mixed numbers

Number ToolsDeveloper Tools
client-side

Unit Circle Angle Converter

Convert angles between different units

Number ToolsDeveloper Tools
client-side

Pythagorean Theorem Calculator

Calculate missing sides of right triangles

Number ToolsDeveloper Tools
client-side

Quadratic Equation Solver

Solve ax²+bx+c=0 using quadratic formula

Number ToolsDeveloper Tools
client-side

Why Choose Our Developer Tools?

Professional Quality

Built with enterprise-grade reliability and accuracy for professional use.

Completely Free

All tools are 100% free to use with no registration required, no hidden costs, and no usage limits.

Privacy-First

All processing happens in your browser - your data never leaves your device, ensuring complete privacy and security.

Easy to Use

Intuitive interface designed for users of all technical skill levels.