InsightHub
Free Online Tools

140+ Free ToolsFor Developers & Everyone

Access 140+ powerful, free online tools. Format JSON, convert text, resize images, manipulate PDFs, validate HTML, optimize SEO, and much more. All tools work instantly in your browser.

Featured Tools

JSON Formatter

What is a JSON formatter? This free online tool formats and beautifies JSON data with proper indentation and syntax highlighting, making it easy to read and understand. Perfect for developers working with APIs, configuration files, or debugging JSON responses. Use it to transform messy, minified JSON into clean, readable code instantly in your browser.

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JSON Validator

Validate JSON syntax and check for errors instantly with this free online JSON validator. This tool helps developers identify syntax errors, missing commas, unclosed brackets, and other common JSON issues before they cause problems in production. Essential for debugging API responses, configuration files, and data validation workflows.

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JSON Minifier

Minify JSON by removing whitespace and unnecessary characters to reduce file size and improve performance. This free tool is perfect for production environments where smaller file sizes matter for faster API responses and reduced bandwidth usage. Ideal for web developers optimizing JSON payloads for mobile apps and web services.

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JSON to CSV

Convert JSON data to CSV format quickly and easily with this free online converter. Perfect for exporting JSON API responses to Excel, Google Sheets, or other spreadsheet applications. This tool automatically handles nested JSON structures and arrays, making it ideal for data analysts, developers, and anyone working with structured data.

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JSON to XML

Convert JSON data to XML format instantly with this free online converter. Essential for developers working with legacy systems, SOAP APIs, or enterprise applications that require XML format. This tool handles complex nested structures and automatically generates proper XML tags, making data transformation seamless.

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JSON to YAML

Convert JSON data to YAML format with this free online converter. Perfect for DevOps engineers, developers working with configuration files, Docker Compose, Kubernetes manifests, or CI/CD pipelines. YAML's human-readable format makes configuration management easier, and this tool ensures accurate conversion every time.

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JSON Formatter

JSON Tools

What is a JSON formatter? This free online tool formats and beautifies JSON data with proper indentation and syntax highlighting, making it easy to read and understand. Perfect for developers working with APIs, configuration files, or debugging JSON responses. Use it to transform messy, minified JSON into clean, readable code instantly in your browser.

Client-Side

JSON Validator

JSON Tools

Validate JSON syntax and check for errors instantly with this free online JSON validator. This tool helps developers identify syntax errors, missing commas, unclosed brackets, and other common JSON issues before they cause problems in production. Essential for debugging API responses, configuration files, and data validation workflows.

Client-Side

JSON Minifier

JSON Tools

Minify JSON by removing whitespace and unnecessary characters to reduce file size and improve performance. This free tool is perfect for production environments where smaller file sizes matter for faster API responses and reduced bandwidth usage. Ideal for web developers optimizing JSON payloads for mobile apps and web services.

Client-Side

JSON to CSV

JSON Tools

Convert JSON data to CSV format quickly and easily with this free online converter. Perfect for exporting JSON API responses to Excel, Google Sheets, or other spreadsheet applications. This tool automatically handles nested JSON structures and arrays, making it ideal for data analysts, developers, and anyone working with structured data.

Client-Side

JSON to XML

JSON Tools

Convert JSON data to XML format instantly with this free online converter. Essential for developers working with legacy systems, SOAP APIs, or enterprise applications that require XML format. This tool handles complex nested structures and automatically generates proper XML tags, making data transformation seamless.

Client-Side

JSON to YAML

JSON Tools

Convert JSON data to YAML format with this free online converter. Perfect for DevOps engineers, developers working with configuration files, Docker Compose, Kubernetes manifests, or CI/CD pipelines. YAML's human-readable format makes configuration management easier, and this tool ensures accurate conversion every time.

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JSON Diff

JSON Tools

Compare two JSON objects and highlight differences side-by-side with this free online JSON diff tool. Essential for developers tracking API changes, debugging configuration updates, or reviewing code changes. This tool makes it easy to spot additions, deletions, and modifications in complex JSON structures.

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JSON Path Finder

JSON Tools

Find and extract values from JSON data using JSONPath expressions with this powerful free tool. Similar to XPath for XML, JSONPath allows you to query and navigate complex JSON structures easily. Perfect for developers extracting specific data from large JSON responses, API testing, or data transformation tasks.

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JSON Schema Validator

JSON Tools

Validate JSON data against a JSON Schema to ensure it meets your structure and validation rules. This free tool is essential for API developers, data engineers, and anyone working with structured data validation. Ensure your JSON conforms to expected formats, data types, and constraints before processing.

Client-Side

JSON Merger

JSON Tools

Merge multiple JSON objects into one unified structure with this free online tool. Perfect for combining configuration files, merging API responses, or consolidating data from multiple sources. This tool handles key conflicts intelligently and preserves nested structures, making data integration seamless.

Client-Side

JSON Escape/Unescape

JSON Tools

Escape or unescape special characters in JSON strings to ensure proper encoding and prevent parsing errors. This free tool is essential when embedding JSON in HTML, JavaScript, or other contexts where special characters need escaping. Also useful for decoding escaped JSON strings back to their original format.

Client-Side

JSON Key Sorter

JSON Tools

Sort JSON object keys alphabetically to organize and standardize your JSON data structure. This free tool helps maintain consistency across configuration files, makes comparisons easier, and improves code readability. Perfect for developers working with large JSON files or maintaining consistent data formats.

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JSON to TypeScript

JSON Tools

Generate TypeScript interfaces and type definitions from JSON data automatically with this free online tool. Save hours of manual typing when working with TypeScript projects, React components, or Node.js applications. This tool analyzes your JSON structure and creates accurate, type-safe interfaces that match your data exactly.

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JSON to SQL

JSON Tools

Convert JSON data to SQL INSERT statements quickly and accurately with this free online converter. Perfect for database administrators, developers migrating data, or anyone needing to import JSON data into SQL databases. This tool generates properly formatted INSERT statements that are ready to execute in your database.

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JSON Tree Viewer

JSON Tools

Visualize JSON data in an interactive tree structure that makes complex nested data easy to navigate and understand. This free tool is perfect for exploring large JSON files, debugging API responses, or teaching JSON structure. The visual tree format helps you quickly locate specific values and understand data relationships.

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Text Case Converter

Text Tools

Convert text between different cases instantly: uppercase, lowercase, title case, sentence case, camelCase, kebab-case, snake_case, and PascalCase. This free online tool is perfect for developers, content creators, and anyone working with code or text formatting. Transform your text with a single click - no coding required!

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Word Counter

Text Tools

Count words, characters, sentences, and paragraphs in text

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Character Counter

Text Tools

Count characters, words, and lines in text

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Text Reverser

Text Tools

Reverse text character by character or word by word

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Remove Duplicates

Text Tools

Remove duplicate lines or words from text

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Sort Text Lines

Text Tools

Sort lines of text alphabetically or numerically

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Find and Replace

Text Tools

Find and replace text with support for regex

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Extract URLs

Text Tools

Extract all URLs from text

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Extract Emails

Text Tools

Extract all email addresses from text

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Extract Numbers

Text Tools

Extract all numbers from text

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Add Line Numbers

Text Tools

Add line numbers to each line of text

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Remove Line Numbers

Text Tools

Remove line numbers from text

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Text to Base64

Text Tools

Encode text to Base64 format

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Base64 to Text

Text Tools

Decode Base64 to text

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Text to Binary

Text Tools

Convert text to binary representation

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Binary to Text

Text Tools

Convert binary to text

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Text to Hex

Text Tools

Convert text to hexadecimal representation

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Hex to Text

Text Tools

Convert hexadecimal to text

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Text to Morse Code

Text Tools

Convert text to Morse code

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Morse Code to Text

Text Tools

Convert Morse code to text

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Text Hash Generator

Text Tools

Generate cryptographic hashes (MD5, SHA1, SHA256, SHA512) from any text instantly with this free online hash generator. Essential for developers working with password hashing, data integrity verification, digital signatures, or security applications. All hashing happens client-side in your browser for maximum security and privacy.

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Slug Generator

Text Tools

Generate URL-friendly slugs from text

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Lorem Ipsum Generator

Text Tools

Generate Lorem Ipsum placeholder text

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Image Resizer

Image Tools

Resize images to specific dimensions while maintaining aspect ratio. Perfect for optimizing images for web, social media, or print. All processing happens in your browser.

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Image Compressor

Image Tools

Compress images to reduce file size while maintaining quality

Image Format Converter

Image Tools

Convert images between JPG, PNG, WebP, AVIF formats

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Image Cropper

Image Tools

Crop images to specific dimensions or aspect ratios

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Image Rotator

Image Tools

Rotate images by 90, 180, or 270 degrees

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Image Watermark

Image Tools

Add text or image watermarks to images with customizable position, opacity, and styling. Protect your images and add branding with professional watermarking.

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Image Filters

Image Tools

Apply professional filters and effects to your images. Choose from grayscale, sepia, invert, vintage, black & white, and sharpen filters with adjustable intensity controls.

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Image to Base64

Image Tools

Convert images to Base64 data URLs instantly. Perfect for embedding images in HTML, CSS, or data URIs. Supports PNG, JPG, GIF, WebP, and more.

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Base64 to Image

Image Tools

Convert Base64 data URLs to images. Decode Base64 strings and download as image files. Perfect for extracting images from Base64 encoded data.

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Image Metadata Extractor

Image Tools

Extract EXIF and other metadata from images. View camera settings, GPS location, creation date, and more. Perfect for photographers and content creators.

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Image Color Picker

Image Tools

Pick colors from images and generate color palettes. Click anywhere on an image to get the exact color value in HEX, RGB, and HSL formats. Perfect for designers and developers.

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Background Remover

Image Tools

Remove backgrounds from images using AI

Image Blur Tool

Image Tools

Apply blur effects to images with adjustable intensity. Perfect for creating privacy effects, background blur, or artistic effects. All processing happens in your browser.

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Brightness & Contrast

Image Tools

Adjust brightness and contrast of images with precise controls. Perfect for photo editing, correcting exposure, and enhancing image quality. All processing happens in your browser.

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Image Collage Maker

Image Tools

Create beautiful collages from multiple images. Choose from grid, horizontal, or vertical layouts. Customize spacing, background color, and grid dimensions for perfect compositions.

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QR Code Generator

Image Tools

Generate QR codes from text, URLs, or any data instantly with this free online QR code generator. Perfect for marketing campaigns, business cards, event tickets, WiFi passwords, or contact information sharing. Customize size, error correction level, and download as PNG or SVG - all without registration or payment.

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QR Code Reader

Image Tools

Read and decode QR codes from images

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PDF to Text

PDF Tools

Extract text content from PDF files

PDF to Image

PDF Tools

Convert PDF pages to images

PDF Merger

PDF Tools

Merge multiple PDF files into one

PDF Splitter

PDF Tools

Split PDF files into multiple files

PDF Compressor

PDF Tools

Compress PDF files to reduce file size

PDF Rotator

PDF Tools

Rotate PDF pages

PDF Watermark

PDF Tools

Add watermarks to PDF files

PDF Page Extractor

PDF Tools

Extract specific pages from PDF files

PDF Page Reorder

PDF Tools

Reorder pages in PDF files

PDF Metadata Editor

PDF Tools

Edit PDF metadata (title, author, subject, etc.)

Text to PDF

PDF Tools

Convert text to PDF format

Image to PDF

PDF Tools

Convert images to PDF format

PDF Password Protector

PDF Tools

Add password protection to PDF files

PDF Password Remover

PDF Tools

Remove password protection from PDF files

PDF Form Filler

PDF Tools

Fill PDF forms programmatically

HTML Formatter

HTML Tools

Format and beautify HTML code

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HTML Minifier

HTML Tools

Minify HTML by removing whitespace and comments

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HTML Validator

HTML Tools

Validate HTML code for errors and warnings

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HTML to Markdown

HTML Tools

Convert HTML to Markdown format

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Markdown to HTML

HTML Tools

Convert Markdown to HTML format

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HTML Entity Encoder/Decoder

HTML Tools

Encode or decode HTML entities

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HTML Tag Remover

HTML Tools

Remove HTML tags from text

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HTML Color Picker

HTML Tools

Pick colors and generate HTML color codes

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HTML Table Generator

HTML Tools

Generate HTML table code from data

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HTML to JSX

HTML Tools

Convert HTML to JSX format

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HTML CSS Inliner

HTML Tools

Inline CSS styles into HTML elements

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HTML Link Extractor

HTML Tools

Extract all links from HTML

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HTML Image Extractor

HTML Tools

Extract all image sources from HTML

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HTML Meta Tag Generator

HTML Tools

Generate comprehensive HTML meta tags for SEO optimization. Create meta tags for search engines, Open Graph tags for social media, and Twitter Cards. Perfect for website developers and SEO specialists.

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HTML Favicon Generator

HTML Tools

Generate favicon HTML code from images. Create favicons in multiple sizes (16x16, 32x32, 48x48, 180x180) and get ready-to-use HTML code for your website.

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Meta Tag Generator

SEO Tools

Generate comprehensive meta tags for SEO optimization including title, description, Open Graph tags, and Twitter Cards. This free tool helps website owners, marketers, and developers create properly formatted meta tags that improve search engine visibility and social media sharing. Includes best practices and character limits for optimal results.

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Sitemap Generator

SEO Tools

Generate XML sitemaps for websites

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Robots.txt Generator

SEO Tools

Generate robots.txt file for search engines

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Schema Markup Generator

SEO Tools

Generate JSON-LD schema markup for structured data

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Open Graph Tag Generator

SEO Tools

Generate Open Graph meta tags for social media

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Twitter Card Generator

SEO Tools

Generate Twitter Card meta tags

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URL Slug Generator

SEO Tools

Generate SEO-friendly URL slugs

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Keyword Density Checker

SEO Tools

Check keyword density in text content

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Readability Score Calculator

SEO Tools

Calculate readability scores (Flesch, SMOG, etc.)

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Heading Structure Analyzer

SEO Tools

Analyze HTML heading structure (H1-H6)

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Image Alt Text Generator

SEO Tools

Generate SEO-friendly alt text for images

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Canonical URL Generator

SEO Tools

Generate canonical URL tags

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Redirect Checker

SEO Tools

Check HTTP redirects and status codes

Page Speed Analyzer

SEO Tools

Analyze page load speed and performance

Backlink Checker

SEO Tools

Check backlinks for a URL

Image Upload & Transform

Cloudinary Tools

Upload images to Cloudinary and apply transformations

Image Optimization Wizard

Cloudinary Tools

Optimize images with Cloudinary's optimization features

Responsive Image Generator

Cloudinary Tools

Generate responsive image URLs with srcset

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Image Transformation Builder

Cloudinary Tools

Build Cloudinary transformation URLs visually

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Video Upload & Transform

Cloudinary Tools

Upload and transform videos with Cloudinary

Image Effects Gallery

Cloudinary Tools

Apply Cloudinary effects to images

Image Overlay Tool

Cloudinary Tools

Add image overlays using Cloudinary

Image Text Overlay

Cloudinary Tools

Add text overlays to images with Cloudinary

Crop & Resize Wizard

Cloudinary Tools

Crop and resize images with Cloudinary transformations

Image Format Converter

Cloudinary Tools

Convert image formats using Cloudinary

Image Quality Optimizer

Cloudinary Tools

Optimize image quality with Cloudinary

Image Delivery URL Generator

Cloudinary Tools

Generate Cloudinary delivery URLs with transformations. Build optimized image URLs with resizing, cropping, quality adjustments, and effects. Perfect for developers using Cloudinary.

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Color Picker

Color Tools

Pick colors and get hex, RGB, HSL values

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Color Palette Generator

Color Tools

Generate color palettes and schemes

Client-Side

Color Converter

Color Tools

Convert between RGB, HEX, HSL color formats

Client-Side

Color Shades Generator

Color Tools

Generate color shades and tints

Client-Side

Color Contrast Checker

Color Tools

Check color contrast for accessibility

Client-Side

URL Encoder/Decoder

Encoding Tools

Encode or decode URL-encoded strings

Client-Side

Base64 Encoder/Decoder

Encoding Tools

Encode or decode Base64 strings

Client-Side

HTML Entity Encoder/Decoder

Encoding Tools

Encode or decode HTML entities

Client-Side

Unicode Encoder/Decoder

Encoding Tools

Encode or decode Unicode strings

Client-Side

JWT Decoder

Encoding Tools

Decode JWT tokens and view payload

Client-Side

MD5 Hash Generator

Hash Tools

Generate MD5 hash from text

Client-Side

SHA1 Hash Generator

Hash Tools

Generate SHA1 hash from text

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SHA256 Hash Generator

Hash Tools

Generate SHA256 hash from text

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SHA512 Hash Generator

Hash Tools

Generate SHA512 hash from text

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BCrypt Hash Generator

Hash Tools

Generate BCrypt hashes from text securely. BCrypt is a strong password hashing algorithm used for storing passwords. Perfect for developers implementing authentication systems.

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QR Code Generator

QR Code Tools

Generate QR codes from text or URLs instantly. Create scannable QR codes for websites, contact information, WiFi passwords, and more. Customize size and error correction level for optimal scanning.

Client-Side

QR Code Reader

QR Code Tools

Read and decode QR codes from images

Client-Side

QR Code Customizer

QR Code Tools

Generate customized QR codes with colors and logos

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Timestamp Converter

Date & Time Tools

Convert between Unix timestamps and dates instantly. Perfect for developers working with APIs, log files, databases, and scheduling systems. Supports both timestamp-to-date and date-to-timestamp conversions.

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Date Calculator

Date & Time Tools

Calculate date differences and add/subtract time

Client-Side

Time Zone Converter

Date & Time Tools

Convert times between different time zones

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Age Calculator

Date & Time Tools

Calculate age from birth date

Client-Side

Countdown Timer

Date & Time Tools

Create countdown timers for events

Client-Side

Length Converter

Unit Converters

Convert between length units (meters, feet, inches, etc.)

Client-Side

Weight Converter

Unit Converters

Convert between weight units (kg, lbs, oz, etc.)

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Temperature Converter

Unit Converters

Convert between Celsius, Fahrenheit, and Kelvin

Client-Side

Volume Converter

Unit Converters

Convert between volume units (liters, gallons, etc.)

Client-Side

Speed Converter

Unit Converters

Convert between speed units (km/h, mph, m/s, etc.)

Client-Side

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