Developer Tools
JSON Formatter
Format, validate, and beautify JSON data
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Regex101
Build and test regular expressions with explanations
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Base64 Encode/Decode
Encode or decode Base64 strings
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CSS Minifier
Compress CSS files for faster loading
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JSFiddle
Online code playground for HTML, CSS, and JavaScript
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Can I Use
Browser compatibility tables for web technologies
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CodePen
Social development environment for front-end code
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JS Bin
Collaborative JavaScript debugging tool
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Postman
API development and testing platform
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Swagger Editor
Design and document APIs with OpenAPI
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Image Tools
TinyPNG
Compress PNG and JPEG images losslessly
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Remove.bg
Remove image backgrounds automatically
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Squoosh
Image compression by Google with visual comparison
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Unsplash
Free high-resolution stock photos
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Favicon Generator
Create favicons from images or text
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ILoveIMG
Edit images — compress, resize, crop, convert
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Photopea
Free online photo editor similar to Photoshop
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Compressor.io
Optimize images for web with drag-and-drop
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RedKetchup Image Resizer
Batch resize images online for free
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Text & Writing
Hemingway Editor
Make your writing clear and readable
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WordCounter
Count words, characters, and reading time
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Lorem Ipsum Generator
Generate placeholder text for designs
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Diff Checker
Compare two texts and find differences
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Grammar Check
Free grammar and spell checking tool
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Case Converter
Convert text between uppercase, lowercase, title case
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Remove Duplicates
Remove duplicate lines from text lists
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Word Reference
Free multilingual translation dictionary
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SEO & Marketing
Google Search Console
Monitor your site's presence in search results
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PageSpeed Insights
Analyze your site's performance and get tips
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Ubersuggest
Free keyword research and SEO analysis
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Schema Markup Generator
Create structured data for better search results
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Google Trends
Explore search trend data for any topic
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AnswerThePublic
Discover what questions people search for
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Screaming Frog SEO Spider
Crawl websites and analyze SEO issues (free up to 500 URLs)
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Security & Privacy
Have I Been Pwned
Check if your email has been in a data breach
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VirusTotal
Scan files and URLs for malware
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Password Strength Checker
Test how strong your passwords are
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Bitwarden
Free open-source password manager
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PrivacyTools
Tools and knowledge for protecting your privacy
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HTTPS Checker
Verify SSL certificate status for any website
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File Converters
CloudConvert
Convert between 200+ file formats online
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Zamzar
Online file conversion for documents, images, video
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PDF to Word
Convert PDF documents to editable Word files
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SmallPDF
Compress, convert, merge, and split PDFs
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ILovePDF
Every PDF tool you need — merge, split, compress, convert
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Convertio
Free online file converter for any format
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HandBrake
Free open-source video transcoder
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Audacity
Free open-source audio editor and recorder
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Calculators & Utilities
Wolfram Alpha
Computational knowledge engine for math and science
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Desmos
Free online graphing calculator
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Unit Converter
Convert between units of measurement
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Epoch Converter
Convert Unix timestamps to human-readable dates
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QR Code Generator
Create free QR codes for any URL or text
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Color Picker
Pick colors and get hex, RGB, and HSL values
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Time Zone Converter
Compare times across different time zones
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