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CrazyTools4U — 170+ Free Online Web Tools & SEO Audit Suite

Welcome to CrazyTools4U, the ultimate collection of private, client-side browser tools. All tools execute locally on your device using WebAssembly, JavaScript Canvas, and native browser APIs with zero file uploads to any external server.

Image Utilities — Free Online Utilities

Convert, compress, resize, edit, crop, and vectorize images offline in your browser with zero server uploads.

  • Image to Text (OCR)

    Free online image to text (ocr) executing 100% client-side with zero data tracking.

  • Image Converter

    Free online image converter executing 100% client-side with zero data tracking.

  • Image Compressor

    Free online image compressor executing 100% client-side with zero data tracking.

  • Background Remover

    Free online background remover executing 100% client-side with zero data tracking.

  • SVG to PNG Converter

    Free online svg to png converter executing 100% client-side with zero data tracking.

  • PNG to SVG Vectorizer

    Free online png to svg vectorizer executing 100% client-side with zero data tracking.

  • Image Resizer & Cropper

    Free online image resizer & cropper executing 100% client-side with zero data tracking.

  • Favicon Suite Generator

    Free online favicon suite generator executing 100% client-side with zero data tracking.

  • Image Color Picker

    Free online image color picker executing 100% client-side with zero data tracking.

  • Dynamic Meme Generator

    Free online dynamic meme generator executing 100% client-side with zero data tracking.

  • Watermark Overlay Tool

    Free online watermark overlay tool executing 100% client-side with zero data tracking.

  • Photo Filter Studio

    Free online photo filter studio executing 100% client-side with zero data tracking.

  • Base64 Image Encoder

    Free online base64 image encoder executing 100% client-side with zero data tracking.

  • Gaussian Blur Filter

    Free online gaussian blur filter executing 100% client-side with zero data tracking.

  • WebP Optimization Suite

    Free online webp optimization suite executing 100% client-side with zero data tracking.

  • Image Divider / Splitter

    Free online image divider / splitter executing 100% client-side with zero data tracking.

  • EXIF Metadata Stripper

    Free online exif metadata stripper executing 100% client-side with zero data tracking.

  • Image Upscaler (Up to 8x)

    Free online image upscaler (up to 8x) executing 100% client-side with zero data tracking.

  • GIF Maker & Assembler

    Free online gif maker & assembler executing 100% client-side with zero data tracking.

  • Rounded Corner Mask

    Free online rounded corner mask executing 100% client-side with zero data tracking.

  • Gradient Background Generator

    Free online gradient background generator executing 100% client-side with zero data tracking.

Audio & Media — Free Online Utilities

Convert audio formats, extract sound from videos, and transcode media locally using FFmpeg WebAssembly.

  • Audio Converter

    Free online audio converter executing 100% client-side with zero data tracking.

  • Video to Audio

    Free online video to audio executing 100% client-side with zero data tracking.

  • Universal Media Converter

    Free online universal media converter executing 100% client-side with zero data tracking.

PDF Utilities — Free Online Utilities

Merge, split, compress, protect, decrypt, watermark, and convert PDF documents in your browser with 100% data confidentiality.

  • Merge PDF

    Free online merge pdf executing 100% client-side with zero data tracking.

  • Split PDF

    Free online split pdf executing 100% client-side with zero data tracking.

  • Compress PDF Document

    Free online compress pdf document executing 100% client-side with zero data tracking.

  • PDF to JPG Extractor

    Free online pdf to jpg extractor executing 100% client-side with zero data tracking.

  • JPG to PDF Creator

    Free online jpg to pdf creator executing 100% client-side with zero data tracking.

  • PDF to Text Scraper

    Free online pdf to text scraper executing 100% client-side with zero data tracking.

  • PDF Watermarker

    Free online pdf watermarker executing 100% client-side with zero data tracking.

  • Add PDF Page Numbers

    Free online add pdf page numbers executing 100% client-side with zero data tracking.

  • PDF Page Reorganizer

    Free online pdf page reorganizer executing 100% client-side with zero data tracking.

  • Rotate PDF Layout

    Free online rotate pdf layout executing 100% client-side with zero data tracking.

  • Protect PDF Password

    Free online protect pdf password executing 100% client-side with zero data tracking.

  • Decrypt / Unlock PDF

    Free online decrypt / unlock pdf executing 100% client-side with zero data tracking.

  • EPUB to PDF Converter

    Free online epub to pdf converter executing 100% client-side with zero data tracking.

  • HTML to PDF Sandbox

    Free online html to pdf sandbox executing 100% client-side with zero data tracking.

  • Excel to PDF Converter

    Free online excel to pdf converter executing 100% client-side with zero data tracking.

Developer Utilities — Free Online Utilities

Code minifiers, beautifiers, JSON/SQL validators, regex playgrounds, JWT debuggers, diff checkers, and hash calculators.

  • JSON Validator & Formatter

    Free online json validator & formatter executing 100% client-side with zero data tracking.

  • HTML Minifier

    Free online html minifier executing 100% client-side with zero data tracking.

  • HTML Beautifier

    Free online html beautifier executing 100% client-side with zero data tracking.

  • CSS Minifier

    Free online css minifier executing 100% client-side with zero data tracking.

  • CSS Beautifier

    Free online css beautifier executing 100% client-side with zero data tracking.

  • JavaScript Minifier

    Free online javascript minifier executing 100% client-side with zero data tracking.

  • JavaScript Beautifier

    Free online javascript beautifier executing 100% client-side with zero data tracking.

  • SQL Query Formatter

    Free online sql query formatter executing 100% client-side with zero data tracking.

  • Regex Engine Playground

    Free online regex engine playground executing 100% client-side with zero data tracking.

  • File Diff Checker

    Free online file diff checker executing 100% client-side with zero data tracking.

  • XML to JSON Converter

    Free online xml to json converter executing 100% client-side with zero data tracking.

  • JSON to XML Converter

    Free online json to xml converter executing 100% client-side with zero data tracking.

  • URL Encoder & Decoder

    Free online url encoder & decoder executing 100% client-side with zero data tracking.

  • MD5/SHA-256 Hash Tool

    Free online md5/sha-256 hash tool executing 100% client-side with zero data tracking.

  • JWT Parser & Debugger

    Free online jwt parser & debugger executing 100% client-side with zero data tracking.

  • Markdown Previewer

    Free online markdown previewer executing 100% client-side with zero data tracking.

  • Cron Expression Generator

    Free online cron expression generator executing 100% client-side with zero data tracking.

  • UUID Generator Suite

    Free online uuid generator suite executing 100% client-side with zero data tracking.

  • User Agent Analyzer

    Free online user agent analyzer executing 100% client-side with zero data tracking.

  • HTACCESS Script Builder

    Free online htaccess script builder executing 100% client-side with zero data tracking.

  • XML Sitemap Generator

    Free online xml sitemap generator executing 100% client-side with zero data tracking.

  • Base64 Encoder/Decoder

    Free online base64 encoder/decoder executing 100% client-side with zero data tracking.

Text & Writing — Free Online Utilities

Word and character counters, case converters, line cleaners, duplicate erasers, slug generators, and speech synthesizers.

  • Word & Character Counter

    Free online word & character counter executing 100% client-side with zero data tracking.

  • Case Converter Studio

    Free online case converter studio executing 100% client-side with zero data tracking.

  • Duplicate Line Eraser

    Free online duplicate line eraser executing 100% client-side with zero data tracking.

  • Alphabetical Sorter

    Free online alphabetical sorter executing 100% client-side with zero data tracking.

  • Find and Replace Master

    Free online find and replace master executing 100% client-side with zero data tracking.

  • URL Slug Generator

    Free online url slug generator executing 100% client-side with zero data tracking.

  • Binary to Text Converter

    Free online binary to text converter executing 100% client-side with zero data tracking.

  • Text to Binary Converter

    Free online text to binary converter executing 100% client-side with zero data tracking.

  • Hex to Text Converter

    Free online hex to text converter executing 100% client-side with zero data tracking.

  • Text to Hex Converter

    Free online text to hex converter executing 100% client-side with zero data tracking.

  • Text to Speech Synthesizer

    Free online text to speech synthesizer executing 100% client-side with zero data tracking.

  • Random Line Picker

    Free online random line picker executing 100% client-side with zero data tracking.

  • Upside Down Text

    Free online upside down text executing 100% client-side with zero data tracking.

  • Blank Line Stripper

    Free online blank line stripper executing 100% client-side with zero data tracking.

  • Word Frequency Analyzer

    Free online word frequency analyzer executing 100% client-side with zero data tracking.

  • Gradient Text Formatter

    Free online gradient text formatter executing 100% client-side with zero data tracking.

  • 3D Text Builder

    Free online 3d text builder executing 100% client-side with zero data tracking.

Social & Marketing — Free Online Utilities

Dynamic QR code creators, UTM campaign builders, social card previewers, link obfuscators, and screen recorders.

QR & Barcode Studio — Free Online Utilities

Generate customized vector QR codes for WiFi, vCards, WhatsApp, and scan 1D/2D barcodes with camera or image upload.

  • QR Code Reader

    Free online qr code reader executing 100% client-side with zero data tracking.

  • Barcode Reader

    Free online barcode reader executing 100% client-side with zero data tracking.

  • Barcode Generator Studio

    Free online barcode generator studio executing 100% client-side with zero data tracking.

  • vCard Business Card QR

    Free online vcard business card qr executing 100% client-side with zero data tracking.

  • MeCard Quick Contact QR

    Free online mecard quick contact qr executing 100% client-side with zero data tracking.

  • Email Template QR

    Free online email template qr executing 100% client-side with zero data tracking.

  • Phone Call QR

    Free online phone call qr executing 100% client-side with zero data tracking.

  • Calendar Event QR

    Free online calendar event qr executing 100% client-side with zero data tracking.

  • Social Media Profile QR

    Free online social media profile qr executing 100% client-side with zero data tracking.

  • Crypto Payment QR

    Free online crypto payment qr executing 100% client-side with zero data tracking.

Calculations & Math — Free Online Utilities

Scientific calculations, percentages, amortized loans, compound interest, exact age, currency exchange, and unit conversions.

Miscellaneous — Free Online Utilities

Stopwatches, decision wheels, countdown timers, and specialized offline micro-tools.