All-in-One Developer & Data Toolbox
A comprehensive collection of free, privacy-first tools for developers, designers, writers, and data analysts. Everything runs in your browser - your data never leaves your device.
Tools by Category
Image & Graphics Tools
Popular tools for image manipulation, conversion, and optimization.
Create favicons from images, all client-side.
Convert images between popular formats like JPG, PNG, WebP, GIF, and ICO with quality control and batch processing.
Resize images online with precision. Choose from popular presets, maintain aspect ratio, and download in multiple formats.
Compress images to reduce file size while maintaining quality. Support for JPG, PNG, and WebP formats with batch processing.
Crop images with precision using interactive selection, aspect ratio presets, and social media dimensions.
Edit photos with professional-grade color adjustments including brightness, contrast, saturation, vibrance, and apply beautiful filters.
Add custom text or logo watermarks to your images with live preview. Protect your photos and boost your brand with professional watermarking.
Rotate and flip images with precision. Correct orientation, create mirror effects, and prepare photos for different layouts with live preview.
Text & Content Tools
Essential tools for writers, students, and content creators.
Convert text between uppercase, lowercase, sentence case, title case, and developer cases.
Count words, characters, sentences, and more.
Compare two texts or files with side-by-side diff view, word-level highlighting, and real-time comparison.
Generate placeholder text in various themes.
Sort lines alphabetically, reverse order, remove duplicates, and clean text data.
Find and replace text with advanced options like case-sensitive search, whole word matching, and RegEx support.
Write and preview Markdown with real-time rendering, GitHub Flavored Markdown support, and export options.
Calculate reading time, word count, and readability scores with customizable WPM settings.
Data & Developer Tools
Professional tools for developers and data analysts.
Create cron expressions with a simple UI.
Design gradients visually and get CSS code.
Pick colors from images, screen, or use advanced color tools.
Encode or decode URLs instantly.
Format and validate JSON data.
Convert JSON to multiple formats: CSV, YAML, XML, and more.
Encode text and files to Base64 or decode Base64 back to original format.
Generate MD5, SHA-1, SHA-256, SHA-512 hashes of text input using Web Crypto API.
Generate UUIDs/GUIDs in multiple versions (v1, v4, v5) with various formatting options.
Decode and verify JSON Web Tokens with real-time validation and signature verification.
Convert between Unix timestamps and human-readable dates with live current time display.
Create custom QR codes for URLs, WiFi networks, contact information, email, SMS, and location coordinates with logo support.
Generate cryptographically secure random numbers with advanced options. Perfect for contests, games, decisions, and statistical sampling.
View, edit, sort, filter, and manipulate CSV files directly in your browser. Import CSV files, edit data in a spreadsheet-like interface, and export results instantly.
Convert JSON arrays or CSV data into beautifully formatted HTML tables with styling options. Perfect for documentation, reports, and web content creation.
Privacy & Security Tools
Secure tools for password generation, encryption, and data protection.
Generate secure passwords and passphrases with customizable length, character types, and strength validation. Perfect for creating strong, unique passwords for all your accounts.
Generate secure, memorable passphrases using the Diceware method with cryptographically secure random word selection.
Encrypt and decrypt text using AES-256-GCM encryption with a password. All processing happens in your browser for maximum security.
Create and store encrypted notes locally in your browser. Your notes are encrypted with AES-256 and stored securely in localStorage.
View and manage cookies, localStorage, and sessionStorage for the current website. Perfect for developers and privacy-conscious users.
Audio & Video Tools
Advanced tools for media processing and conversion.
Trim, cut, and crop your audio files online for free. Create ringtones, edit podcasts, and more with our powerful browser-based audio editor.
Convert videos to animated GIFs with precise timeline control and quality settings.
Extract high-quality thumbnails from any video frame with precise timeline control and frame-by-frame navigation.
Create stunning real-time audio visualizations and music videos. Upload audio files or use your microphone to generate beautiful visual effects with customizable colors, effects, and video export.
Productivity & Utility Tools
Everyday tools to boost your productivity.
Compress JavaScript, CSS, and HTML to reduce file size and improve website performance.
Optimize SVG files for web use, reduce file size, and edit SVG elements visually with advanced tools.
Convert colors between HEX, RGB, HSL, and CMYK formats with color harmonies and accessibility checking.
Convert between units of length, weight, temperature, volume, speed, area, data storage, and time instantly with live conversion and precision control.
Convert timezones instantly with real-time updates, compare multiple cities, find meeting times, and calculate time differences worldwide.
Calculate mortgage payments with PITI, PMI, extra payments, and full amortization schedules. Compare loan terms and plan your home purchase with confidence.
Professional stopwatch with lap functionality and countdown timer with multiple alarm sounds. Perfect for workouts, studying, cooking, and presentations.
Create ZIP archives and extract files from ZIP archives entirely in your browser. Compress multiple files and folders or extract ZIP contents with full privacy.
PDF Tools
Comprehensive PDF manipulation and conversion tools.
Convert PDF pages to high-quality JPG or PNG images with smart page selection, DPI control, and batch download.
Combine multiple PDF files into a single document securely in your browser. No uploads, no watermarks, unlimited usage.
Split PDF files for free with three powerful modes: extract specific pages, separate every page, or split by fixed ranges. Works entirely in your browser.
Add page numbers to your PDF with full customization. Choose position, format, style, and even Bates numbering for professional documents.
Why Choose Our Tools?
Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
No server round-trips. Instant results with client-side processing.
Free Forever
No registration, no ads, no tracking. Just free tools for everyone.