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Welcome to VnnTools!

Simple and free online tools for your daily tasks. Start using now, no registration required!

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72+

Free Tools

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Blog Posts

Image Tools

Transform, edit, and convert images with these powerful tools

Base64 to Image Converter

Convert Base64 encoded strings back to images with a simple tool

Batch Resize Images

Resize multiple images at once. Upload multiple images and resize them all with the same settings.

Blur Image

Apply blur effect to images online for free. Add Gaussian blur to create artistic effects or privacy protection with professional quality.

Image Brightness Adjustment Tool

Professional image brightness adjustment tool with real-time preview, batch processing, and precise brightness control

Change Image Contrast

Adjust image contrast online for free. Increase or decrease contrast to enhance your photos with professional quality results.

Crop Image

Easily crop and resize images with precision

Image Darkening Tool

Professional image darkening tool with real-time preview, batch processing, and precise darkness control

Extract Colors From Image

Analyze and extract accurate colors from images with advanced AI technology. Supports multiple color formats (HEX, RGB, HSL), smart sorting, and easy data export. Completely free and does not store user data.

Grayscale Image Converter

Convert color images to grayscale online for free. Transform your photos to black and white with professional quality results.

Image Color Picker

Pick colors from any image with your mouse cursor

Image Compression Tool

Smart WebP, PNG, and JPEG compression tool, significantly reducing image file sizes without compromising quality

Image to Base64 Converter

Convert your images to Base64 string format with a simple tool

Image Lightening Tool

Professional image lightening tool with real-time preview, batch processing, and precise lightness control

Photo Censor

Censor and blur sensitive areas in photos online for free. Protect privacy by adding blur, pixelation, or black bars to hide personal information.

Resize Image

Easily resize your images to any dimension with precision

Rotate Image

Easily rotate and flip images with precision

Round Corners Image

Add rounded corners to images online for free. Create modern, stylish images with customizable corner radius.

Image Watermark Tool

Add text or image watermarks to your photos easily

Image Converter

Convert images between different formats

Developer Tools

Helpful utilities for web developers and programmers

Code to Image Converter

Create beautiful images from your code with customizable themes and modern styling options.

CSS Background Pattern Generator - Create Beautiful Patterns

Generate beautiful CSS background patterns with live preview. Create dots, stripes, grids, waves, and more with customizable colors and sizes.

CSS Box Shadow Generator

Create beautiful CSS box shadows with real-time preview. Generate custom shadow effects with multiple layers, colors, and directions for stunning visual depth.

CSS Clip-Path Generator

Create and customize CSS clip-path shapes with a visual editor. Generate modern clipping paths for unique design effects.

CSS Glassmorphism Generator

Create stunning glassmorphism effects with real-time preview. Generate modern frosted glass UI components with customizable blur, opacity, and styling.

CSS Gradient Generator

Create beautiful CSS gradients with real-time preview. Generate modern gradient effects with multiple colors and directions for stunning visual effects.

CSS Loader Generator

Create beautiful CSS loading animations with customizable styles, colors, and sizes for your web projects.

Extract Text from HTML

Extract clean text content from HTML code instantly. Remove all HTML tags and get readable plain text.

HTML to Markdown Converter

Convert HTML to clean, readable Markdown with this powerful converter. Perfect for content migration and documentation.

JavaScript Formatter

Format and beautify your JavaScript code with customizable options to make it more readable and consistent.

JavaScript Minifier

Minify your JavaScript code by removing unnecessary characters, whitespace, and comments to reduce file size and improve performance.

Markdown to HTML Converter

Convert your Markdown content into clean HTML with live preview. Fast and efficient Markdown to HTML conversion.

HTML Minifier

Compress your HTML code by removing unnecessary characters to reduce file size and improve performance.

HTML Prettifier

Make your HTML code beautifully formatted and readable with customizable indentation. Clean up minified HTML instantly.

Latest Blog Posts

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[Advanced JS] What is the Event Loop? Discover How JavaScript Works

The Event Loop is the heart of JavaScript, but not everyone understands it well. This article visually explains how the Event Loop works and related concepts.

[Advanced JS] Intersection Observer API: The Complete Guide to Effective Usage

A comprehensive guide to the Intersection Observer API, from theory to practice. Understand how this API works and apply it to real-world projects to improve user experience.

[Advanced JS] Call, Apply, Bind in JavaScript: Clear Examples and Practical Applications

Struggling with the 'this' keyword in JavaScript? Learn Call, Apply, Bind through intuitive examples and see how they help you control function execution context effectively.

[Advanced JS] Data Structures & Algorithms: Practical Applications with JavaScript

Apply Data Structures and Algorithms to optimize web app performance. Level up your clean and efficient coding skills with JavaScript in this in-depth article.

[Next.js Tutorial] A Simple and Effective Guide to Deploying Your Next.js App

Struggling to deploy your Next.js app? Don’t worry! This step-by-step guide will help you deploy successfully to a server in just a few minutes, even if you’re a beginner.

[Advanced JS] Object-Oriented Programming (OOP) in JavaScript: Concepts & Examples

What is Object-Oriented Programming (OOP)? This article explains OOP concepts in JavaScript and provides practical examples to help you understand easily.