SnapBox

The Ultimate Collection of Free Web Tools

SnapBox provides 20+ professional utility tools for developers, marketers, and everyday users. From JSON formatting and image optimization to marketing UTM builders, EVERYTHING runs instantly in your browser. No registration, no installation, 100% free.

Lightning Fast

Client-side processing means zero waiting time.

100% Private

We don't store your data. It stays on your device.

Mobile Ready

Optimized for all screens and devices.

Health & Fitness

1 tool

BMI Calculator

Calculate your Body Mass Index and get health recommendations.

Calculate BMI

Social Media

4 tools

YouTube Thumbnail

Download HD thumbnails from any YouTube video instantly.

Get Thumbnails

YouTube Chapter Builder

Generate video chapters easily while watching. Press Space for timestamps.

Build Chapters

Instagram Line Break

Fix line break issues in Instagram captions and bio.

Fix Breaks

AliExpress Link

Convert short URLs and extract product IDs from AliExpress.

Convert Links

Developer Tools

7 tools

Image & PDF to Text

Extract editable text from images and PDF documents instantly.

Extract Text

Image Optimizer

Compress and resize images in your browser without quality loss.

Optimize Image

JSON Formatter

Format, validate, and beautify JSON data instantly.

Format JSON

Markdown Preview

Write and preview Markdown in real-time with live rendering.

Preview MD

Regex Tester

Test regular expressions with real-time match details.

Test Regex

Favicon Grabber

Download favicon icons from any website in multiple sizes.

Grab Favicon

UTM Builder

Create tracking URLs for Google Analytics campaigns.

Build UTM

Everyday Tools

7 tools

Interest Calculator

Calculate compound interest and savings growth easily.

Calculate Interest

QR Code Generator

Create QR codes for text, URLs, WiFi, and contacts.

Generate QR

Unit Converter

Convert length, weight, temperature, and more.

Convert Units

Age Calculator

Calculate exact age in years, months, days, and minutes.

Calculate Age

Text Tools

Count characters, convert case, and format text.

Process Text

Color Picker

Pick colors and get HEX, RGB, HSL codes instantly.

Pick Colors

Special Characters

Click to copy special symbols and characters. 400+!

Browse Symbols

From Our Blog

How-to Guides

YouTube Thumbnail Guide

Learn how to download and use YouTube thumbnails for content research, blog posts, and presentations.

Read Guide

QR Code Generator Guide

Master QR code best practices — from size and contrast requirements to advanced tracking strategies.

Read Guide

UTM Builder Guide

Build professional UTM tracking URLs and measure your marketing campaigns with precision in GA4.

Read Guide

All Guides

Browse all 13 in-depth guides covering every SnapBox tool with expert tips and real-world examples.

Browse All →