Free Online Tools
That Just Work
Compress images, resize photos, generate passwords, and more. Everything runs in your browser — your files never leave your device.
Image Tools
5 toolsImage Compressor
Shrink image file sizes by up to 80% without visible quality loss.
Image Resizer
Resize images to exact dimensions or social media presets.
Image Format Converter
Convert between JPG, PNG, and WebP formats instantly.
HEIC to JPG Converter
Convert iPhone HEIC photos to universally compatible JPG format.
DPI Converter
Change image DPI for print-ready output — 72, 150, 300 DPI and custom.
PDF Tools
1 toolPDF Compressor
Reduce PDF file size by compressing internal streams and stripping metadata.
Text Tools
2 toolsWord Counter
Count words, characters, sentences, and estimate reading time.
Case Converter
Transform text to uppercase, lowercase, title case, and more.
Utility Tools
3 toolsQR Code Generator
Create scannable QR codes for URLs, text, WiFi, and contacts.
Password Generator
Generate strong, random passwords with a visual strength meter.
Color Converter
Convert between HEX, RGB, and HSL color formats instantly.
Calculators
2 toolsAge Calculator
Calculate exact age in years, months, days with next birthday countdown.
BMI Calculator
Calculate Body Mass Index with visual health category indicator.
Coming Soon
Expanding monthlyJSON Formatter
Beautify, minify, and validate JSON data.
Lorem Ipsum Generator
Generate placeholder text for your designs.
Hash Generator
Generate SHA-256 and other hash digests.
Meta Tag Generator
Generate SEO-friendly meta tags for your website.
Why ToolStack?
ToolStack provides free, browser-based tools that process your files locally — nothing gets uploaded to any server. Whether you need to compress an image for your website, generate a strong password, or convert color codes, every tool delivers instant results with zero privacy risk.
New tools are added monthly. Bookmark this page and come back whenever you need a quick, reliable utility.