Free online tools
A growing set of fast, privacy-friendly calculators, converters and developer utilities built by the Fusion Trail Solutions team. Search the collection below — everything runs right in your browser.
Currency Converter
Convert between 160+ world currencies with live exchange rates.
Open toolCalorie & BMI Calculator
Estimate your daily calories, BMR, TDEE and BMI in one place.
Open toolJSON Beautifier
Format, validate and minify JSON with clear error messages.
Open toolInvoice Generator
Create and download professional invoices in seconds.
Open toolUnit Converter
Convert length, weight, temperature, volume, data and more.
Open toolCode to Image
Turn source code into a clean, shareable image.
Open toolBase64 Encoder & Viewer
Encode, decode and preview Base64 text, data URIs and images.
Open toolHTML Previewer
Write HTML, CSS and JavaScript and see it render live.
Open toolJWT Decoder
Instantly decode, verify, and inspect JSON Web Tokens securely in your browser.
Open toolImage / Media Converter
Convert and compress images between PNG, JPG and WebP.
Open toolTime Zone Converter
Convert times across time zones and Unix timestamps.
Open toolEmail Template Generator
Build responsive HTML email templates and copy the code.
Open toolTech Stack Finder
Paste a URL to reveal the technologies a website runs on.
Open toolShopify Theme Detector
Find out which Shopify theme any store is using.
Open toolTimetable Manager
Build a weekly class or work schedule and save it.
Open toolCoupon Finder
Surface on-site promo codes and coupon-search shortcuts for a store.
Open toolURL Previewer & Safety Check
Inspect a suspicious link safely before you click it.
Open toolNeed a custom tool or web app?
We design and build production-grade web apps, internal tools, and SaaS platforms. Tell us what you need.