The universal web toolbox.
77 curated micro-utilities built for developers, designers, and thinkers. Fast, privacy-centric, and distraction-free.
Most Popular Tools
Top 8 Power UtilitiesJSON Formatter
Format, validate, repair, and minify JSON trees with automatic linting.
QR Code Generator
Generate customizable vector and PNG QR codes from text, URLs, or Wi-Fi configs.
Image Compressor
Compress JPEG, WebP, and PNG file sizes up to 80% with zero quality loss.
UUID Generator
Bulk generate cryptographically secure UUID v4, v1, and NIL identifiers.
Invoice Generator
Create professional PDF invoices with live calculations, tax rates, and currency.
Merge PDF
Combine multiple PDF documents into a single organized file in seconds.
Base64 Converter
Encode and decode standard strings, Unicode payload sequences, and raw data.
Regex Tester
Interactive regular expression tester with capture groups and syntax explanation.
Curated Workspaces
Handpicked toolchains designed for specific workflows
Full-Stack Dev Kit
JSON Formatter, JWT Decoder, Regex Tester, Base64 Encoder, and UUIDs.
PDF & Paperwork Studio
Split, Compress, Rotate and Combine PDF documents completely in-browser.
Finance & Ledger Suite
Invoice Generator, Compound Interest, GST Splitter, and Currency Rates.
Complete Tool Library
Showing verified client-side calculators, converters & generators
Age & Birthday Calculator
Calculate exact age, next birthday countdown, and cultural zodiac.
Area & Land Converter
Convert between area and land units.
Average & Statistics Calculator
Calculate mean, median, mode, standard deviation, and stats.
Base64 Encoder
Encode or decode Base64 text.
Bill Splitter
Split a bill among a group with tax and tip.
BMI & Healthy Weight Calculator
Calculate BMI, health classification, and ideal weight.
Case Converter
Convert text between different letter cases.
Color Extractor
Extract dominant color palettes and harmonies from images.
Color Picker
Pick colors with eyedropper and get HEX, RGB, HSL, HSV, CMYK.
Compound Interest Calculator
Calculate compound growth, periodic deposits, and future value in any currency.
Compress PDF
Reduce PDF file size in browser.
Cron Expression Generator
Build and describe cron expressions.
CSV to JSON
Convert CSV data to JSON with shape mapping & table preview.
Currency Converter
Convert 160+ world currencies with live rates.
Digital Storage Converter
Convert between digital storage units with transfer estimator.
Discount Calculator
Calculate sale prices, stacked coupons, and dollar savings in any currency.
Client-Side Architecture
All computation runs inside your local browser sandbox. No server endpoints receive your confidential data.
Zero Latency & Ads
No tracking beacons, no popups, and no paywalls. Built for maximum developer velocity and crisp rendering.
Works Offline (PWA)
Toolium caches all core scripts locally, so you can convert PDFs, decode tokens, and edit text on airplanes.