Free tools
Little utilities for a smoother day. Free, browser-based, no signup and no usage limits. Every one works right here on the page.
Excel Formula and Shortcut Finder
496 Excel functions with examples, 343 Windows and Mac shortcuts, 114 tricks and 55 VBA snippets, all in one search.
Open the toolInvoice Generator
Make invoices, receipts, quotes and proforma invoices with tax, discounts and your logo, then download a real PDF.
Open the toolBusiness Card Generator
Design a business card with your photo, logo, signature and a QR code, then download a print-ready PDF.
Open the toolFree Password Hasher
Hash and verify with Argon2id, bcrypt, scrypt, PBKDF2 and 14 digests. Identify any hash with its hashcat mode.
Open the toolFree Password and Passphrase Generator
Strong random passwords and EFF wordlist passphrases, with entropy in bits and crack times for four attack speeds.
Open the toolFree QR Code Generator
18 QR code types with your logo, colours and frames, checked to scan before you download. PNG, SVG, PDF and EPS, or 1,000 at once.
Open the toolWebsite Technology Checker
Paste any URL and see what the site is built with: CMS, framework, theme, analytics, hosting, security headers and DNS.
Open the toolWorld Clock and Time Zone Converter
Philippine Time and every city you work with, live to the second. Convert any time and find the hours that suit everyone.
Open the toolNeed something custom?
If one of these is close to what you need but not quite right, I build custom tools too.
Tell me about itfree tools, with more added whenever a project needs one.
Why these exist
Every one of these is a small, single-job utility: generate a password, hash one, make a QR code, an invoice or a business card, look up an Excel formula, see what a website is built with, or check the time anywhere in the world.
7 of the 8 run entirely in your browser, so nothing you type is sent to a server. The tech stack detector is the exception, because it has to fetch the site you ask about. No accounts, no daily limits, no watermarks.
I build software, and I measure whether it works.
The same questions I research are the ones I ask on client builds: is it reliable, is it fast, is it easy to use, and is it secure. Those four drove satisfaction in my ICT portal study, and they shape how I scope and test every project.