All tools
Browse Tools by Category
Every tool on the site, grouped by the kind of job it does. 82 in total; each one runs in your browser.
PDF Tools
Merge, split, rotate, encrypt and convert PDF files without uploading them to a server.
Image Tools
Resize, crop, compress and convert pictures, read their EXIF data, and generate QR codes and barcodes.
Calculators
Loan repayments, investment growth, tax, margins and break-even — with the formula and assumptions shown.
Health Tools
BMI, BMR, body fat, macros and hydration estimates, each page naming the method it uses.
Converters
Weight, length, temperature, number bases, fractions and colour codes, converted with exact factors.
Text Tools
Count words and characters, change case, clean up lists, generate placeholder text and encode URLs.
Developer Tools
Format JSON and SQL, diff structures, decode JWTs, hash strings and generate UUIDs — all client-side.