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One simple tool.
Free tools for photos, PDFs, QR codes and everyday math. No signup, no uploads — everything runs locally.
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The tools people use mostCompress PDF
Reduce PDF file size.
Image Compressor
Shrink JPG, PNG or WebP file size.
QR Code Generator
Create a custom QR code with colors and a logo.
Image Resizer
Resize photos by pixels or percent.
Merge PDF
Combine multiple PDFs into one.
HEIC to JPG
Convert iPhone photos to JPG.
Take-Home Pay Calculator
Estimate net pay in the US, UK, France, Spain, Japan, Switzerland, Mexico, Argentina, Australia or Canada.
Password Generator
Create a strong, random password instantly.
JPG to PDF
Turn images into a PDF file.
Age Calculator
Exact age in years, months and days, or the difference between any two dates.
HEIC to JPG
Convert iPhone photos to JPG.
Image Compressor
Shrink JPG, PNG or WebP file size.
Image Resizer
Resize photos by pixels or percent.
JPG to PNG
Convert JPG images to PNG.
PNG to JPG
Convert PNG images to JPG.
Image Cropper
Drag to select the area you want to keep.
Instagram Image Resizer
Fit a photo to Instagram sizes, or split it into a grid/carousel.
Passport Photo Maker
Crop a photo to official passport, visa or ID size, print-ready.
EXIF & Metadata Remover
Strip GPS, camera and date info from a photo.
EXIF Editor
Change a photo's date, GPS location, camera and copyright.
Merge PDF
Combine multiple PDFs into one.
Compress PDF
Reduce PDF file size.
JPG to PDF
Turn images into a PDF file.
PDF to JPG
Export PDF pages as JPG images.
Sign a PDF
Draw or type a signature onto a PDF.
PDF Metadata Editor
Edit or remove a PDF's title, author and properties.
Split PDF
Pull pages out of a PDF file.
Password Generator
Create a strong, random password instantly.
QR Code Generator
Create a custom QR code with colors and a logo.
QR Code Reader
Decode a QR code from an image or your camera.
Barcode Generator & Reader
Create or scan a barcode — upload or use your camera.
Random Number & Name Picker
Pick a random number or name, or spin a wheel.
Coin Flip & Dice Roller
Flip a coin, roll dice, or spin a decision.
Countdown Generator
Live "days until" any date, with a shareable link.
Lottery Number Generator
Random picks for US, FR, JP & ES lotteries.
Favicon Generator
Make a favicon set from an image or a letter.
Unix Timestamp Converter
Epoch to a human date and back.
UUID Generator
Random v4 or time-ordered v7 UUIDs.
Color Converter
Convert HEX, RGB, HSL & extract palettes.
Hash & Checksum
MD5 / SHA of text or a file, and verify.
Cron Expression Explainer
Read a crontab schedule in plain English.
Find & Replace
Search & replace text, with regex.
BMI Calculator
Calculate your BMI with a visual gauge.
Take-Home Pay Calculator
Estimate net pay in the US, UK, France, Spain, Japan, Switzerland, Mexico, Argentina, Australia or Canada.
Discount Calculator
Work out a percentage or sale price.
Salary Calculator
Convert salary to hourly rate.
VAT Calculator
Add or remove VAT from a price.
Fuel Cost Calculator
Estimate the cost of a trip.
Recipe Scaler
Scale ingredients up or down.
Week Number Calendar
A calendar with ISO week numbers built in.
Age Calculator
Exact age in years, months and days, or the difference between any two dates.
Tip Calculator
Calculate the tip and split the bill.
📚 Guides
Plain-English how-tos for images, PDFs, privacy and everyday mathsHEIC vs JPG
Why iPhones use HEIC and when to convert.
Reduce PDF file size
Why PDFs get so big and what shrinks them.
Passport photo sizes
Dimensions by country and common rejections.
Remove EXIF data
What photos reveal and how to strip it.
How to calculate VAT
Add or remove VAT, with worked examples.
Strong passwords
Entropy, length and passphrases explained.
All guides
25 practical how-to articles.