Guides
Get the size, format and details right.
Clear answers to the image questions people search for most — each linked to a free tool that does the job in your browser.
Passport & visa
Passport photo size by country
Photo sizes, digital pixel sizes and file limits for common passports, in one table — with links to each official source.
GuideHow to make a 2 × 2 inch US passport photo at home
The US passport photo is a 2 × 2 inch square. Here’s how to take, crop and size one correctly, for print or online.
Guide + size tableVisa photo size guide: pixels and file limits
Visa applications often need exact pixel sizes and a maximum file size. Here are common requirements and how to meet them.
Social media
Social media image sizes cheat sheet
Profile pictures, banners, posts and stories for Instagram, Facebook, X, LinkedIn, YouTube, TikTok and more.
Guide + size tableInstagram image sizes: profile picture, posts and stories
The recommended Instagram sizes for your profile picture (DP), square, portrait and landscape posts, and stories.
Guide + size tableYouTube thumbnail size and how to make one
YouTube thumbnails are 1280 × 720 pixels (16:9). How to size one, keep it readable and stay under the file limit.
Guide + size tableLinkedIn banner size for profiles and company pages
The LinkedIn personal banner is 1584 × 396 pixels. Company covers, post images and profile photos too.
Guide + size tableX (Twitter) header size and post image size
The X header is 1500 × 500 pixels. How to size it, what gets covered, and the best size for images in posts.
Guide + size tableFacebook cover photo size and other Facebook image sizes
Page cover photos, profile pictures, link images, stories and event covers for Facebook.
File size & formats
How to compress an image to 20 KB, 50 KB, 100 KB or 200 KB
Online forms often set a strict file-size limit. Here’s how to hit it without ruining the image.
GuideReduce an image under a file-size limit
Measure real bytes and know when a target is unattainable.
GuideJPG vs PNG vs WebP: which should you use?
Choose a format based on the image, transparency and where it’s going.
GuideConvert PNG to JPG (and what happens to transparency)
Converting PNG to JPG usually makes files much smaller — but transparent areas need a fill colour.
GuideWhat is WebP, and should you use it?
WebP images are often much smaller than JPEG or PNG. Here’s when that helps and when to avoid it.
GuideWhy transparency disappears in JPG
Understand alpha and choose a deliberate fill colour.
Editing & privacy
Make a round profile picture with a transparent background
Crop a photo into a clean circle with smooth edges and a transparent background, ready for any profile.
GuideHow to blur or hide parts of a photo safely
Blur faces, pixelate backgrounds or black out private text — and know which method is safe for sensitive details.
GuideRemove location and other metadata before sharing
Photos can carry GPS coordinates, dates and camera details. Create a clean copy and check it.
GuideHow to watermark your photos
Add your name or logo to photos before sharing them, with the right size, position and opacity.
GuideSplit a photo into an Instagram grid or carousel
Cut a wide or large photo into equal tiles for a seamless carousel or a profile grid.
GuideHow to resize a signature for online forms
Forms often want a signature at an exact pixel size and under a small file limit, such as 20 KB. Here’s how.
GuidePrepare a photo and signature for a form
Keep two files, rules and exports clearly separated.
Size & print
Resize an image without stretching it
Use the aspect ratio, fit inside a box and crop deliberately.
GuideDPI, PPI and pixels: what print size really means
How pixels become centimetres and inches on paper, and why 300 PPI is the usual number.
GuideAspect ratios explained: 1:1, 4:5, 3:2, 16:9 and more
What aspect ratios mean, where each one is used, and how to crop to them.