Practical, tested advice on compressing, converting, resizing and protecting images, written for people who just want the right answer.
Find an image's pixel dimensions and file size on Windows, Mac, iPhone, Android and in a web browser, and learn what the numbers mean before you resize or compress.
Read the guide →20 real-world alt text examples for product photos, logos, icons, screenshots and charts, with what is wrong with the weak version and a better rewrite for each.
Read the guide →Why a PNG can be ten times bigger than the same picture as JPG or WebP, with measured file sizes for six causes and a clear fix for each one.
Read the guide →We measured JPG and WebP quality against file size in Chrome. See what each quality level really costs, what to change first, and how to compress images safely.
Read the guide →A practical comparison of PNG, JPG and WebP with real file-size tests: photos, screenshots, transparency and when each format is the wrong choice.
Read the guide →A practical cheat sheet of working image sizes and aspect ratios for Instagram, Facebook, X, LinkedIn, YouTube, TikTok and Pinterest, with notes on safe zones.
Read the guide →What EXIF data is, what it can reveal, how to check it on Windows, Mac, iPhone and Android, and how to remove it before sharing photos online.
Read the guide →What image size and format really do for page speed, Core Web Vitals and search visibility, and a checklist you can apply to your own pages.
Read the guide →Need a JPG under a certain file size for a form, email or upload? Here is how to reach 100 KB, 200 KB or 500 KB without ruining the picture.
Read the guide →A complete workflow for removing and replacing photo backgrounds: how to shoot, cut out, check the edges, place on a new background and export.
Read the guide →A step-by-step method to resize one photo for several social platforms using crop-to-fill or padding, with worked pixel examples.
Read the guide →A practical guide to serving the right image size to every screen: srcset, sizes, the picture element, width and height, and lazy loading, with copy-paste examples.
Read the guide →DPI explained in plain language: how many pixels you need for 4×6, 8×10, A4 and poster prints, why changing DPI does not add quality, and how to check your photo.
Read the guide →What 1:1, 4:5, 3:2 and 16:9 mean, how to calculate a missing height or width, and how to crop a photo to any ratio without guesswork.
Read the guide →Turn several photos or scans into a single PDF on any device: scanning tips, page sizes, file-size control and the built-in options on Windows, Mac and iPhone.
Read the guide →Photos that look fine on your phone but appear sideways on a website or in an app are caused by an orientation flag. Here is how it works and how to fix it.
Read the guide →Seven practical ways to shrink image files, ranked by how many bytes each one saves, with measurements from real tests.
Read the guide →Why WebP files will not open in some apps, how to convert them to PNG or JPG in your browser, and what happens to quality and transparency.
Read the guide →A plain-English guide to the image formats you meet every day: what each one is, what it is good for, and how to pick one.
Read the guide →Ten common product photography mistakes for online shops, from messy backgrounds to inconsistent sizes, with practical fixes you can do with free tools.
Read the guide →Free background removers differ in privacy, resolution, watermarks and limits. Learn what to check, and how browser-based removal compares to cloud upload.
Read the guide →Every article links to the free tool that does the job, right in your browser.
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