Quick answer
Learn how to resize photos and graphics locally for faster pages, smaller attachments, and better upload compatibility.
Use the related browser-only tool after reading the safety notes, then verify the output before sharing.
Choose the right dimensions
Start with the final use. A blog hero image, profile picture, product thumbnail, and email attachment all need different sizes. Avoid uploading full camera-resolution photos when the display area is much smaller.
Keep aspect ratio enabled for most photos. Stretching an image to fit exact dimensions can distort faces, logos, products, and text.
Balance quality and file size
Fewer pixels usually means a smaller file, but compression settings and image format also matter. Check the output visually before publishing, especially for screenshots or images with small text.
For websites, smaller images can improve perceived speed and make pages more mobile-friendly. Still, do not resize so aggressively that the image becomes blurry or unreadable.
Privacy considerations
Resizing with browser APIs often creates a new export and may remove or change metadata, but you should not rely on resizing as a complete privacy tool. Use a metadata viewer if privacy is the reason you are editing the file.
A local resizer avoids uploading your original image to a remote service. That is helpful for everyday privacy and for images that do not need cloud processing.
Verification checklist
Confirm output width and height, open the file at normal display size, check file size, inspect visible content, and verify metadata if the image is sensitive.
Keep the original until the resized copy has been accepted by the form, website, or recipient.
FAQ
What size should I use for a website image?
Use dimensions close to the actual display size. Many content images work well below full camera resolution.
Does resizing reduce quality?
It can. Downscaling usually preserves enough quality for web use, but the result should be checked visually.
Does resizing remove metadata?
It may remove or change some metadata during export, but use a metadata remover/viewer for privacy verification.