Resize images: free and without quality loss
Photo too large for email or your website? Resize your image quickly and securely, right in your browser.
Why resize images?
Modern cameras and smartphones take photos of 5 to 30 megabytes. That is great for a large print, but far too big for most uses:
- • Email: Most mail servers block attachments larger than 10-25 MB
- • Websites: Large images load slowly and lower your Google score
- • Social media: Platforms compress your photos automatically, often with poor results
- • Storage: Smaller files save space on your phone or in the cloud
The problem with online tools
Privacy risk
Most online resize tools upload your photo to their server. Personal photos, ID documents or company images then end up on a server you have no control over.
Limits and ads
Free tools often limit the number of edits per day, show intrusive ads, or add a watermark.
Needlessly slow
Uploading your photo, waiting for processing, then downloading it again. While your own browser can do it in a fraction of a second.
Our solution: everything stays local
Our image resize tool processes your photo entirely in your browser. Nothing is uploaded. Your image never leaves your computer.
Completely private
No upload, no server, no cookies. Your photo stays on your own device.
Full control
Adjust width, height, quality and output format. Keep the aspect ratio or set it freely.
Multiple formats
Choose between JPG, PNG or WebP. Convert between formats with ease.
Instant result
See right away how much smaller your file has become. Download with one click.
JPG vs PNG vs WebP: which format should you choose?
JPG — best for photos
JPG uses lossy compression: the file gets smaller by leaving out subtle details. At 80% quality the difference is barely visible, but the file is often 50-70% smaller. Ideal for photos, screenshots and images with lots of colours.
PNG — best for sharp images
PNG is lossless: no quality loss. The file is larger than a JPG, though. Use PNG for logos, text, diagrams and images with transparency. The quality slider has no effect with PNG.
WebP — the best of both
WebP is Google's newest format. It combines good compression with high quality and also supports transparency. WebP produces files that are 25-35% smaller than JPG at the same quality. Ideal for websites.
Tips for resizing
- 1 Start with the dimensions. Resizing a 4000x3000 px photo to 1200x900 px already saves a huge amount of space.
- 2 80% quality is the sweet spot. For most uses you will not see a difference from 100%, but the file is much smaller.
- 3 Choose the right format. Photos in JPG or WebP, logos and text in PNG.
- 4 Lock the aspect ratio. Prevent your image from being stretched or squashed.
Common uses
Sending photos by email
An 8 MB holiday photo does not always fit as an email attachment. Resize the image to 1200 px wide at 80% quality and you have a file of less than a megabyte, with no visible difference.
Images for your website
Google penalises slow websites in its search results. Use the WebP format and resize images to the size they are actually displayed at. An image shown 400 px wide does not need to be a 4000 px wide file.
Profile pictures and avatars
Most platforms want an image of 200x200 to 500x500 px. Resize your portrait photo to the right size before uploading, so the platform does not do it for you (with worse results).
Tip: convert your image as well?
Besides resizing, do you also want to change the format — for example from PNG to JPG, or to WebP for faster loading? Then use our image converter. Also completely free and without uploading to a server.
Want to send the resized image?
Have you resized your image and want to share the result? Upload the file via our upload page and share the download link. Free up to 3 GB, with end-to-end encryption and automatic deletion.