Bring your images.
Choose a file, a batch, or a folder. Your original files remain untouched.
THE PIKOZIP IMAGE TOOLKIT
Resize images online. Keep proportions.
Resize PNG, JPG, WebP and AVIF images free. Set a maximum width, keep proportions and the original format, and download a batch without enlarging small inputs.
On-device processing
Get the dimensions you need
Your image format stays the same. Drag and drop, or choose images below.
Up to 30 images · 10 MB per image
PNGJPEGWebPAVIF
Output settingsOriginal format · 85% lossy · Balanced PNG · 1600 px max widthCustomize
Image resizer
Resize with a purpose
Set a maximum width for photos, banners, or product images. PikoZip scales down when necessary, preserves the aspect ratio, and leaves smaller images at their original dimensions.
Choose a width based on your actual layout, including the display density you want to support. PikoZip does not crop, stretch, or enlarge images. Height is calculated from the original aspect ratio.
Resizing changes pixels, even if you choose lossless PNG output. Save a full-resolution master if you may need a larger version later.
Use Custom width for an exact maximum. An optional target file size may still be unreachable without reducing dimensions further.
A SIMPLE WORKFLOW
Get started with Image resizer.
Find your balance.
Set format, quality, width, and an optional target size. Compare your result.
Take the lighter route.
Download one image or the whole batch in a ZIP, with folder paths preserved.
THE DETAILS THAT MATTER
Know your result.
Are my images uploaded?
No image bytes are uploaded. Your browser fetches the image codecs, then processes your selected files locally.
Will the output always be smaller?
Savings vary. A same-format, same-dimension original is retained when it is smaller. Explicit conversions may increase file size, which the result clearly shows.
Can I keep working from the original?
Yes. PikoZip does not overwrite the source file on your device. Keep your original master and download the output as a separate file.
YOUR NEXT STEP
Keep the workflow moving.
Image format guide
Compare PNG, JPG, WebP and AVIF for photos, transparent graphics and website images. Choose a format using your actual output and compatibility needs.
Explore
Image compression explained
Understand lossy and lossless image compression, resizing and target file sizes. Learn why 100 KB is a goal and when keeping the original is the best result.
ExploreYOUR WORKFLOWHelp center
Search common image optimization questions and troubleshoot your PikoZip results.
ExploreMAKE A LITTLE ROOM
Start optimizingYour next image, a little lighter.
Choose your format. Find your balance. Take it with you.