How to use the image resizer & compressor
Choose a maximum width and output format to prepare a smaller still image. Aspect ratio is preserved and smaller sources are not enlarged. Quality affects JPEG and WebP; PNG ignores the quality setting. JPEG fills transparency with white. Canvas output removes original metadata and flattens animation. Inputs are limited to twenty MiB and forty megapixels; compare actual output size because compression can increase file size.
Work directly in the input area at the top of this page and choose the settings that match your task. Run the action to see the output separately from your original input. Start with a small example whose result you can check, then process the value you actually need. Changing an input clears an older result so it cannot be mistaken for a fresh conversion.
Processing runs in your browser. This tool does not send your input to a conversion server, create an account history, or save the input in browser storage. A copied result remains subject to your device clipboard settings, while a downloaded file stays on your device until you remove it. Anyone with access to your screen or browser can still see the information you enter.
Use Copy for text output or Download for a local file. If clipboard access is unavailable, select the output and copy it manually. Clear removes the current result and any main text or file input; settings remain available for another run. Keep original files and important values until you have checked that the output works in the application where you intend to use it.
Frequently asked questions
Should I resize or compress to make a photo smaller?
Resize first. A 4000-pixel-wide photo shown 800 pixels wide is carrying twenty times the data it needs; dropping the dimensions helps far more than squeezing quality, and looks better than a heavily compressed large image.
Which format should I choose?
WebP for photographs on the web — typically a quarter to a third smaller than JPEG at the same quality. JPEG where something older has to read the file, and PNG only for graphics with sharp edges or transparency.
Does saving again lose quality?
JPEG and WebP are lossy, so each save discards a little more detail. Always re-export from the original rather than repeatedly re-saving an export, and keep the master file.
Are my photos uploaded to a server?
No. Resizing and compression run in your browser, so the image never leaves your device.