Why file size and quality trade off
Lossy formats like JPG and WebP store an approximation of the image — lower settings approximate more aggressively, removing detail you mostly cannot see before they remove detail you can.
Visually lossless compression
Compress an image without losing quality
There is a sweet spot where a photo gets meaningfully smaller without looking any different on screen. This page shows where that point usually sits and how to find it for your own image.
Visually lossless compression
Shrink the file, not the quality
How to find the no-loss point
Start around quality 85-90, compare the preview to the original at 100% zoom, and step down a little at a time until you can just start to notice a difference — then step back up one notch.
What is the difference between compressing a JPG and a PNG?
JPG compression is lossy and controlled by a quality slider, trading some detail for much smaller files. PNG compression is lossless — size shrinks only by re-organizing data, with every pixel staying exactly the same.
FAQ
Compress without losing quality FAQ
What is the difference between compressing a JPG and a PNG?
JPG compression is lossy: a quality slider trades fine detail for smaller files. PNG compression is lossless, so the pixels never change — it just stores them more efficiently, with smaller size gains.
Does compressing an image change its dimensions?
No. Compression changes how pixels are encoded, not how many there are. Width and height stay the same; use Resize separately if you also need smaller dimensions.
Will compressing my image remove the EXIF or location data?
Re-encoding can strip some metadata as a side effect, but it is not guaranteed. If removing EXIF and GPS data matters, run the image through Strip Metadata as well.
Can I compress multiple images at once?
Yes — apply the same quality setting to a batch of images and export them together, which helps keep a consistent look across a set of photos.