Bring image weight down in one of two ways. You can fix a quality and see what comes out, or say how much the file is allowed to weigh and let the page get there on its own.
The second mode runs a binary search over the quality until it finds the highest one that fits the budget, and if even the lowest sensible quality is too big, it shrinks the pixel dimensions in 20 % steps until it fits.
How to use it
- Drop in the images you want to slim down.
- Choose whether to fix the quality or a maximum size in kilobytes.
- Check the percentage-saved column and download whatever convinces you.
Frequently asked questions
- What quality is good enough?
- Between 75 and 85 in WebP is where most people cannot tell the result from the original. Below 60 you start to see artefacts in gradients and around text.
- Why does it not use all of the size limit I asked for?
- Because the search never goes above quality 95. Past that point the file grows fast with no visible gain, so if 95 already fits, it stops there.
- Can I compress without changing format?
- Yes, choose “Keep the original”. It works well with JPEG and WebP; with PNG the gain is small, because it is a lossless format and re-encoding it frees little.
- What does the maximum width do?
- It shrinks the image before compressing. It is usually the most effective lever of all: serving a 4000 px photo on a page that shows it at 800 px wastes 96 % of the pixels.
Related tools
Convert imagesPNG, JPG, WebP and AVIF in any direction, in batches.
Resize imagesWidth and height with fit control, and no upscaling by default.
Crop imagesDraw the crop on the picture and apply it to the whole batch.
Rotate and flipQuarter turns, and horizontal or vertical flips.
Strip metadataRemoves EXIF, GPS and profiles by re-encoding to the same format.