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Compress Image
Make JPG, PNG and WebP images smaller without visible quality loss.
Add the images you want to make smaller.
Images stay on your device. Dimensions are kept and metadata is removed.
Up to 20 images at a time.
Compress Image online, free and private
Compress Image makes your photos and graphics much lighter so they upload faster, fit email and form limits and speed up websites. JPG and WebP are re-encoded at an optimal quality; PNG is reduced to a smart colour palette, like TinyPNG, and keeps its transparency.
How to use Compress Image
- 1
Add your JPG, PNG or WebP images.
- 2
Pick a compression level.
- 3
Download each image, or all of them in one ZIP.
Why use PDFDog
Private by design
Your file is processed directly in your browser: it is never uploaded to a server. Close the tab and nothing is left behind.
Free, no sign-up
Use it as often as you like without creating an account, and download your file without a watermark.
Same format, same size
Images keep their format and dimensions; only the file size goes down.
Frequently asked questions
How do I reduce the file size of an image?
Add the image to Compress Image, keep the Recommended level and click Compress. The new size and the percentage saved are shown before you download.
Will compression reduce quality?
Recommended keeps images visually identical in most cases. Choose Light for the best quality or Strong for the smallest files.
Can I compress PNG files with transparency?
Yes. PNG images are converted to an optimised palette that keeps transparent areas transparent.
Are my files safe?
Your file is processed directly in your browser: it is never uploaded to a server. PDFDog cannot see, keep or share its content.