Compress PNG files.
Make PNG files up to 70% smaller and keep transparency. Ready to go: same dimensions, PNG, quality 80.
- No account needed
- Never stored
- Images & PDFs
Click a file name to rename it. Use Resize / crop to give one image its own size, crop or format.
Tap an image to rename it, resize or crop it, or download it.
Make a PNG smaller and keep transparency
PNG is lossless: every pixel is kept exactly. Great for logos, screenshots and illustrations, but it makes the files big. The biggest saving is in the number of colours. A PNG with at most 256 well-chosen colours (as pngquant does) is often 50 to 70% smaller and looks the same.
What the quality does
- Below 100: the PNG gets a palette of at most 256 colours with dithering. Ideal for logos, icons, charts and screenshots.
- Lossless on (under Optimize): all colours stay, only the compression gets better. A smaller saving, but identical pixel for pixel.
Transparency is kept either way.
A photo as PNG?
A photo as PNG is often 3 to 10 times bigger than as JPG or WEBP. If your PNG has no transparency, convert it to JPG. To keep transparency and get a small file, choose WEBP under Save as.
How it works
Three steps to resize, optimize or convert any number of images.
Upload images
Drop, paste or pick any number of JPG, PNG, WEBP, GIF, TIFF, AVIF, HEIC or SVG files.
Choose the settings
Pick a size, format and quality. Save them as a profile so they are ready next time.
Download
Every image is processed on the server, in memory. Download them one by one or all at once as a ZIP.
Features
Powered by libvips, the same engine large photo sites use. Nothing is stored, nothing goes to third parties. The demos below are live: try them.
Resize
Set a width, a height, a percentage or a box to fit in. Give one side and the other follows the aspect ratio. "Exact" forces a size and crops the rest with smart cropping.
Need the same size for a whole batch? Drop them all at once; the settings apply to every image.
Try it: change the width on the right.
Optimize
Choose a quality from 1 to 100, or set a maximum file size in KB and let the tool find the highest quality that fits. Metadata such as GPS location is stripped by default.
Lossless mode for logos and screenshots, mozjpeg for JPG, and fine control over chroma subsampling, effort and sharpening under Advanced.
Try it: drag the line and move the quality slider.
Convert
Turn anything into JPG, PNG, WEBP or AVIF, or keep the original format. The format you pick stays selected for every image you add, no surprises.
WEBP is typically 25–35% smaller than JPG at the same quality and works everywhere; AVIF is smaller still for modern sites.
Try it: pick a format and watch the file size.
Crop
Open any image from the list and drag a crop box over it, free or locked to a ratio. Social presets for Instagram, Facebook, X, LinkedIn and YouTube set both the crop and the exact output size.
The crop only applies to that one image; everything else keeps following your global settings.
Try it: drag the box or its corners, or pick a preset.
Frequently asked questions
Does my PNG keep its transparency?
Yes. With a colour palette and lossless alike, a transparent background stays transparent.
Why is my PNG so big?
Usually because it is a photo or an image with lots of gradients. PNG keeps every pixel exactly. For photos, JPG and WEBP are much smaller.
Will I see a difference after compressing?
For logos, icons and screenshots usually not. With smooth gradients a 256-colour palette can be slightly visible; turn on Lossless then.
Can I make a PNG smaller in pixels too?
Yes, choose Width or Fit in under Resize, for example. Smaller PNGs are never enlarged.
verklein.nu in Chrome
Resize and compress straight from your browser: open the side panel, or right-click any image on the web. Free, no account.