Compress Images
Shrink JPG and PNG images for faster websites and smaller attachments.
- Smart lossy and lossless modes
- Batch compress an entire folder
- Dimensions and metadata controls
Drag & drop your file here
orFiles are encrypted in transit and deleted automatically after processing.
About the Compress Images tool
Compress Images removes invisible data and re-encodes pictures with a smarter algorithm, so pages load faster and Core Web Vitals improve without a visible quality drop.
Reduce the file size of JPG, PNG, or other images without needing photo editing software, so they load faster on websites, attach more easily to emails, and take up less storage space.
How to compress images
- 1Upload the photos or graphics you want to shrink.
- 2Pick a compression level or target file size that suits your use case.
- 3Download the compressed images individually or as a zip file.
Lossy versus lossless compression
Lossy compression, commonly used for JPG photos, reduces file size by discarding some visual detail that is barely noticeable to the eye, making it ideal for web images, social media, or email attachments where smaller size matters more than pixel-perfect accuracy. Lossless compression, more common for PNG graphics with sharp edges or transparency such as logos and screenshots, shrinks the file by optimizing how data is stored without removing any image information.
For most everyday photos, a moderate compression setting cuts file size significantly while keeping the image looking essentially the same at normal viewing sizes. Very high compression can introduce blotchy artifacts, especially around fine detail and text within an image. Uploads are sent over an encrypted connection and removed from the server after processing, and no account is needed to use the tool.
Why use PDF Leader for JPG to PNG
Fast
Most files are processed in a few seconds, even large ones.
Private
Encrypted transfer and automatic deletion after processing.
Any device
Runs in the browser on desktop, tablet and phone.
No limits
No watermarks, no page caps and no forced sign up.
Frequently asked questions
What is the difference between lossy and lossless compression?+
Lossy compression removes some image data to achieve smaller files and is best for photos, while lossless compression shrinks files without discarding any data and suits graphics like logos or screenshots.
Which image formats can I compress?+
The tool supports common formats such as JPG, PNG, and WebP, applying the compression method best suited to each format's characteristics.
Will compressing a PNG lose transparency?+
No, lossless compression of PNG files preserves transparency and exact pixel values while still reducing file size.
How much can I shrink a photo without visible quality loss?+
Most photos can be compressed by 50-70% at moderate settings with little to no visible difference at normal viewing size, though this varies with the image's original detail.
Can I compress many images at once?+
Yes, you can upload a batch of images together and download all the compressed results as a single zip file.
Will compressed images still look good on a website?+
Yes, moderate compression is specifically well suited to web use since it keeps images visually sharp while significantly reducing page load times.