Image Compressor — Compress JPG, PNG & WebP Online
Make your pictures lighter without making them look worse. Drop in one or more JPG, PNG or WebP files, choose a quality level and compare the original with the compressed version before you download. Everything happens in your browser, so your photos are never uploaded.
How to use the Image Compressor
- Drop your JPG, PNG or WebP images onto the upload box, or tap it to choose files.
- Move the quality slider. Lower quality means a smaller file; around 75–80 is a great starting point.
- Compare the before and after previews and check the size saving shown for each image.
- Download images one by one, or grab them all together as a single ZIP file.
Why compress images?
Large images are the number one reason web pages load slowly. A single unoptimised phone photo can weigh 5 MB or more, which is slow to email, slow to upload and expensive on mobile data. Compressing images keeps pages fast, helps your site rank better in search and makes attachments easier to send.
This tool re-encodes your picture with a smarter balance between detail and file size. For photographs the result is usually 50–80% smaller with differences that are hard to see at normal viewing size.
Which format should I choose?
JPG is best for photographs. WebP usually gives even smaller files at the same visual quality and is supported by every modern browser. PNG is ideal for logos, screenshots and graphics that need sharp edges or transparency — for those, the tool reduces the number of colours to save space, and you can optionally switch PNG files to WebP for the smallest result.
Ideas & examples
- Blog and website photos: A 4.2 MB camera photo compressed at quality 75 typically lands around 600–900 KB — fast enough for any page.
- Email attachments: Squeeze a folder of holiday pictures under an email size limit by compressing them all at once and downloading the ZIP.
- Online shop product images: Smaller product photos load quicker on mobile, which keeps shoppers on the page and improves conversion.
Frequently asked questions
Is the Image Compressor really free?
Yes. It is completely free, with no watermark, no sign-up and no daily limit.
Are my images uploaded to a server?
No. Compression runs inside your browser using your own device. Your pictures never leave your computer or phone.
How much can I reduce the file size?
It depends on the picture. Photos often shrink by 50–80%. Images that are already well optimised may shrink very little — in that case the tool keeps your original so you never end up with a bigger file.
Will compression reduce image quality?
JPG and WebP compression is lossy, so tiny details are traded for size. At quality 70–85 the difference is rarely visible. You can compare the before and after previews and pick the level you like.
What is the maximum file size?
Each image can be up to 25 MB and you can add up to 30 images at a time. Very large files may take a few seconds on older phones.
More free tools you might need
- Image Resizer — Resize photos to exact dimensions or social media presets, keeping the aspect ratio.
- Image Converter — Convert JPG, PNG and WebP files in bulk, with previews and one-click downloads.
- PDF Merger — Combine several PDFs into one document. Drag to reorder, then download.
- QR Code Generator — Make QR codes for links, text, email and Wi-Fi in your colours. Download PNG or SVG.