Compress image
Shrink JPG, PNG and WebP images for email and the web. One image or a whole batch, with a live before/after preview and a ZIP of the lot.
Open Compress image →What is the image compressor?
A private image compressor that shrinks JPG, PNG and WebP photos for email and the web. Drop in one image or a whole batch, set the format and quality once, and every file is compressed against a live before/after preview with a running total of what you saved. Download a single picture or the whole batch as a ZIP — all in your browser, so nothing is uploaded and it keeps working offline.
How to use Compress image
- Add your images — Drop files onto the dropzone or click to choose them — JPG, PNG, WebP and BMP are supported, as many at once as you like.
- Pick a format — Output as JPG, WebP, PNG, or keep each image's original format to suit where the pictures will be used.
- Set the quality — Drag the quality slider (for JPG and WebP) and watch every file size update in the list below the preview.
- Optionally scale down — Shrink every image to 50% or 25% of its dimensions — a smaller pixel count cuts the file size far further than quality alone.
- Compare and download — Click any row to preview it, toggle between Original and Compressed to check the result, then download one image or the whole batch as a ZIP.
Frequently asked questions
Are my images uploaded to compress them?
No. Compression happens entirely in your browser, so your photos never leave your device and the tool keeps working offline.
Can I compress several images at once?
Yes, up to 100 at a time. One format, quality and scale setting applies to the whole batch, every row shows its own before and after size, and you can save the lot as a single ZIP.
Which formats can I output?
You can save as JPG, WebP or PNG, or keep the original format of each image. JPG and WebP use the quality slider; PNG is lossless.
What quality should I choose?
Around 80% is a good default for sharing — small files that still look clean. Lower it further for email or thumbnails, raise it for detailed photos.
Can I make the files even smaller?
Yes. Scaling every image down to 50% or 25% reduces the pixel count, which cuts the file size on top of compression.
How can I see how much I saved?
The three cards above the list show the total original size, the total compressed size and the overall percentage saved, and each row shows its own saving. Flip between Original and Compressed to compare quality.
Tips
- WebP usually beats JPG at the same quality — try it if your target supports the format.
- Use the before/after toggle to find the lowest quality that still looks good, then let the whole batch follow it.
- Combine scaling down with compression for the smallest possible email attachments.
- Keep PNG only when you need transparency or pixel-perfect graphics — otherwise JPG or WebP is smaller.