Compress an image online to a smaller file size while keeping it looking sharp. This free image compressor reduces JPG, PNG, and WebP files so they load faster, use less storage, and slip under email and upload limits — and your picture is deleted automatically an hour after it is uploaded.
What image compression actually does
Image compression shrinks a file by storing the same picture with less data. There are two kinds. Lossless compression (as in PNG) rebuilds the image perfectly but saves less. Lossy compression (as in JPG and WebP) drops detail the eye barely notices to save far more — at 80% quality a photo is usually indistinguishable from the original at a fraction of the size.
This tool lets you pick the quality level, or target a size, and always shows you the before/after and the real percentage saved before you download. You stay in control of the trade-off rather than guessing.
How to compress an image without losing quality
The trick is matching the format and quality to the picture. For photographs, JPG or WebP at 70–85% quality keeps the result looking identical while cutting the file dramatically. For screenshots, logos, and line art, keep it lossless (PNG or lossless WebP) so text and edges stay crisp.
Because you can see the preview, you can nudge the quality down until you just start to notice a change, then step back up one notch — that point is the sweet spot between small and sharp.
JPG, PNG, or WebP — which compresses best?
WebP almost always produces the smallest file at a given quality and supports both photos and transparency, which is why it is the modern default for the web. JPG is the most compatible choice for photographs. PNG stays lossless and is best for graphics with sharp edges or transparency, but it makes larger files for photos.
If your goal is the smallest possible photo for a website, converting to WebP while you compress usually beats compressing a JPG on its own.
Why smaller images matter
Large images are the most common reason a web page feels slow, and page speed affects both how visitors feel and how search engines rank you. Compressing before you upload cuts load time, saves mobile data for your visitors, and lowers your storage and bandwidth costs — without you having to redesign anything.
How to compress an image
- 1Drop your image onto the tool, or click to choose a file from your device.
- 2Pick a quality level, or let the tool target a smaller size automatically.
- 3Compare the before and after, and check the real percentage saved.
- 4Download the compressed image — the file name keeps its original meaning.
When to use Compress image
- Speeding up a website or online store where large images slow the page down.
- Getting a photo under an email or upload size limit.
- Trimming storage on your phone or computer without deleting anything.
- Preparing images for a CMS that rejects files over a set size.
Tips
- For photographs, JPG or WebP at 70–80% quality is usually indistinguishable from the original at a fraction of the size.
- The tool reports the size it actually achieved, not the size you asked for — trust the number, not the promise.
Frequently asked questions
Will compressing reduce the image quality?
Only as much as you allow. At high quality settings the difference is invisible to the eye while the file gets much smaller. You always see the before/after and the exact size saved before you download.
Are my images uploaded to a server?
Yes — your images are uploaded so our server can do the work, and they are deleted automatically an hour later. No account is needed.
What image formats can I compress?
JPG, PNG, and WebP. For the smallest result on photos, converting to WebP while compressing often beats compressing a JPG alone.
Is there a limit on how many images I can compress?
You can compress a batch at once without an account. Larger batches and bigger files are available on a paid plan.