Image Compressor

It combines your quality setting with the target max size you set. The underlying library re-encodes the file at your chosen quality, then keeps reducing until the output fits under the size cap. If your cap is generous, quality alone decides the result.

Yes. Compression runs on your own machine using the browser-image-compression library inside a web worker. Your photos never touch a server, which also means there's no upload wait before processing starts.

It sets a hard ceiling between 0.1 and 10 MB for each output file. The default is 1 MB, a comfortable weight for web pages and email attachments. The tool iterates internally until the result comes in under that number.

Only in one case: if the longer edge exceeds 4096 pixels, the tool scales it down to 4096. A standard 4032x3024 phone photo squeaks under that cap, so its dimensions stay untouched.

For most photos, yes. WEBP usually produces smaller files than JPG at similar visual quality, and every modern browser displays it. Stick with PNG output only when you need lossless graphics or transparency.

Speed, mostly. To reduce image size online here, you drop a file, press one button, and you're done, with no app launch or export dialog. For batch jobs the gap widens, since the ZIP output packages everything automatically.

There's no fixed count. Each file can be up to 50 MB, and batches download as a single compressed-images.zip archive. Very large batches just take longer, since everything is processed on your own hardware.

The High, Medium, and Low presets jump to sensible quality values, while the slider lets you land anywhere in between. Lower values mean smaller files with more visible artifacts, so nudge it until you find the trade-off you can live with.

Drop the file in, pick a quality preset, and press Compress. That's all it takes to reduce image size here, and it'll reduce image file size by re-encoding the photo more efficiently, usually cutting a multi-megabyte shot down to a fraction of its weight.

Use the target max size slider. Set it to your cap, anywhere from 0.1 to 10 MB, and the tool keeps squeezing until each file lands under it, which is how you compress image by size instead of by guesswork. Being able to reduce image size in mb like this is handy when a portal rejects anything over, say, 2 MB.

Yes. You can reduce image file size online with no account and no watermark, and it stays reduce image size online free no matter how many files you run. The processing happens on your device, so there's no server bill to pass on to you.

You can. There's no counter, so compress image size online free as often as you like, and reduce image size free every session. Large batches only take longer because they run on your own hardware, not because anything is throttled.

Yes. As an online image compressor it reads JPG, PNG, and WEBP, and the Export format row lets you keep the original type or switch. That flexibility is what makes it a general online image compression tool rather than a JPEG-only one.

Load the photo, leave the quality on a middle preset, and press Compress. You compress image size online in one pass, and the before and after readout shows exactly how much you decrease image file size, so you can nudge the quality down further if there's room.

It does. Point it at a chunky JPEG and it works as a jpg file size reducer online, re-encoding at your chosen quality to trim the weight. Since it also serves as an image compressor online jpg users can rely on, keeping the output as JPG is just one option in the format row.

Yes. Drop the folder in and this images size reducer applies the same settings to every file, then hands back a single compressed-images.zip. Because the images size reduce step runs sequentially on your machine, a big batch just takes a little longer to finish.

Mostly it compresses. It only shrinks dimensions when the longest edge tops 4096 pixels, in which case it scales down to that. So it can compress and resize image files in that narrow sense, but for exact dimensions do the compress resize image job in two steps and set the size with the Image Resizer first.

Within limits. Any lossy format trades some detail, but at a High preset the change is hard to spot, which is the honest meaning of compress image size without losing quality. For a true image file size reducer without losing quality, keep the format on PNG or original, though the savings will be smaller.

Export to WEBP at a medium quality and set a sensible target size. That combination will optimize images for web, and the British spelling crowd searching optimise images for web gets the same result. It's the standard way to compress images for web so pages load fast without visible artifacts.

Aim for WEBP output and a target around a few hundred kilobytes for a full-width banner. To compress image for website use, that keeps the picture crisp while cutting load time, and the same recipe helps you optimize images for website galleries where many photos stack on one page.

Not really. It's an image pixel compressor in the sense that it compresses the encoded pixels, but it doesn't drop resolution except the 4096-pixel cap on the longest edge. If you actually want fewer pixels, resize the image separately; compression alone keeps your dimensions intact.