Free Online Image Compressor

An image compressor saves an image again so the file takes up less space. Lossy compression, used by JPG and WebP, drops fine detail that is hard to see. Lossless compression, used by PNG, stores the same pixels in a smarter way. This tool lets you set a quality from 10 to 100, keep PNG lossless or cut its colors, or type a target size in KB or MB and let it work down to that size.

Type your number in Target file size in the Compression section and pick KB or MB. The compressor lowers the quality in up to 8 steps, checking the size each time. If that is not enough, it shrinks the width and height in up to 6 more steps. If the target still can't be reached, you get the smallest file it could make. For GIF, it lowers quality and colors instead of the size. Target size works with JPG, WebP and GIF, and with PNG once Lossless PNG is off. Animated WebP files ignore it. Common sizes like 100KB, 200KB, 500KB and 1MB also have their own pages with the target already set.

JPG, JPEG, PNG, WebP, BMP and GIF work as both input and output. JPG uses the quality slider from 10 to 100, plus a progressive option. PNG starts lossless, with an optional color limit from 2 to 256 and dithering. WebP uses the quality slider and can keep see-through areas and animation. GIF gets a color limit from 2 to 256. BMP output has no compression, so use it only when a program needs it. Leave Save image as on Original to keep the format, or pick another to compress and convert in one step.

It depends on the mode. Lossless PNG keeps every pixel the same, so there is no quality loss. JPG and WebP are lossy, but you choose how much. At quality 85 to 95, a photo usually looks the same as the original on screen. Below about 50, you may see blocky patches in smooth areas like skies and skin. Open the compare view to check the result before you download.

It depends on the image, so each row shows your real saving as a percentage. The biggest drops come from saving a PNG photo as JPG or WebP, from lowering the width and height, and from cutting colors in PNG and GIF files. A file that is already well compressed may shrink very little. If Strip metadata is off, no target size is set, you kept the same format and the new file would be bigger, you get the original back instead.

No. Your images are compressed on your own device. They are never sent to a server or stored by us. You can check this yourself: open your browser's developer tools, go to the Network tab and compress an image. You will see no file upload. That makes the tool a good fit for client photos, ID documents and unreleased product shots.

Yes. Add several files and your settings for quality, target size, format, resize, metadata and filename suffix apply to all of them. Each file gets its own row with the old size, the new size and the percentage saved. One file downloads on its own. Two or more download together as picssizer_compressed.zip, each name ending in _compressed unless you change it under Advanced. For long lists, the bulk image compressor gives you the same controls.

There is no set limit on file size, and no limit on how many images you compress. Your own device does the work, so very large photos or big batches use more memory and can be slow on older phones. If a batch feels slow, split it into smaller groups.

No. There is no signup, no email, no login, and no payment. Nothing is limited behind a plan. You get the full set of controls right away. That includes the quality slider, target file size, resize with four fit modes, and PNG and GIF palette settings. It also includes format conversion, a background color for transparent images, metadata stripping, progressive JPEG, and the filename suffix. Compressed files download without a watermark, and there is no limit on how many images you compress.

The quality slider runs from 10 to 100 and starts at 75, which suits most web images. For hero images and portfolio photos, try 85 to 90. For blog images and product thumbnails, 75 to 85 keeps files small with little visible change. For a photo that only needs to fit a size limit, skip the slider and use the target file size field instead, since the tool will find the quality level for you. For icons, logos, and screenshots, keep PNG lossless mode on, and only turn it off if you need a much smaller file. Compare a couple of settings in the preview before you commit to a batch.

Yes. The Resize section has three modes. Original keeps the width and height. Max dimension caps the longest side at a pixel value, 1920 px by default, and leaves smaller images as they are. Percentage scales down by any value from 1% to 100%. When resizing is on, you also pick a fit mode: Fit keeps the shape, Contain adds bars to fill the box, Cover fills the box and trims the edges, and Stretch ignores the shape. Combining a smaller size with a target file size gives you the biggest drop.

JPG cannot store transparency, so the transparent pixels have to be filled with something. When you set the output format to JPG, a Background color picker appears in the Compression section. White is the default, and you can type any hex code or pick a preset. Transparent areas come out in that color and the rest of the image is unchanged. If you need transparency in the output, choose PNG or WebP instead, since both keep the alpha channel intact.

Yes. Strip metadata sits under Advanced and is on by default, so EXIF fields are removed as the file is compressed. That covers GPS coordinates, camera make and model, lens details, and the capture date and time. It also removes the embedded color profile, which is why the file ends up slightly smaller. Turn the toggle off when you need that data kept, for example when a client needs the shooting details or a print workflow depends on the color profile. Nothing is added back later, so the downloaded file matches exactly what the toggle says.

Yes, in two ways. Keep Save image as on GIF or Original and lower the GIF colors, from 2 to 256. Fewer colors make a smaller file, and every frame stays. Or save as WebP, which keeps the animation and often makes a smaller file than GIF. Saving as JPG, PNG or BMP keeps only one frame, and the settings panel shows a warning when you pick one of those.

Open this page in your phone's browser, tap to choose a photo, and the same editor opens. Set a quality or a target size, press Compress, then download. It works the same on iPhone and Android, with no app to install. The compressor takes JPG, PNG, WebP, BMP and GIF files, so convert an iPhone HEIC photo to JPG first.