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universal Image Compressor

universal

Free Image Compressor

Make JPG, PNG and WebP images smaller — free, instant, and your pictures never leave your device.

✓ JPG, PNG, WebP✓ Never uploaded✓ Batch and ZIP✓ No account needed

Drop images here

JPG, PNG or WebP · up to 100 images · processed on your device

75

    Quality applies to JPEG and WebP. PNG is lossless, so choose WebP or JPEG for much smaller files. Location and camera data are removed.

    Your images never leave your browser. Nothing is uploaded to a server and nothing is stored.

    How it works

    Three steps, no upload

    Add your images

    Drop JPG, PNG or WebP files onto the box, click Choose images, or paste an image from your clipboard. You can add up to 100 images at once.

    Set quality and size

    Move the quality slider, choose an output format and, if you like, a maximum size for the longest side. Every image is compressed again at once when you change a setting.

    Download

    Check the before and after size of each image, then download single files or all of them as one ZIP. Images that cannot be made smaller are marked and kept as they are.

    Why it matters

    Smaller images, nothing uploaded

    Most online compressors send your pictures to a server. This one does the work inside your browser, so private photos stay private.

    Large images slow down web pages, fill up mailboxes and use up phone storage. Compressing them reduces the file size by lowering the quality a little, by using a more efficient format such as WebP, or by reducing the number of pixels. This tool lets you control all three. Because the compression runs on your own device, there is no upload wait, no daily limit set by a server and no copy of your pictures anywhere else. The result is a trade-off: lower quality means a smaller file, so check the preview before you use the images.

    Use cases

    What people use an image compressor for

    Faster websites

    Reduce photos before you upload them to a blog or shop so that pages load faster, especially on mobile connections.

    Email attachments

    Shrink photos so that they fit under the attachment limit of your email provider.

    Forms and applications

    Meet the maximum file size of an upload form, such as a visa, school or job application.

    Phone storage

    Make copies of large photos and screenshots that take up less space on your device or in the cloud.

    Privacy

    Remove location and camera data from photos before you share them, because compression drops that metadata.

    Social media and chat

    Prepare images at the size a platform actually shows, instead of uploading a 12-megapixel original.

    Under the hood

    How the compression works

    Your browser decodes each image, draws it onto a canvas at the size you chose, and encodes it again as JPEG, PNG or WebP with the quality you selected. JPEG and WebP are lossy formats: a lower quality setting discards more detail and gives a smaller file. PNG is lossless, so re-encoding it rarely makes it much smaller, and the tool keeps the original when the result would not be smaller. Images with more than about 16.7 million pixels are scaled down to that size. Transparent areas turn white when you convert to JPEG. Metadata such as EXIF, GPS location and embedded color profiles is not copied into the new file. All of this uses standard browser features, and the files are never sent over the network.

    Questions

    Frequently asked questions

    Basics
    Is this image compressor really free?
    Yes. It is completely free, with no watermark and no paid tier. There is no daily limit set by this site, because the work runs on your own device.
    Do I need an account to use it?
    No. There is nothing to sign up for, no email address to give and no login. Add your images, set the quality and download the result.
    Are my images uploaded or stored anywhere?
    No. The compression runs in your browser. Your images are not uploaded, logged or stored by this site, and they are gone when you close or reload the page.
    How does it make images smaller?
    It decodes the image in your browser and encodes it again with a lower quality setting, in a more efficient format, or at a smaller size, depending on your choices. JPEG and WebP quality settings discard fine detail that is hard to see, which is why the file becomes smaller.
    Formats and quality
    Which image formats are supported?
    JPG (JPEG), PNG and WebP can be added. The output can be the original format, JPEG or WebP. WebP output is offered only if your browser can create WebP images. Other formats such as GIF, HEIC or SVG are not supported.
    Should I use JPEG, PNG or WebP?
    Use JPEG for photos that need to work everywhere. Use WebP for smaller files on websites and in modern apps. Use PNG for screenshots, logos and graphics with sharp edges or transparency, but expect smaller savings because PNG is lossless. Converting a photo from PNG to JPEG or WebP is usually the biggest single saving.
    What quality setting should I choose?
    A setting between 70 and 85 is a common starting point for photos and often looks close to the original at a much smaller size. Go lower for thumbnails and previews, higher for images you will print or edit again. Always look at the result, because the effect depends on the picture.
    Will compressing reduce the image quality?
    For JPEG and WebP, yes, a little: the compression is lossy. At moderate settings the difference is hard to see on a screen, but repeated compression of the same file adds up, so keep your originals and compress from them.
    Why does it say Already optimized?
    The new version would not be smaller than your original, so the tool keeps the original file. This happens most often with PNG files, which are already compressed without loss, and with JPEG files that were saved at a low quality. Try WebP or JPEG output, or a smaller maximum size.
    Can I resize the images as well?
    Yes. Choose a maximum size for the longest side, for example 1920 pixels. Images that are larger are scaled down and keep their proportions; smaller images are never enlarged. Reducing the pixel count is often the most effective way to shrink a photo.
    What happens to EXIF data and location?
    The compressed file contains no EXIF data, GPS location or camera information, because the image is re-created from its pixels. The orientation of the photo is applied before that, so it is not rotated by mistake. Embedded color profiles are dropped too, which can change colors slightly on some images.
    Technical
    How many images can I compress at once?
    Up to 100 images at a time. There is no file size limit set by this site. Images with more than about 16.7 million pixels, such as 48-megapixel phone photos, are scaled down to that size, because some browsers, notably Safari on the iPhone, cannot process larger images.
    Does it work on a phone?
    Yes. The layout adapts to small screens, and you can pick photos from your gallery or camera roll. Once the page has loaded, compression also works without a connection.
    How do I download all images at once?
    Click Download all (ZIP) to get one ZIP file with every compressed image. Files are named with the original name plus -compressed. The ZIP is created on your device as well.