Free tool · No sign-up

Free Image Compressor: Shrink JPG, PNG and WebP in Bulk

Last updated By Avalon

Make photos and images smaller for email, websites and upload forms, keeping their format or switching to WebP, many at once.

    Your images never leave your device. Conversion happens in your browser, so nothing is uploaded to a server.

    Converting saves a new image, so hidden photo details such as GPS location, camera, date taken and author are not copied into it. One exception: when the new file would be the same format and size but larger, the original is kept as it is, details included.

    What this tool does

    To compress an image for free, drop it above, pick a quality and press Compress images: you get a smaller file in the same format, with no sign-up and no watermark. It works on many images at once, which makes it quick to shrink a folder of phone photos before emailing them or putting them on a website.

    How to use it

    1. Drop your images into the box above, or click it to choose them.
    2. Leave Convert to on Same as original, or pick WebP for the smallest files on websites.
    3. Set the Quality. Lower means smaller files: 70 to 80 percent looks the same as the original for most photos.
    4. Optionally set a Max width or Max height. Shrinking a 4,000-pixel phone photo to 1,600 pixels makes the biggest difference.
    5. Press Compress images, then download each file or press Download all.

    Settings for common goals

    GoalConvert toQualityMax width
    Email a batch of phone photosSame as original75%1,600 px
    Photos for a blog or online shopWebP80%1,200 to 1,600 px
    Upload form with a size limitSame as original70%1,200 px
    Keep as much detail as possibleSame as original90%Leave empty

    Tips

    Free, Pro and Pro+

    FreeProPro+
    Images per batch30500500
    Download all as one ZIP—YesYes
    Saved presets—YesYes
    Custom file names—YesYes
    See each photo's info and choose what to keep (date, camera, author, location)—YesYes
    Result qualityThe same on every plan
    Server tools paid with creditsWith a credit packWith a credit pack300 credits every month

    Pro+ credits pay for server tools: higher-accuracy speech to text, higher-accuracy auto subtitles, fast server voices and ai pdf summaries, answers and translation. A credit pack (150 credits, valid for 12 months) works on any plan. Compare plans.

    Frequently asked questions

    How do I compress an image for free?

    Drop your images above, choose a Quality (72 percent is a good start) and press Compress images. Each image shows its new size, and you can download them one by one or all at once, with no sign-up and no watermark.

    How much smaller will my images get?

    It depends on the image. Large phone photos usually shrink the most, and a photo that was already saved at low quality shrinks little. Each file in the list shows its new size, so you can see the result before you download.

    Does it keep the format?

    Yes, with Convert to on Same as original, JPG stays JPG, PNG stays PNG and WebP stays WebP. iPhone HEIC, GIF and BMP files are saved as JPG.

    Why did my PNG not get smaller?

    PNG is saved without losing detail, so the quality slider does not change it. If a compressed copy would be larger, the original is kept. For photos and screenshots, choose WebP or JPG under Convert to: they are usually much smaller.

    How do I get an image under a size limit, such as 1 MB?

    Lower the Quality, set a Max width (1,600 or 1,200 pixels is plenty for most forms and websites), or both. The new size is shown next to each image, so you can adjust and try again.

    Are my images uploaded anywhere?

    No. The images are compressed inside your browser, on your own device. Nothing is sent to our servers.

    How many images can I compress at once?

    Up to 30 images per batch, free. Avalon Pro takes up to 500 at once and adds a ZIP download, saved presets and your own file names.

    Get each new experiment by email

    One short email at the end of each month: the experiments we ran, the numbers, and the steps you can copy. Unsubscribe any time.