Bulk Image Resizer
Resize up to 50 images at once to a KDP cover, A+ Content, social media or custom size. Crop, pad or fit, save as JPG, PNG, WebP or AVIF, and download them all as a ZIP. Free, in your browser.
How it works
Drop up to 50 pictures
PNG, JPG, WebP or AVIF, from a camera, a phone, Canva or an AI image generator. Nothing is uploaded; they are resized in this tab.
Pick the size
A KDP preset (Kindle cover 1600 × 2560, A+ Content modules, a 300 dpi page), a social media size, or your own width and height. Fit, crop, pad or stretch to it. The first picture shows large, so a wrong setting is seen on one picture, not fifty.
Download
One file, or all of them in a ZIP, in JPG, PNG, WebP or AVIF, each named with its new size.
Bulk image resizer: many pictures, one size, one ZIP
This bulk image resizer takes up to 50 pictures and gives them all the same size in one go: a kindle cover resizer preset (1600 × 2560), the A+ Content modules, Instagram, Pinterest, YouTube and Facebook sizes, or a width and height of your own. It is a batch image resizer that runs in your browser, so nothing is uploaded.
Choose how each picture meets the size: crop it to fill, pad it with a border, fit it inside, or stretch it. Save as JPG, PNG, WebP or AVIF and download one image resizer zip with every file named for its new size.
KDP sizes
Kindle eBook cover 1600 × 2560, Kindle interior images 1200 × 1800, A+ header 970 × 600, banner 970 × 300, premium 1464 × 600, card 300 × 300, and print pages at 300 dpi: 2550 × 3300 for 8.5 × 11 in, 1800 × 2700 for 6 × 9 in.
Social media sizes
Instagram 1080 × 1080, 1080 × 1350 and 1080 × 1920 stories; Facebook 1200 × 630 and 851 × 315 covers; Pinterest 1000 × 1500; YouTube thumbnails 1280 × 720; X 1600 × 900; LinkedIn 1200 × 627.
People also search for
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Why it matters
A real resampling filter
Lanczos, the filter photo editors use, not the browser's quick scaling: text and edges stay crisp when a picture is made smaller, and an enlargement is smooth, not blocky.
The right shape, your way
Crop to fill the size exactly, keep the whole picture with a border in a colour you choose, keep its own shape inside the size, or stretch it.
Private and free
Every picture is resized on your own computer. Nothing is sent anywhere, and there is no sign-up.
Questions
Is the bulk image resizer free?
Yes, and your pictures never leave your computer.
Can I resize images to a percentage?
Yes: choose Percentage, or Longest side for a set number of pixels on the long edge.
How many images can I resize at once?
Up to 50 at a time. Add more after downloading, or press Clear and start a new batch.
What size is a Kindle eBook cover?
1600 × 2560 px, a 1 : 1.6 shape, as KDP recommends. Choose the Kindle eBook cover preset and "Crop to fill" for an exact fit.
What sizes are A+ Content images?
970 × 600 for the header image with text, 970 × 300 for a banner, 1464 × 600 for a premium full image and 300 × 300 for an image-and-text card.
Will resizing make my picture blurry?
Making a picture smaller keeps it sharp. Making it bigger cannot add detail that is not there: over 2× the page says so. For a sharper enlargement, use the <a href="upscale-image.html">image upscaler</a>.
Can I keep the whole picture without cropping?
Yes: "Fit inside" keeps the picture's own shape, and "Pad with a border" gives the exact size with a border round it.
Does KDP need 300 dpi?
For print, yes: an 8.5 × 11 in page at 300 dpi is 2550 × 3300 px, and a 6 × 9 in page 1800 × 2700 px; both are presets. For pages with margins and bleed, and dpi written into the file, use the <a href="kdp-images-converter.html">KDP images converter</a>.