skwish

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browser-based

Compress KDP book images — two caps, and only one of them is about bytes

Amazon KDP enforces two different size limits and they are easy to confuse. The cover image you upload during title setup must be under 50 MB, at least 1000 x 625 px, ideally 2560 x 1600 px, and no more than 10,000 px on either side, with a height-to-width ratio of at least 1.6:1. The manuscript file you upload has its own cap of 650 MB, and inside it KDP asks for images at a minimum of 300 DPI, inserted at their original size and never enlarged. So the compression question splits cleanly: for the cover, compress the file but keep the pixel dimensions where KDP wants them; for interior images, fix the DPI at the real print size first and compress the result. KDP also warns that it applies additional compression to covers when displaying them on the site and that you should upload with minimal compression — which means the goal is to land comfortably under 50 MB, not to squeeze the last kilobyte out. Skwish compresses to a KB or MB target, resizes to exact pixel dimensions, and shows before and after per file in the browser.

Search match

This page is tuned for compress kdp book images so visitors land in the right workflow immediately.

Fast output

See original size, compressed size, and percentage saved before you move on.

Batch ready

Drop many files, set one format and size limit, then download a ZIP.

Get to the compressor fast

Exact-intent SEO page first. Clear next step. Pretty later.

People usually search for a specific task, not a brand story. So this page keeps the promise simple: compress images without sending them to a third-party server.

Built for people searching “compress kdp book images”, not a generic landing page.

No uploads, no accounts, no waiting on a server.

See the savings before you download anything.

Batch export stays available when the job is bigger.

Best for this search

Pull a 62 MB cover export under KDP's 50 MB ceiling without changing its pixel dimensions.

Resize a cover to 1600 x 2560 px, the exact dimension KDP lists as ideal for eBook covers.

Compress interior images before inserting them into a manuscript that has to stay under 650 MB.

Shrink a batch of book images to a target size while keeping each one at or above 300 DPI at its print size.

Compress images now

Opens the upload box on the free browser compressor.

1. Drop one or many images

Drop files in the browser. Anything unsupported or over 10 MB is flagged before compression starts.

2. Set up the format

Pick WebP, JPG, PNG, or keep the original. Then set a quality or a max file size in KB.

3. Compress, then download

Press compress and watch the estimate. Save each file, or one ZIP with skwish-prefixed names.

The cover cap and the image standard are different rules

Use these before you upload or share the page.

Cover: under 50 MB, minimum 1000 x 625 px, ideal 2560 x 1600 px, maximum 10,000 px per side, ratio at least 1.6:1.

Manuscript: 650 MB maximum for the upload; inside it, images should be at least 300 DPI at final size.

KDP re-compresses covers for display anyway. Upload close to the original and rely on the 50 MB ceiling, not on aggressive compression.

Compress bytes, resize pixels. Doing both in one pass keeps the cover inside every rule at once.

Ready to compress images?

Open the free browser upload box, keep files local, and download the optimized result.

Compress images now

Related tools

Other compression pages built for specific size limits and formats.