skwish

private

browser-based

Compress audiobook cover art to the size distributors actually accept

Audiobook distribution is unusual among publishing platforms: the cover spec is strict and it is square. ACX and Audible want 2400x2400 pixels; Findaway and Spotify Audiobooks ask for the same square minimum. Most authors and narrators start from a rectangular ebook cover, a print-ready PNG, or a design export that is 4000px or more on the long edge and several megabytes heavy. Upload forms reject it, or accept it and resample badly.\n\nTwo operations fix that, and they are different. Resizing gets the file to the required 2400x2400 square. Compressing brings the byte count down so the upload form takes it and storefront thumbnails load instantly. Skwish does both in the browser, so the artwork never touches a server. Batch a whole series, apply one setting, and export a single ZIP.

Search match

This page is tuned for compress audiobook cover so visitors land in the right workflow immediately.

Fast output

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

Batch ready

Compress multiple files and pull the results down as 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 audiobook cover”, 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

Resize a rectangular ebook cover to a square 2400x2400 audiobook cover before submitting to a distributor.

Compress an oversized print-ready cover export so the upload form accepts it without visible quality loss.

Batch a series of audiobook covers to one consistent size and export them as a single ZIP.

Compress images now

Opens the upload box on the free browser compressor.

Drop images in the browser

Keep the whole workflow local. Nothing leaves your device unless you download it.

Set the output you need

Adjust compression until the file size and quality fit the job instead of guessing.

Download a clean result

Save one file or a ZIP bundle with skwish-prefixed names so the output is easy to find.

Square first, then bytes

Use these before you upload or share the page.

Set both dimensions to 2400 for ACX and Audible. A non-square cover is rejected outright, no matter how small the file is.

Keep quality at 85-90 for cover art. Storefront thumbnails and the in-app player both render the cover, and gradients and text edges are where compression artifacts show first.

Compress from the highest-resolution source you have. Re-compressing an already-compressed JPEG stacks artifacts instead of removing them.

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.