The PX7 Image Compress app icon

PX7 Image Compress

Compress images to an exact file-size limit.

Set 250 KB, 1 MB or any custom maximum. Compress finds the highest image quality that fits - for one image or a whole folder, without uploading it.

Download free 7-day trial Buy for €12

Notarized by Apple · less than 5 MB · no card · seven-day trial · €12 once · version 1.x updates · up to seven Macs

PX7 Image Compress showing a 3.4 MB PNG reduced to 904 KB at 99 percent quality without changing its dimensions

Homebrew

Install the same notarized trial from Terminal.

brew install --cask px7digital/tap/px7-image-compress

The public cask pins version 1.0.3 and verifies the downloaded ZIP against its published SHA-256 checksum. The dedicated distribution and support repository documents the release and provides a public issue tracker.

Get every image under the target KB or MB.

Actually under the target

Enter 250 KB, 1 MB or any other limit. Every saved file is verified to be below it - not merely estimated. For the free Preview method and format tradeoffs, see how to compress an image to 1 MB on a Mac.

The best quality that fits

Compress searches for the highest usable quality below your limit instead of making you guess at a percentage.

Keep every pixel when possible

Dimensions remain untouched while quality can do the job. If the limit is impossible, Compress can reduce dimensions just enough - or fail instead, if you choose to protect them.

See the real result first

Switch between Original and Compressed, then compare actual file size, dimensions, quality and savings before processing the folder.

Smart format, or your format

Let Smart protect transparency and retain efficient source formats, or choose JPEG, HEIC, WebP or lossless PNG yourself.

Share without sharing your location

Keep metadata, remove GPS coordinates, or remove descriptive metadata from every compressed copy.

One image or the entire folder

Drop complete folders, choose the rule once and safely stop after the current image whenever you need to.

Your originals stay untouched

Compress writes new, collision-safe files. Nothing is uploaded, and an existing file is never overwritten.

Feature summary

The details

Quick answers

Questions about PX7 Image Compress

What is PX7 Image Compress?
Compress images under an exact KB or MB limit on your Mac. Preview the result and try PX7 Image Compress free for seven days with no card required.
Where does PX7 Image Compress do its work?
PX7 Image Compress processes images locally on your Mac.
How much does PX7 Image Compress cost?
PX7 Image Compress costs €12 once. It includes a seven-day trial, and one app-specific key can be used on up to seven Macs. There is no subscription.
Which Macs can run PX7 Image Compress?
macOS 14 Sonoma or later, Intel or Apple silicon
How do I reduce a JPEG to 1 MB?
Set the maximum file size and the image is compressed to the best quality that still fits underneath it — rather than guessing at a quality percentage and checking the result. PX7 Image Compress has presets for 250 KB, 500 KB, 1 MB and 2 MB, or you can type your own limit.
How do I compress images without losing quality?
Compression always trades some detail for size, so the useful question is how little you can give up. Working from a target size finds the highest quality that fits, and where an image can be made smaller without discarding any pixels, that is done instead.
Can I compress a whole folder of images to the same size limit?
Yes. One image or an entire folder can be processed against the same limit, and each file is compressed individually to get as close to it as possible.
Will compressing overwrite my originals?
No. Compressed copies are written as new files and the originals stay exactly as they were.