A Powerful On-Device Tool for Resizing and Converting Images
Kompressor (a compressor with a K!) is a powerful yet simple image converter for your iPhone and iPad. Convert your photos — RAW files from your iPhone or DSLR camera*, or standard lossy images already in your library — into compressed JPEG or HEIC formats while maintaining control over quality, size, and metadata.
REQUIREMENT: You need existing photos in your Photo Library to convert. Kompressor does not capture photos — it converts the image files you already have.
KEY FEATURES:
Convert up to 25 images at once
Support for both RAW and standard (JPEG, HEIC, PNG) input formats
Support for JPEG and HEIC output formats
Adjustable compression levels (50%, 75%, 95%)
Flexible image resizing options
Complete control over metadata preservation
Detailed metadata options including EXIF, GPS, TIFF, and more
Device-specific metadata support (Apple, Canon, Nikon, Fuji, Olympus, Pentax, Minolta)
Comprehensive compression statistics and charts
Preview converted images before saving
Clean, intuitive interface
100% offline processing - no data collection
Support for iPhone and iPad
METADATA CONTROL: Kompressor gives you granular control over which metadata to preserve:
Image Depth & Orientation
EXIF, GPS, and TIFF metadata
IPTC information
Camera manufacturer-specific data
DNG metadata
Custom creation date options
COMPRESSION OPTIONS: Choose from three quality levels:
50% - Maximum compression for space savings
75% - Balanced quality and size
95% - Near-original quality with significant size reduction
RESIZING OPTIONS: Reduce image dimensions while maintaining aspect ratio:
50% - Half the original size
75% - Three-quarters of original size
100% - Keep original dimensions
PRIVACY FIRST: All processing happens directly on your device. No analytics, no tracking, no cloud processing. Your photos stay completely private.
PERFORMANCE: Optimized for modern iOS devices with support for the latest iPhone and iPad models. The app limits batch conversions to 25 images to ensure optimal performance.
Perfect for photographers who want to:
Free up storage space by converting RAW or JPEG files
Re-compress existing photos to smaller sizes
Share photos in more compatible formats
Control file sizes for uploads
Manage photo metadata
Convert images without complex desktop software
Made with love in Toronto
* Digital Negative (DNG) file
Note: Photo library access is required to convert images.
Although iOS10 provides an option to send a compressed version of a photo in the Messages app, I'm just wondering why the implemented feature is not as practical as what this app offers. Unlike the built-in feature, you can simply reduce the size of your photos with a single tap without sacrificing the quality so much.I hope it shows bigger image preview panes in portrait mode.
Good first try
toddhunt
I kinda like it, it addresses an important need. Changes I would like is to make the compression function stand-alone, I don't want or need yet another filter generator, there are hundreds of filter apps already. Also would like a variable slider not just 3 presets. Finally (and this is the dealbreaker) PLEASE add a "save-as" or "save-copy" so it doesn't replace my original with a compressed version. That ruins it for me.
Developer Response
Hello, I will add a new option to do this in the next update.
Excellent app!
Tga5843
I’ve had this app for several years and it works great! Does exactly what it says it does. Even after compressing and then making changes to photo, you can compress again. It May not be much but every little bit helps!! It’s never bugged out or glitched on me. Very reliable!! Thank you!!!
Video compressor
vb1619
Hi i need one apps same with this kompressor but fir video to save and replace my recorded video
New in this version:
- Tap and hold any picture preview cell to open the full-size image.
- On the Results screen, you can now tap and hold individual images to share them quickly. A share option will appear in the top-right corner.
Version 4.1.1
The developer, Maysoft Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Maysoft Inc.
Size
2 MB
Category
Photo & Video
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
iPad Requires iPadOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
