Downpixel
Shrink pixels, not just bytes
Free
Crop, stretch and downscale with a live pixel-true preview and real file-size readout. Everything happens on your device — no uploads, no account, no tracking.
Most "photo compressors" only squeeze the file — the pixels stay the same. Downpixel reduces the true pixel resolution of your photos: fewer pixels, dramatically smaller files, and you decide the exact output size.
■ True downscaling
A high-quality multi-stage scaler resamples your photo to the resolution you choose, avoiding the jagged edges and moiré of one-step resizing. The logarithmic slider gives fine control at low resolutions and gently snaps to common sizes (128 / 512 / 1080 / 1920…).
■ Crop & Stretch
Six aspect ratios — original, free, 1:1, 4:3, 3:2, 16:9 — with a rotatable crop frame. Stretch mode squeezes the whole picture into a new ratio without losing content. Chain both modes freely.
■ Honest preview
The preview is the actual encoded result, and the size estimate is the real exported file size. Hold the photo to compare with the original. What you see is exactly what you get.
■ Flexible export
JPEG, HEIC and PNG, with transparency handled automatically. Save to your library, share or store to Files via the system share sheet.
■ Fully private
Every pixel is processed on your device: no uploads, no account, no analytics, no ads, no network required. The system photo picker only shares the photos you choose.
Perfect for:
· Sites and forms with image size limits
· Shrinking photos before messaging or email
· Preparing assets at exact resolutions for web, apps or avatars
· Slimming down photos to save storage
Works on iPhone, iPad and Mac.
Ratings & Reviews
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The developer, 衡希 陈, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 衡希 陈
- Size
- 1.4 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 CHX