iSize

Advanced image resizer and converter for iPhone and iPad.

For iPhone and iPad

Resize & Convert Images on iPhone and iPad

iSize is an advanced image resizer and converter for iPhone and iPad. Resize a photo to exact pixel dimensions, a percentage, a print size in inches or centimeters, a megapixel count, or a maximum file size – for example, make an image file at most 1 MB for an upload limit. Convert between JPEG, HEIC, TIFF, PNG, GIF, and BMP with control over compression quality, and choose how aspect ratio changes are handled: crop, deform, or add borders.

Beyond resizing, iSize can crop and straighten, batch process multiple images at once, enlarge small images with high-quality AI upscaling, view and edit EXIF, IPTC, and GPS metadata, and print at an exact size. Quick and easy for preparing photos for social media, yet precise enough for serious graphic design work. Your size presets sync across devices via iCloud. iSize is free to download and try for as long as you like, with full access via subscriptions or a one-time lifetime purchase.

Powerful Features

Import from Photos, Files, or Camera

Import images from your Photos Library, any files, or take a photo directly with the camera.

Advanced Resizing Modes

Flexible resizing for every need:

Define the image width, height, or both.
Define the resolution in megapixels. For example, make a 5-megapixel image.
Limit the file size. For example, make an image file at most 1 MB.

Choose what happens when the aspect ratio changes: crop, deform, or add borders of any color. And if the image is too small: enlarge it or add borders.

Size Presets, Synced via iCloud

Save your size configurations as presets and reuse them anytime. Automatically synchronized across all your devices.

Image Formats

Save images in your preferred format:

JPEG, HEIC (iPhone 7+), TIFF, PNG, GIF, BMP

Control format-specific settings: compression quality for JPEG and HEIC, lossless compression for TIFF.

Flexible Size Units

Define dimensions in pixels, percent, inches, centimeters, or millimeters. Set print resolution in pixels per inch or per cm. Define file size in MB, MiB, KB, KiB, or bytes.

Image Metadata Editor

View and edit image metadata including EXIF, IPTC, GPS, and more.

Image Printing

Print images at the exact defined size, or scaled to fit the page.

Transparent Images

Full support for images with transparency. Preserve or configure the background when converting.

iSize Screenshots

iSize on iPhone: welcome screen listing key features: resize, batch resize, crop and straighten, change format, transform, edit metadata, export, and print

iSize on iPhone: advanced resizing options: dimensions in pixels, percent, or print size, megapixels, max file size, AI enlargement, and aspect ratio handling

iSize on iPhone: home screen with options to process a single image from Photos, Files, or camera, or resize multiple images

iSize on iPhone: single image editor with resize, crop and straighten, change format, transform, and edit metadata actions

iSize on iPhone: resizing an image by width and height in percent, with borders added to keep the aspect ratio

iSize on iPhone: resizing a photo to a 4 x 6 inch print size at 300 pixels per inch

iSize on iPhone: resizing a photo to an exact megapixel count

iSize on iPhone: limiting an image to a maximum file size of 1 MB in HEIC format with quality control

iSize on iPhone: cropping and straightening a photo with aspect ratio presets

iSize on iPhone: viewing and editing image metadata, with options to clear location, camera info, keywords, and IPTC

Curious about the details? Read our guides on how to reduce image file size and what megapixels really mean. And if you need the same power on your Mac, check out iBatch, our batch image converter for macOS.

Pricing

iSize is free to download, and you can try it in two ways:

An unlimited free trial mode, where exported images are watermarked.
A fully functional free trial for a few days, included with some subscriptions.

Full access is available through subscriptions or a single lifetime purchase.

System Requirements

iSize requires iOS 15.0 or later on iPhone, and iPadOS 15.0 or later on iPad.