
Resizia
图片改尺寸 · 压缩到指定大小
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Free
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About
Resizia is a simple, focused tool for changing an image's dimensions and file size. Scale photos to exact pixel dimensions, or compress them below a target file size such as "under 200 KB" – handy for website and form uploads, web images, email attachments and everyday sharing.
THREE WAYS TO RESIZE
• Dimensions: enter width and height in pixels with the aspect ratio locked by default, or tap 25%, 50%, 75% or 100%
• File size: enter a target in KB or MB; Resizia finds the highest quality that fits and reduces dimensions only when needed
• Both: resize to exact dimensions first, then compress below the target size
• Output as JPEG, PNG or HEIC with adjustable quality (50–100)
CROP RATIOS AND SMART CROP
• Crop to 1:1, 4:3, 3:4, 16:9, 9:16, 3:2 or 2:3 at the maximum resolution for that ratio
• Smart crop finds the main subject or a face on your device and keeps it in the frame
• Drag the crop frame to choose exactly what to keep; in batch mode each photo can be adjusted individually
COMMON SIZES AND CUSTOM MODES
• Built-in reference sizes such as profile photo 1:1, square 1:1, portrait 3:4 and 4:5, vertical 9:16, article cover, wide cover, banner 3:1 and video thumbnail 16:9, center-cropped when the ratio differs
• Save up to 20 sizes as "My presets", with an optional file-size limit
• Custom modes save a whole setup – mode, size, file size, format, quality, crop and more – under a name you choose, ready to apply in one tap (up to 20)
BATCH PROCESSING
• Process up to 9 photos at once with the same settings, with progress and cancel
• Save all or share all when finished
IMPORT FROM OTHER APPS
• Share extension "Add to Resizia": select images in Photos or another app, tap Share and choose Resizia – up to 9 at a time, images only
• Use "Open in" from Files and other apps to load an image directly
PRIVACY FIRST
• "Remove photo info (location, etc.)" is on by default, so outputs contain no location, device model or capture time
• Everything is processed on your device – no photos are uploaded
• No account or sign-in, no ads, no analytics
• Photos are chosen with the system photo picker; the app asks for Add Photos Only access when you save, and never reads your library
• The full privacy policy is available in About & Help
MORE
• Remembers your last settings, with one-tap Restore defaults
• Light and dark appearance with Night mode, plus Elder mode with larger text and buttons
• 35 interface languages – switch in the app or follow the system
• Designed for iPhone and iPad, with portrait and landscape layouts on iPad
Note: built-in sizes are common reference values that you can change as needed.
Support: 35309459@qq.com
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What's New in Resizia
1.3.16
November 7, 2026
• Improved iPad layouts: in portrait the two columns match in height, with copyright, version and filing number centered below; in landscape those three appear on one line so the full page stays on screen • On the landscape home screen, Batch sits on the same row as Photos and Files, and the feature cards are no longer clipped • The iPad Settings sheet no longer shows copyright, version or the filing number • The footer now includes the app filing number 京ICP备2026071774号-2A • Fixed a crash that could occur on some iPads
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