SizeLock: NoResize Compress

Xinyi Tools

About this app

SizeLock helps you compress images to a target file size while keeping the original resolution unchanged.

Choose one or more images, set a target size, and export compressed files locally to your device. SizeLock is designed for cases where upload forms require images under a specific size, but you do not want the app to resize or crop your image.

Key features:
- Compress images to a target file size
- Keep original resolution unchanged
- Import 1 to 9 images at once
- Use a slider or manual input for target size
- Save custom size presets
- Choose Auto, JPEG, PNG, or WebP output
- Preserve transparency when using PNG or Auto when needed
- Save output files locally to Pictures / SizeLock

SizeLock processes selected images locally on your device. Images are not uploaded to any server.

If a target size cannot be reached without reducing resolution, SizeLock will tell you instead of silently resizing your image.

What’s new

Updated to target Android 16 (API 36) to meet Google Play requirements. No feature changes.