MORIKI ENGINEERING / APP SUPPORT

Image Compressor Support

Smaller images. A simple workflow.
Select images from Photos or Files, choose a target file size, and scroll down to compress, save and share—all on one screen.

This guide covers version 1.1. Batch compression and English app text are features of version 1.1.

01 / GET STARTED

How to use

Compress one image or a batch of up to 10 images. The target size applies to each image, not to the combined batch.

  1. Tap Choose Images.
  2. Choose Choose from Photos or Choose from Files, then select 1–10 images.
  3. Scroll down to Target size per image and choose a size.
  4. Tap Compress Images. Images are processed one at a time; a progress indicator shows how many have been processed.
  5. Scroll down to see the results, then save or share them.

If you select more than 10 images in Files, the app asks you to select no more than 10. If some images cannot be read, check the selection before compressing.

02 / TARGET SIZE

Choose your target size

The default target is 1 MB per image. The app adjusts JPEG quality and, when needed, image dimensions to fit the selected target. Compressed images use JPEG format.

After compression, you can see each image’s original size, compressed size and percentage reduction. The app may be unable to meet a target for some images; check the completion count and results.

03 / SAVE & SHARE

Save and share

Save to Photos

Tap Save to Photos to save all successfully compressed images in the current results. Allow the app to add photos when iOS asks for permission.

Share images

Tap Share to open the iOS share sheet with all successfully compressed JPEG files. Available apps and destinations depend on your device.

04 / FAQ

FAQs

Can I compress more than 10 images at once?

No. Select up to 10 images per batch. For more images, save or share the current results first, then choose another batch.

Is the target size for the whole batch?

No. A 500 KB target, for example, applies to each individual image.

Why can’t I save to Photos?

In iPhone Settings, open the app’s photo permissions and allow adding photos. Then return to the app and try Save to Photos again.

Will my original images be deleted or replaced?

No. The app creates compressed copies. It does not delete or overwrite the original images.

Will image quality or dimensions change?

They can. Compression adjusts JPEG quality and may reduce dimensions. A smaller target can mean more visible changes. Check the result before using it. The app does not guarantee a smaller file than the original.

What if an image cannot be loaded or compressed?

Try selecting the image again from Photos or Files, or choose a larger target size. Check how many images completed successfully. Save or share the available results before selecting a new batch.

Are my images uploaded for compression?

Compression runs on your device. Your selected images are not uploaded to the developer’s servers for compression. The app uses Google AdMob for advertising, which may process information separately as described in the privacy policy.

Why do ads appear?

The app includes full-screen ads after some compression operations. Batch compression of 2–10 images triggers one ad display attempt after processing, provided at least one image succeeds. Single-image compression uses the stored compression-operation counter and triggers an ad when it reaches a multiple of three. Batches also count as one operation. Ads may not appear if they cannot be loaded.

I only see single-image selection. What should I do?

This guide describes version 1.1. Check your installed version and whether an update is available on the App Store.

05 / PRIVACY

Privacy

Read how image data, photo permissions and advertising information are handled in the existing privacy policy.

Image Compressor Privacy Policy (Japanese) →

06 / CONTACT

Contact

For bug reports, questions or feedback, email Moriki Engineering. Please include:

moriki.engineering@gmail.com

You do not need to attach personal photos to make an initial support request.