How to Compress Images for School Assignments on iPhone

Updated May 8, 2026 · 7 min read

You do not need an app to shrink photos on an iPhone. Learning platforms can have upload caps, and smaller files are easier to submit from a phone or a slow home connection.

Recommended settings for school assignments

SettingStarting point
FormatJPEG (WebP where accepted)
Widthabout 1600 px on the long edge
Quality78
File size300 KB or less

These are practical defaults. If the platform or form you are using publishes its own limits, follow those instead.

How to Compress Images

Open Safari, visit TheCompressJPEG and tap the file picker. Choose photos from your library; iOS will hand them over as JPEG even if they were shot in HEIC.

Set the target to 300 KB or a maximum width of 1600 pixels, tap Compress, and save the result to Files or Photos. Everything stays on the phone, which matters for personal pictures used for school assignments.

Step by step with TheCompressJPEG

  1. Open the compress JPEG to 300 KB tool, or the main compressor for custom settings.
  2. Drop in your image. Nothing is uploaded; it is processed in your browser.
  3. Set the maximum width to 1600 and the target size to 300 KB.
  4. Press Compress, check the result and download it.
Ready to try it? Compress your JPEG to 300 KB now. It's free and private.

Quick tips

  • Check the result on a phone, where most people will see it.
  • Use consistent dimensions for a set of related images.
  • Resize before you compress; it improves quality at any file size.
  • Write a size limit slightly below the stated maximum to leave a margin.

FAQ

What JPEG quality should I use for e-learning courses?

Quality around 78 keeps photos looking natural while cutting file size substantially.

Will compressing reduce image quality for e-learning courses?

Some detail is removed, but at sensible settings the difference is not visible at normal viewing size.

How do I compress many images for e-learning courses at once?

Drop all of them into the tool together and use Download all to get a single ZIP.

Wrapping up

For school assignments, the reliable recipe is simple: resize to around 1600 pixels, compress at quality 78 or to a 300 KB target, and check the result before you upload. Keep the original so you can always start again.

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