How to Compress Images for Pinterest Pins on iPhone

Updated February 18, 2026 · 8 min read

You do not need an app to shrink photos on an iPhone. Pins are tall and browsed in dense grids, so file size adds up quickly across a board.

Recommended settings for Pinterest pins

SettingStarting point
FormatJPEG (WebP where accepted)
Widthabout 1000 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 1000 pixels, tap Compress, and save the result to Files or Photos. Everything stays on the phone, which matters for personal pictures used for Pinterest pins.

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 1000 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

  • Write a size limit slightly below the stated maximum to leave a margin.
  • Process private images locally rather than uploading them to unknown servers.
  • Crop out distractions so pixels go to the subject.
  • Use WebP where it is supported and you control the page.

FAQ

Is WebP accepted for e-learning courses?

It depends on the platform. JPEG is the safest choice when you are not sure.

What size should an image be for e-learning courses?

A practical default is about 1600 pixels wide and 200 KB or less, unless the destination states its own limits.

Can I compress images for e-learning courses without uploading them?

Yes. TheCompressJPEG runs entirely in your browser, so your images never leave your device.

Wrapping up

For Pinterest pins, the reliable recipe is simple: resize to around 1000 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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