VERIFIED GUIDE

Reduce Image Size on iPhone

Use Safari to convert HEIC, limit the longest side, and meet a hard KB target locally.

Use the 1920px mobile preset

Direct answer

Start with the portal's accepted format and limit. If the photo is HEIC, convert to JPEG; then set 1920 or 2048px longest side and the exact KB cap.

REPRODUCIBLE SAMPLE

This guide's before-and-after files

Before: high-resolution mobile-photo test input
Before: high-resolution mobile-photo test input
5024×3328 · 1003.57KB · download file
After: longest side capped at 1920px and below 500KB
After: longest side capped at 1920px and below 500KB
1920×1272 · 371.64KB · download file
Observed result

Output measures 371.64KB and decodes successfully.

The source is auto-oriented, resized to a 1920px longest side, encoded, measured, and decoded.

Validation date: 2026-07-18. Both files are downloadable; dimensions, byte counts, decodability, and distinct SHA-256 hashes are checked by the repository test suite.

Use the verified workflow

  1. Open the workflow in a current Safari browser.
  2. Choose the photo and select the portal's target.
  3. Keep the tab active until verification finishes, then save the result.

Limits and failure cases

  • Large photos need significant memory during local decoding.
  • V1.0 is not an offline-installed PWA; keep the page connection available.

Official sources and verification

Tool behavior and samples were checked on 2026-07-18. External references:

Related next step

Return to Successful image uploads or use the 1920px mobile preset.

Common question

Does PixCloak upload the source image?

No. The editing pipeline uses browser File, Canvas, and Blob APIs on this device. Optional analytics and advertising are separate and load only after the applicable consent choice; product events never include image bytes or filenames.