Format Selection Rule
- JPG: best universal compatibility.
- WebP: strong web size/performance balance.
- PNG: use when transparency is needed.
- AVIF: best compression potential where support is acceptable.
HEIC Compatibility Fix
HEIC Not Opening?
HEIC saves space on iPhones, but many platforms still reject it. Use this guide to diagnose failures and convert cleanly for any destination.
Most compatible output:
JPG
Best web-performance output in many cases: WebP
Where HEIC Commonly Fails
| Context | Typical Error | Fix |
|---|---|---|
| CMS upload | Unsupported file type | Convert HEIC to JPG/WebP before upload. |
| Browser preview | Blank preview / no render | Use PNG/JPG/WebP output for preview compatibility. |
| Email/share workflows | Recipient cannot open file | Send JPG fallback for maximum device support. |
| Automation pipelines | Decode/codec failure | Normalize to standard web formats pre-ingestion. |
Quality-Safe Conversion Steps
- Convert from original HEIC source, not previously compressed output.
- Keep dimensions unchanged unless resizing is intentional.
- Review output visually at 100% zoom.
- Strip metadata if privacy is required before publishing.
Frequently Asked Questions
-
JPG is the safest universal fallback across browsers, apps, and uploads.
-
Lossy outputs can reduce quality. Use sensible quality settings and avoid repeated re-exports.
-
Yes, but validate output format and quality on a few samples before large batches.
-
If files will be shared publicly, metadata cleanup is strongly recommended.
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