Quick answer
WordPress does not accept HEIC file uploads. Convert HEIC to JPG using HEIC to JPG Converter, then upload the JPG to your WordPress media library.
You try to upload an iPhone photo (HEIC) to your WordPress blog post. WordPress media uploader rejects the file type. HEIC is not in the approved formats list for WordPress installations.
heicconvert.site · HEIC to JPG Converter
Drop HEIC files here
or click to choose . up to 200 at once
HEIC
IMG_4827.HEIC
Done . 0.9s
HEIC
IMG_4828.HEIC
Done . 1.1s
HEIC
IMG_4829.HEIC
82%
3 of 28 converted
0 uploaded
WordPress supported image formats
Accepted: JPG (industry standard), PNG, GIF, WebP (WordPress 5.8+). Not accepted: HEIC, TIFF, BMP, AVIF.
Why WordPress rejects HEIC
Three reasons: MIME type not registered by default, codec licensing cost, HEIC adoption under 20%. Easy fix: convert to JPG before uploading.
30-second fix: convert HEIC to JPG
- Use HEIC to JPG Converter or Cloudconvert.
- Drag HEIC image, click Convert, download JPG.
- In WordPress, click Add Media.
- Upload JPG file.
- Attach to post. Done.
WordPress image optimization tips
- Quality: Convert to JPG at 80-85% (WordPress may re-compress).
- Size: 1200x800 pixels ideal for featured images.
- Thumbnails: WordPress auto-generates from full image.
- SEO: Add alt text and descriptive filename.
At-a-glance comparison
| Format | WordPress default | JPG | PNG | HEIC |
|---|---|---|---|---|
| Accepted | Yes (many) | Yes | Yes | No (unless custom) |
| Recommended | N/A | Photos | Transparency | Not supported |
| File size | 150-500 KB | 150-300 KB | 300-500 KB | N/A |
Frequently asked questions
Can I enable HEIC uploads on my WordPress site?
Yes, with custom server config (add MIME type, install codec). Not recommended for shared hosting.
Does WordPress compress JPGs after upload?
Yes. WordPress applies default compression (usually 82-88%). Start with 85-90% JPG.
Should I use JPG or PNG for WordPress blog images?
JPG for photos (smaller), PNG for screenshots or graphics with transparency.
Can I batch upload after converting?
Yes. Convert all HEIC to JPG, then drag multiple JPGs into WordPress media uploader.
What is the best image size for WordPress blog posts?
1200x800 pixels for featured images, 800x600 for in-post. WordPress resizes on display.
