Sample HEIC 5MB File
HEIC — Apple's HEVC-based format
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Download 5MB HEIC5 MBTestFile-heic-5mb.heic
File details
| Format | HEIC |
| Extension | .heic |
| MIME type | image/heic |
| Size | 5 MB |
| Exact bytes | 5,242,880 |
| Filename | TestFile-heic-5mb.heic |
| Format version | HEIF / HEVC (HEIC brand) — ISO/IEC 23008-12 |
| Contents | ~6,000 × 4,500 px RGB synthetic gradient; HEVC compression; ISOBMFF container; no EXIF |
| Encoding | RGB 8-bit; HEVC (H.265) compression; CTU partitioning; CABAC entropy coding |
What is a 5MB HEIC file useful for?
A 5 MB HEIC is representative of a high-resolution iPhone photo at maximum quality setting, or a ProRAW DNG exported to HEIC. Use it to test HEIC transcoding performance at realistic file sizes (confirm transcoding completes in under 5 seconds for a responsive upload experience), to benchmark pillow-heif or libheif decode throughput, and to verify that your Apple Photos or iCloud integration correctly handles files in this size range. This is also the right size for testing HEIC-to-AVIF conversion pipelines.
What's inside this file?
Generated with Pillow and pillow-heif. Approximately 6,000 × 4,500 pixels encoded as HEVC in an ISOBMFF container. An equivalent JPEG would be approximately 8–12 MB. HEVC's intra-frame coding uses CTU (Coding Tree Unit) partitioning and CABAC entropy coding for substantially better compression than JPEG's fixed 8 × 8 DCT blocks at equivalent quality levels.
Download via curl
curl -L "http://localhost:8000/files/heic/TestFile-heic-5mb.heic" \ -o TestFile-heic-5mb.heic
Need different parameters?
Generate a custom HEIC file with exact settings.