HEIC vs PDF
A detailed comparison of HEIC Image and PDF Document — file size, quality, compatibility, and which format to choose for your workflow.
HEIC Image
Raster & Vector ImagesHEIC is the default photo format on Apple devices since iOS 11. It offers roughly 50% better compression than JPEG at similar quality but has limited support outside the Apple ecosystem.
About HEIC filesPDF Document
Documents & TextPDF is the universal standard for sharing documents with consistent formatting across all devices and operating systems. It preserves fonts, images, and layout exactly as intended by the author.
About PDF filesStrengths Comparison
HEIC Strengths
- Roughly 50% smaller than JPEG at equivalent visual quality.
- 10- and 12-bit color depth supports HDR photography.
- Container format holds depth, Live Photo, bursts, and thumbnails in one file.
- Supports transparency and multi-image sequences.
- Built into iOS, macOS, and most modern Samsung and Google flagships.
PDF Strengths
- Pixel-perfect fidelity across operating systems, browsers, and printers.
- Embeds fonts, so documents render identically without the reader having them installed.
- Supports digital signatures, encryption, and redaction for legal workflows.
- ISO-standardized (ISO 32000) with multiple validated subsets (PDF/A, PDF/X, PDF/UA).
- Supports both vector and raster content, keeping line art crisp at any zoom level.
Limitations
HEIC Limitations
- Patent-encumbered (HEVC) — Windows users must buy a $0.99 codec pack from the Microsoft Store.
- Not supported by most web browsers or older image editors.
- Sharing to non-Apple platforms usually auto-converts to JPEG, losing metadata.
- Hardware decoding required for smooth performance; software decoding is CPU-heavy.
PDF Limitations
- Editing is difficult — the format is optimized for display, not mutation.
- Text extraction can scramble reading order in multi-column layouts.
- File sizes balloon quickly when embedding high-resolution images or fonts.
- Accessibility (screen readers) requires careful tagging that many PDFs skip.
- JavaScript support has historically been a malware vector.
Technical Specifications
| Specification | HEIC | |
|---|---|---|
| MIME type | image/heic | application/pdf |
| Compression | HEVC (H.265) intra-frame | Flate, LZW, JBIG2, JPEG, JPEG 2000 |
| Color depth | 8, 10, or 12 bits per channel | — |
| Container | HEIF (ISO/IEC 23008-12) | — |
| Transparency | Supported | — |
| Max dimensions | 8,192 × 4,320 (practical) | — |
| Current version | — | PDF 2.0 (ISO 32000-2:2020) |
| Max file size | — | ~10 GB (practical); 2^31 bytes (theoretical per object) |
| Color models | — | RGB, CMYK, Grayscale, Lab, DeviceN, ICC-based |
| Standard subsets | — | PDF/A, PDF/X, PDF/UA, PDF/E, PDF/VT |
Typical File Sizes
HEIC
- iPhone photo (12 MP) 1.5–3 MB (half of JPEG)
- Live Photo with 3s video 3–6 MB
- Portrait mode with depth map 2–4 MB
- 1-page text-only memo 50–150 KB
- 10-page report with images 500 KB – 2 MB
- Scanned document (per page) 100 KB – 1 MB
- Full-color magazine (48 pages) 10–40 MB
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Convert between HEIC and PDF online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
HEIC (High Efficiency Image Container) is the default photo format on iPhones since iOS 11, based on the HEVC video codec. It offers roughly 50% smaller files than JPEG while maintaining superior image quality and supporting depth maps and Live Photos.
PDF (Portable Document Format) was created by Adobe in 1993 to present documents consistently across all devices and operating systems. It preserves fonts, images, layouts, and formatting regardless of the software used to view it.
HEIC files open natively on Apple devices, Windows 10/11 (with the HEIF extension from the Microsoft Store), and modern versions of GIMP and Photoshop. Google Photos also supports HEIC viewing and conversion.
PDF files can be opened with Adobe Acrobat Reader (free), web browsers like Chrome and Edge, macOS Preview, and alternative readers like Foxit and Sumatra PDF.
HEIC is superior in quality and file size but has limited support on non-Apple platforms. Use HEIC on Apple devices for storage efficiency. Convert to JPG when sharing with Windows users, uploading to websites, or printing.
Use PDF for final documents meant to be viewed or printed without changes. Use DOCX when the document needs to be edited collaboratively. PDF preserves exact layout while DOCX allows flexible editing.