CONVERT
HEIC → PDF
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Fast, secure HEIC to PDF conversion. No registration required.
HEIC is Apple's container for photos captured on iPhone and iPad since iOS 11. It wraps one or more images encoded in HEVC (H.265), a codec built for high compression at low visual loss. The problem is that HEVC decoding is locked behind Apple's hardware and OS stack: Windows without a paid Microsoft codec pack, most Linux distros, and a large share of web browsers cannot render HEIC at all. PDF solves a different problem — it is a fixed-layout document format with near-universal rendering support, natively embedded in every major OS and printable without rasterization artifacts. People convert HEIC to PDF when they need to attach a photo to a form, submit documentation through a portal that refuses HEIC, share an image with someone on Windows or Android, or print through a workflow that expects PDF input. The conversion is also common when archiving a batch of iPhone photos as a single multi-page document, since PDF supports multi-image assemblies in a way HEIC does not expose to generic tools.
HEIC Image
Source formatHEIC 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.
PDF Document
Target formatPDF 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.
Why convert HEIC to PDF
HEIC has no meaningful support outside Apple ecosystems. Windows 10 and 11 require purchasing the HEVC Video Extensions from the Microsoft Store to decode it natively; without that, Explorer shows a blank thumbnail and email clients, browsers, and most productivity apps cannot open the file. Android does not decode HEIC by default. PDF avoids all of this: every OS ships a PDF renderer, every printer driver accepts PDF, and document portals universally accept it. The conversion is also the standard path when a government form, healthcare intake system, or legal portal explicitly requires a PDF attachment of a photo ID or signed document.
HOW TO CONVERT
HEIC → PDF
Start the job
Upload HEIC; the pipeline reads pixel dimensions, colour profile and orientation.
Layout the page
The image is centred or stretched to the configured page size (A4 by default); DPI is preserved for print fidelity.
Save the result
Download the PDF — or preview it in the browser before saving.
Common Use Cases
Share across platforms
Send PDF files to anyone without worrying about whether they have the right software for HEIC.
Embed in documents
Drop PDF output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
PDF often produces smaller files than HEIC for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
HEIC vs PDF — Strengths and limitations
What each format does best, and where it falls short.
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.
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.
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
- 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.
HEIC vs PDF — Technical specifications
Side-by-side comparison of the technical details.
HEIC
- MIME type
- image/heic
- Compression
- HEVC (H.265) intra-frame
- Color depth
- 8, 10, or 12 bits per channel
- Container
- HEIF (ISO/IEC 23008-12)
- Transparency
- Supported
- Max dimensions
- 8,192 × 4,320 (practical)
- MIME type
- application/pdf
- Compression
- Flate, LZW, JBIG2, JPEG, JPEG 2000
- 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
| 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 |
HEIC vs PDF — Typical file sizes
Approximate file sizes for common scenarios.
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
Quality & Compatibility
HEIC stores a 10-bit HEVC-encoded image with the BT.2020 wide color gamut or Display P3, depending on the capture device. Conversion to PDF embeds a rasterized JPEG or lossless image at 8-bit sRGB or the device color profile, which means the 10-bit depth is truncated and any HDR highlight detail captured in the original is clipped or tone-mapped. The EXIF metadata block — GPS coordinates, capture timestamp, device model, lens focal length — is preserved in the embedded image if the PDF producer carries the XMP/EXIF payload inside the image stream, but it is no longer accessible as a photo-library field. Alpha channel transparency is not relevant here: HEIC photos from the camera do not carry an alpha layer. The resulting PDF is a single-page raster document, not a vector, so zooming past 100% will show pixelation at the original image resolution.
Tips for Best Results
- If the source HEIC was shot in Portrait mode on an iPhone, the depth map and segmentation mask are stored as auxiliary image items inside the HEIC container. The converter processes only the primary image item, not the depth layer, so the output PDF will not carry depth information — this is expected behavior, not a conversion error.
- HEIC files from iOS can embed an embedded thumbnail at a lower resolution alongside the full-resolution frame. To get the full-resolution result in your PDF, make sure the source file is the original and not a compressed export from iCloud Photos that already downscaled the image.
- If you are converting a Live Photo, the motion data (the short .MOV clip paired with the .HEIC) is a separate file and will not be included in the PDF. Only the still frame is converted. If you need the video component, keep the original pair.
Frequently Asked Questions
Yes. The free tier accepts files up to 25 MB without registration, email capture or watermarks; paid plans go up to 2 GB. Paid plans raise the size cap, enable batch conversions and provide a REST API for automation, but nothing on the free tier is quality-limited — the output is exactly the same as on any paid plan.
Minimally. When the image encoding carries directly into the PDF (JPEG into PDF for example), pixels are stream-copied and quality is bit-exact. When re-encoding is required, we use high-quality defaults that are visually indistinguishable from the source on typical viewing conditions.
Uploads run over HTTPS, files are processed in isolated containers, and both the source HEIC and the PDF output are auto-deleted within two hours. No account is required, file contents are never logged, and KaijuConverter does not use uploads for AI training. The paid plan adds a signable data-processing agreement for regulated workflows.
Yes. Upload multiple images (or a ZIP) and the pipeline produces a multi-page PDF with one image per page, ordered by filename. Advanced options control page size, orientation per page and whether captions are inserted.
Most files finish in well under a minute. Small images and documents are typically ready in a few seconds; large video or audio files scale roughly with duration. Upload speed from your network is usually the dominant factor, not server time.
A4 portrait by default — the global mainstream. Switch to Letter or any custom dimensions in Advanced. You can also select "match image" so the PDF page size tracks the HEIC aspect ratio exactly, eliminating white margins for custom printing.
Related comparisons
See these formats side by side to understand which fits your use case best.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.