HEIC to PDF
Convert iPhone HEIC and HEIF photos into a single PDF document. Files are processed in your browser, EXIF and GPS metadata are stripped, and the result opens on Windows, Android, and any other device that can't read HEIC natively.
HEIC to PDF converts the High Efficiency Image format that iPhones have used by default since iOS 11 (2017) into a single PDF document. The conversion runs entirely in your browser using heic2any (a libheif WebAssembly port) and pdf-lib. EXIF metadata and GPS coordinates from your phone photos are automatically stripped. The resulting PDF opens on Windows, Android, and email clients that don't speak HEIC natively.
What is HEIC to PDF?
HEIC (High Efficiency Image Coding) is a still-image container that uses the same HEVC compression as 4K video. Apple made it the default capture format on iPhones starting with iOS 11 in 2017, replacing the JPEGs that older iPhones produced. HEIC files are typically 30-50% smaller than equivalent JPEGs at the same visual quality, which is why your phone's storage lasts longer than it used to. The trade-off is compatibility — most non-Apple software, including Windows Photo Viewer until Windows 11, doesn't open HEIC without extra codec packs.
Converting HEIC to PDF is the most reliable way to share an iPhone photo with anyone who isn't on Apple hardware. PDFs open identically on every device, and unlike emailing the original HEIC, the recipient doesn't need to install anything. Most online HEIC converters upload your photos to a remote server first — which is awkward when those photos contain location data, dates, and the model of phone you carry. This tool runs the conversion entirely in your browser; the photos never cross the network.
How does the in-browser HEIC conversion work?
Pikowl loads each HEIC into a Web Worker — a background thread inside your browser. The worker uses heic2any, a libheif WebAssembly build, to decode the HEVC-compressed image data into a JPEG blob. That blob is then drawn onto an OffscreenCanvas and re-encoded as a clean JPEG at quality 0.92, which strips the EXIF, GPS, and timestamp metadata that iPhone embedded. The cleaned JPEG bytes are written into a new PDF using pdf-lib. The finished PDF is offered as a downloadable Blob via URL.createObjectURL. Nothing is sent to any server.
Is it safe to convert HEIC photos here?
Yes. Open the network tab in DevTools while you use the tool — you will see the heic2any wasm chunk download once on first use, and zero outbound requests after that. Photos are read locally via the File API, decoded inside a sandboxed Web Worker, and the resulting PDF lives only in your browser's memory until you download it. Closing the tab discards everything. The same is not true of upload-based services where files are sent to a third-party server.
What metadata gets stripped from HEIC?
iPhone HEIC files inherit the same EXIF block found in iPhone JPEGs: GPS latitude, longitude and altitude (often accurate to within a few metres), the exact capture timestamp, the iPhone model (iPhone 14 Pro Max, etc.), the iOS version, and a small embedded thumbnail. They can also carry depth maps from Portrait Mode and a smaller HEIF auxiliary image used as a preview. Because Pikowl decodes each HEIC and re-encodes it via canvas, none of those tags survive in the output. If you need the original metadata for forensic or archival reasons, keep the source files; the PDF is the privacy-cleaned version.
What are the limits and why?
Up to 30 HEICs per conversion, 25 MB per file, with a soft warning at 100 MB combined and a hard cap at 150 MB. HEIC decoding is heavier than JPEG — heic2any has to invoke a WebAssembly HEVC decoder for each image, which produces a full RGBA bitmap (5-10× the source file size) before re-encoding. Mobile Safari can crash above ~200 MB of working memory. For larger batches, convert in two passes and merge with our Merge PDF tool.
How does Pikowl compare to Smallpdf and iLovePDF for HEIC?
The substantive differences are processing location, EXIF handling, daily-use limits, and pricing. Numbers below reflect the public free-tier offers from each service as of April 2026.
| Feature | Pikowl | Smallpdf | iLovePDF |
|---|---|---|---|
| Where files are processed | Your browser | Remote server | Remote server |
| Sign-up required | No | Optional | Optional |
| EXIF / GPS handling | Stripped automatically | Preserved | Preserved |
| Max file size (free) | 25 MB | 5 MB | 200 MB (combined) |
| Price | Free | $9/mo for unlimited | $7/mo for premium |
Sources: smallpdf.com/pricing and ilovepdf.com/pricing, retrieved April 2026.
Common Uses
- Sharing iPhone photos with Windows users: Windows Photos can't open HEIC unless the user installs the HEIF Image Extension; PDF works everywhere.
- Email attachments to non-Apple recipients: Many email clients fail to render HEIC inline; converting to PDF makes the photo visible in the preview pane.
- Insurance and warranty claims: Bundle iPhone photos of damage into one PDF for the adjuster, with GPS stripped to protect your home address.
- Visa and document submissions: Most government portals accept PDF only and reject HEIC; converting lets you submit your iPhone photo directly.
- Family photo collections: Compile a HEIC photo set into a shareable PDF gift; relatives on Android or older devices can open it.
- Archiving before iOS updates: Convert HEIC archives to a universal PDF before a major iOS migration, so the photos remain readable independently of Apple's format.
FAQ
Why does my iPhone use HEIC instead of JPEG?
Apple switched the default iPhone capture format from JPEG to HEIC in iOS 11 (2017) because HEIC files are roughly 30-50% smaller at the same visual quality. The savings come from HEVC compression — the same codec used for 4K video — which is far more efficient than JPEG's older DCT-based compression. You can switch back to JPEG capture in Settings → Camera → Formats → Most Compatible if compatibility matters more than storage.
What's the difference between HEIC and HEIF?
HEIF (High Efficiency Image File Format) is the container; HEIC is the most common variant of HEIF, using HEVC compression. You'll also see .heif extensions occasionally — they're functionally interchangeable for our purposes. This tool accepts both .heic and .heif. AV1-encoded HEIF (.avif's cousin) isn't covered here; that has its own future tool.
Can Windows open HEIC files directly?
Windows 11 can open HEIC out of the box. Windows 10 needs the HEIF Image Extension (free) plus the HEVC Video Extension (paid) from the Microsoft Store. That gap is why so many people convert iPhone HEICs to PDF or JPEG before sending — it removes the codec installation barrier entirely.
Will image quality be reduced?
Slightly. heic2any decodes the HEIC to a JPEG blob (slight quality loss vs. lossless decode), and we then re-encode that JPEG at quality 0.92 before embedding in the PDF (further small loss). For phone photos this is visually indistinguishable from the source, but for graphics with sharp edges or solid colors the lossy chain adds visible artifacts. PNG-format sources processed via PNG to PDF stay lossless; if you need lossless HEIC decoding, that requires native decoders we can't ship in a browser.
Why is HEIC conversion slower than JPG to PDF?
HEIC requires running a WebAssembly HEVC decoder for every image — that's a 500 KB+ wasm module loaded once on first interaction, plus per-image decoding that can take 100-500 ms depending on resolution. JPEG decoding is built into the browser and runs in microseconds. The tradeoff is worth it because HEIC support otherwise requires server-side processing.
Does this work for HEIC saved from Android phones or other apps?
Yes. heic2any decodes any HEIC/HEIF file regardless of producer — Samsung's HEIF, Adobe Lightroom HEIC exports, dedicated camera HEIC files all work. The format is an open ISO standard (ISO/IEC 23008-12); Apple isn't the only producer, just the most prolific.
Why HEIC-only? I have JPGs from the same shoot.
Each image-to-PDF tool restricts to one format so the conversion path is right for that format and the SEO content is honest. HEIC needs the wasm decoder; JPG/PNG/WebP each have their own optimised paths. For a mixed batch, convert each format separately and combine the resulting PDFs with our Merge PDF tool.
By the Numbers
- Apple introduced HEIC as the default iPhone capture format in iOS 11 (2017); every iPhone shipped since the iPhone 7 produces HEIC unless the user explicitly switches to "Most Compatible" in Camera settings.
- HEIC files are typically 30-50% smaller than equivalent JPEGs at the same visual quality, thanks to HEVC compression — the same codec used for 4K video streaming (Apple WWDC 2017).
- libheif, the open-source decoder behind heic2any, supports the full ISO/IEC 23008-12 specification including image grids, depth maps, alpha channels, and HDR — but for PDF output we use the simpler decoded-bitmap path.