Convert and merge multiple HEIC photos into one PDF — free, instant, entirely in your browser. No file uploads, no account, no watermark. Works on iPhone, Mac, Windows & Android.
HEIC → Merge to PDF
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HEIC stands for High Efficiency Image Container. It is the default photo format used by iPhones and iPads since iOS 11. Apple chose HEIC because it compresses photos to roughly half the file size of an equivalent JPEG while maintaining the same or higher visual quality. A photo that would be 5MB as a JPEG might be just 2.5MB as a HEIC file — which means your iPhone can store more photos without sacrificing image quality.
Despite its advantages, HEIC is not universally supported. Windows does not open HEIC files without a codec extension, most email clients cannot preview HEIC attachments, and many online platforms reject HEIC uploads. This is where converting HEIC to PDF becomes essential. A PDF is universally supported on every device and operating system — Windows, Mac, Linux, Android, iOS — without any additional software. PDFs are also the preferred format for sharing documents, submitting forms, sending photo collections, and archiving important images.
There are many real-world scenarios where merging multiple HEIC photos into one PDF is the right move. Here are the most common situations:
📄 ImageConverter24 is the best free tool to merge HEIC to PDF online. It runs 100% in your browser — your files are never uploaded to any server. Convert and merge as many HEIC photos as you need, in any order, with no watermark and no signup.
| Feature | HEIC | JPG | |
|---|---|---|---|
| Universal compatibility | Limited (Apple-first) | Very wide | Universal ✦ |
| File size efficiency | Excellent | Good | Depends on images |
| Merge multiple images | Not supported | Not supported | Yes — multi-page ✦ |
| Email / share | Problematic | Works well | Best option ✦ |
| Print-ready | Requires conversion | Requires conversion | Yes, natively ✦ |
| Best for sharing photos | Keep on iPhone only | Good for single images | Best for collections ✦ |
This guide walks you through the entire process, from preparing your HEIC photos on your iPhone to downloading the final merged PDF — including specific instructions for Windows, Mac, iPhone, and Android.
Before converting, decide which photos you want to include and in what order. The order you upload them determines the page order in the PDF, but you can also drag to reorder them in this tool after uploading. A few things to check before you start:
Click the upload area or drag your HEIC files directly into the drop zone. The tool accepts HEIC, HEIF, JPG, JPEG, and PNG formats. On iPhone in Safari, tapping the upload area will prompt you to choose from your camera roll. You can upload as many files as you need — there is no limit.
Once uploaded, you will see each file listed with a thumbnail preview, file name, and size. At this point, you can drag files up or down to change the page order in the final PDF. The numbered badge on each thumbnail shows its current page position.
Use the settings panel above the upload area to configure the output:
Click the Convert & Merge to PDF button. The tool will process each HEIC file in your browser — decoding the HEIC format and building the PDF page by page. A progress bar shows the conversion status. Once complete, click Download PDF to save the merged PDF file to your device.
💡 Pro tip: If you are on an iPhone and want to share the PDF directly to WhatsApp, Mail, or AirDrop — tap Download PDF, then tap the Share button in Safari's download manager to send it to any app immediately.
Open Safari on your iPhone and go to this page. Tap the upload area. iOS will show you options — choose "Photo Library" to pick from your camera roll, or "Browse" to select files from iCloud or your Files app. Select your HEIC photos, configure the settings, and tap Convert. When the download button appears, tap it and choose where to save the PDF (Files app, iCloud Drive, or share directly).
Open this tool in any browser on your Mac (Safari, Chrome, Firefox). Open a Finder window alongside your browser window and drag your HEIC files directly from Finder into the drop zone. Alternatively, use the native Mac method: open all HEIC files in Preview, use the sidebar to arrange their order, select all thumbnails with Command+A, then go to File → Print → Save as PDF. This tool is faster for merging many files.
Windows does not support HEIC files natively without the HEIC Image Extension from the Microsoft Store. However, this online tool requires no codec — it decodes HEIC directly in the browser. Open this tool in Chrome or Edge on Windows, upload your HEIC files, and download the merged PDF. The entire process takes under a minute and requires no software installation.
Android devices do not capture photos in HEIC format natively, but if you have HEIC files transferred from an iPhone (via AirDrop to Mac, then to Android via USB, or via Google Drive), open this tool in Chrome on your Android device, select the HEIC files, and download the PDF. The tool runs fully in the browser with no app required.
Converting HEIC to PDF is straightforward, but a few choices can significantly improve the quality of your final document. Here are the most important factors to consider.
If you are converting photos of documents, contracts, ID cards, receipts, or medical records, always use the High quality setting. At high quality, the image is embedded in the PDF at close to its original resolution — meaning text and fine details in the photo will remain readable in the PDF. At Medium or Low quality, text in photos may appear blurry or pixelated when zoomed in.
When creating a PDF photo album or collection where presentation matters, choose "Fit to image" as your page size. This setting makes each PDF page exactly the same dimensions as the photo, preserving its natural aspect ratio without white borders or cropping. The result is a cleaner, more professional-looking PDF for photo collections.
If you are submitting a PDF to a government office, employer, insurance company, or educational institution, use A4 (outside the US) or Letter (in the US) as your page size. These are standard document sizes that print correctly on standard paper. The tool will scale your photos to fit within the page dimensions while maintaining their aspect ratio.
The tool converts your photos as-is — it does not enhance or correct image quality. If a photo is blurry, underexposed, or poorly framed, it will appear that way in the PDF. Before uploading, review each photo and edit them in the iPhone Photos app or any photo editor to correct brightness, contrast, and sharpness. For document photos, make sure the entire document is in frame and the text is sharp and legible.
The page order in your PDF will match the order you upload or drag the files in the tool. For multi-page documents photographed with your iPhone (such as a multi-page contract or report), make sure your photos are numbered or named in sequence before uploading. On iPhone, photos taken in sequence will typically appear in chronological order when you select them from the camera roll.
⚠️ File size note: HEIC photos from a modern iPhone can be 2–5MB each. A merged PDF with 20 high-resolution iPhone photos at High quality can be 40–100MB. If you need a smaller PDF for email (which often has a 25MB attachment limit), use Medium or Low quality, or merge fewer photos per PDF.
Some browsers — particularly older versions of Chrome on Windows — may not recognize HEIC files when browsing. If this happens, try the following:
Many universities and colleges require assignment submissions in PDF format. Students who photograph handwritten notes, diagrams, or completed worksheets with their iPhones end up with HEIC files that the submission portal won't accept. This tool lets students merge those HEIC photos into a single PDF quickly, without installing any software.
Lawyers, accountants, consultants, and other professionals often photograph physical documents — signed contracts, receipts, invoices, or meeting notes — with their iPhones for digital record-keeping. Converting these HEIC photos to a single organized PDF is essential for document management systems and client file submissions.
Insurance companies and legal offices typically require damage photos, medical records, or supporting documentation in PDF format. If you photographed an accident scene, a damaged property, or medical paperwork with your iPhone, this tool converts those HEIC photos into a submission-ready PDF in seconds.
When applying for visas, residency permits, or banking services abroad, offices often require scanned documents in PDF format. Photographing your passport, utility bills, or bank statements with your iPhone and merging them into a PDF is the fastest way to create digital document packages for international submissions.
Sending clients a professional PDF invoice or quote package that includes photos of completed work is far more polished than attaching raw HEIC images. Freelancers who photograph their work — interior designers, contractors, photographers, artists — can use this tool to create clean client-ready PDF portfolios from iPhone photos.