You take a clear photo of your passport with your iPhone and go to upload it to a government portal, a job application system, or an insurance claim form. The site rejects it. "Invalid file format." The photo is saved as a .heic file — Apple's High Efficiency Image Format, the default for every iPhone and iPad running iOS 11 or later. Most non-Apple platforms have not added HEIC support and probably will not any time soon. Their upload systems expect JPG or PDF.
PDF is the fastest fix. It is universally accepted, viewable on every device, and does not require the recipient to have any Apple-specific software. This converter takes your HEIC files, decodes them using a browser-based HEIC library, and packages them into a clean PDF entirely on your device. Nothing is uploaded. Nothing is sent to any server. Your passport photo, your medical scan, your ID card image stays on your machine throughout the entire process.
How It Works
- Add your HEIC files — Drag and drop one or multiple HEIC images onto the upload area, or click to browse your device. A preview panel renders each HEIC immediately (converted to PNG for display) so you can confirm the images loaded correctly. The panel also shows total image count, average file size, and total pixel count before any conversion begins.
- Set order and PDF settings — Reorder images using the Move Up and Move Down buttons, or sort the full list by file name or file size. Choose a page size: Auto (fits each page to its image), A4, US Letter, or Legal. Set orientation to Auto, Portrait, or Landscape. Choose quality: High for maximum image fidelity, Medium as the default balanced option, or Low for the smallest output file. Toggle Fit Image to Page and Center Image on Page as needed.
- Convert and download — Click Convert HEIC to PDF. The browser-based HEIC decoder processes each file, renders the image data, and builds a multi-page PDF with one image per page in your specified order. Download the file immediately.
Compatibility & Support
Supported Input → Output Formats
- Input: HEIC and HEIF (High Efficiency Image File Format), the native format for iPhone and iPad photos taken on iOS 11 and later
- Output: Single PDF with one HEIC image per page
- Page sizes: Auto (fit to image), A4 (210 x 297 mm), US Letter (8.5 x 11 in), Legal (8.5 x 14 in)
- Quality settings: High (larger file, maximum sharpness), Medium (balanced), Low (smallest file)
Unsupported Formats
The tool accepts HEIC and HEIF input only. JPG, PNG, WebP, BMP, and GIF files cannot be processed here. For converting mixed-format image batches into a single PDF, use the Images to PDF (Multiple) tool instead, which supports all common image formats together in one batch.
File Size Limits
All processing runs offline in the browser using a built-in HEIC decoder, so no server-imposed file size cap applies. HEIC files from modern iPhones with 12 to 48 megapixel sensors can be large; the tool processes them fully on modern browsers. Very large batches may take a few extra seconds on older hardware.
Who Should Use This Tool?
- Students: A student submitting scanned assignment pages or printed handouts photographed with their iPhone can combine multiple HEIC shots into a single paginated PDF for upload to a course portal that only accepts PDF submissions.
- Freelancers & Designers: A freelancer who photographs signed contracts or receipts with their iPhone can convert those HEIC images into a single PDF for their accounting software or client invoicing system, both of which typically reject HEIC outright.
- Office Professionals: An HR administrator onboarding a new employee who has submitted their ID documents as HEIC phone photos can convert them to a single PDF for the company's document management system without routing personal identity photos through any cloud service.
- Developers: A developer building a document intake flow can use this tool to quickly generate test PDF files from HEIC source images, verifying page sizing and image quality behavior before implementing HEIC decoding in a server-side pipeline.
Key Features
Here's what separates this tool from generic alternatives:
100% Offline Processing
A browser-based HEIC decoder handles all conversion locally. Passport photos, medical images, and ID documents never leave your device or transfer to any external server.
Native HEIC Support
Built-in HEIC decoder processes Apple's native format directly without requiring any Windows codec, third-party plugin, or pre-conversion step. Works on Windows, Mac, and Android browsers where HEIC support is otherwise absent.
Reorder Before Converting
Move images up or down individually or sort by name or size. Getting page order right before conversion matters for multi-document batches like receipts, multi-page forms, or sequential reference photos.
Auto or Standard Page Sizes
Auto sizing fits each page exactly to its image. A4, Letter, and Legal give standard paper dimensions for official submissions. Portrait and Landscape orientation controls handle both phone and wide-format shots.
Preview Before Converting
Each HEIC decodes and previews as a PNG thumbnail immediately after upload. Confirm every image loaded correctly and check the order before generating the PDF, avoiding wasted conversion passes.
Image Stats Panel
The info panel shows average file size and total pixel count across the batch before conversion. Useful for estimating output PDF size and deciding whether to use High or Medium quality.
Why This Tool Beats the Alternatives
- No account, email, or signup required at any point.
- No watermarks added to the output PDF.
- No server upload; personal ID photos and medical images stay on your device throughout.
- Built-in HEIC decoder works on Windows and Android browsers where HEIC is not natively supported.
- Reorder controls and page size options in a single tool; most basic HEIC converters produce fixed output with no layout customization.
- No daily conversion limits or paid tier required for batch processing.
Pro Tips
- For government form submissions, ID verification portals, and visa applications, always select High Quality. These systems often zoom into images to verify microprint, watermarks, and document text. Medium quality compression at high zoom produces noticeable blurriness on fine detail.
- If the resulting PDF is too large to email or upload to a file size-restricted portal, run the output through the Compress PDF tool after conversion. A High Quality HEIC batch can be reduced significantly without visible quality loss at normal viewing sizes.
- Sort by name before converting if your HEIC files are timestamped or sequentially numbered (IMG_0031.heic, IMG_0032.heic, etc.). One click puts them in the correct chronological order, which matters for sequential document photos like multi-page receipts or scanned form pages.
Add your HEIC files, set the page size and quality, check the preview, and download the PDF in seconds. For converting mixed batches of JPG, PNG, and other formats alongside HEIC, the Images to PDF (Multiple) tool handles all formats together in one conversion.