PDF vs Images for Sharing Documents (JPG, PNG, HEIC)
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A surprising amount of business and school work gets sent as image files — JPGs of contracts, HEIC photos of handouts, PNG screenshots of receipts. It feels quicker than producing a PDF, the phone makes it easy, and the recipient can usually still read it. But images of documents are the wrong format for almost every actual document workflow.
PDFs and document images serve different purposes. PDFs are multi-page, searchable, printable, signable, archivable, and don't break on rotation. Images are single-page, not searchable, often huge in file size, and frequently come out blurry, sideways or with the wrong color. For anything beyond a single quick share, PDFs do the job better.
This guide walks why, when the image-of-document approach actually works (it does, sometimes), and the simple conversion path when you want the PDF version.
Step by step
- 1
Recognize when an image of a document is wrong
Multi-page document: wrong format. Document that needs to be printed: wrong format. Document that needs to be searchable: wrong format. Anything formal that will go in a file: wrong format.
- 2
Recognize the small set of cases where an image is fine
Single-page, ephemeral, casual. Quick photo of a receipt to a friend, screenshot of a confirmation page, snapshot of a handwritten note to yourself. The image is the right format when it's not really a document yet.
- 3
Convert with Image to PDF when the share becomes a document
Image to PDF combines JPG, PNG and WebP into a PDF in your browser. The image becomes searchable later if OCR'd; it stays as one file rather than many.
- 4
Use the right tool for the source
Photos → Image to PDF. Scanned pages → Scan to PDF. Word/Pages document → Word to PDF. Each source format has the cleanest conversion route.
- 5
Handle iPhone HEIC specifically
iPhone defaults to HEIC, which not every recipient can open. Convert HEIC → JPG → PDF, or use a tool that handles HEIC directly. The PDF Editor app's scan flow handles HEIC natively.
- 6
Compress thoughtfully
Compress PDF if the resulting file is huge. Photo-to-PDF conversions inherit the photo's resolution, which is often more than needed for a document.
Tips
- JPG of a portrait document on a phone is the wrong format. Rotate the phone or use a scan app — the result is dramatically more readable.
- PNG screenshots can convert to PDF cleanly but JPG photos of paper documents are usually better off going through a scan app for edge detection.
- Don't send multiple JPGs as a multi-page document. Combine them into one PDF; recipients lose track of multi-attachment threads.
- HEIC is iOS-default but rejected by many web portals and email clients. Convert before sharing if you don't know the recipient's setup.
- Photos of laptop screens are the worst case — moire, glare, low resolution. Use the export PDF feature instead of photographing the screen.
Try it on your phone
Phones are where image-of-document mistakes happen most. The PDF Editor app's scan flow detects pages and produces clean PDFs from the start, so a quick share becomes a proper document without an extra conversion step.
