Question 1

What is a HEIC file?

Accepted Answer

HEIC (High Efficiency Image Container) is the default photo format on iPhones running iOS 11 and later. It offers better compression than JPEG at similar quality, but isn't supported everywhere. Converting to PDF makes sharing universal.

Question 2

Can I convert multiple HEIC files at once?

Accepted Answer

Yes. Drop up to 20 HEIC files and they will all be combined into a single PDF in the order you arrange them.

Question 3

Does the quality slider affect image sharpness?

Accepted Answer

Yes. Higher values (85–100%) preserve more detail. For photos with fine text or complex details, keep it above 80%. For casual photos, 70–75% is usually sufficient.

Question 4

What page size should I choose?

Accepted Answer

Auto sets each page to match the photo's exact dimensions. A4 and Letter fit photos into standard paper sizes, adding white margins if needed. Use A4 or Letter for printable documents.

Question 5

Are my photos uploaded anywhere?

Accepted Answer

No. All conversion happens in your browser using WebAssembly. Your photos never leave your device.

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