Batch Convert HEIC to PNG Without Losing Quality (Free)

Converting one HEIC photo is easy. Converting 200 of them — without losing quality, without watermarks, and without uploading your entire camera roll to a stranger's server — needs a bit more care.

Why PNG and not JPG?

For photos, JPG is smaller. But PNG is the right choice when you need:

• Lossless quality — every conversion keeps pixel-perfect data, so you can edit and re-export later without degradation.
• Sharp edges — screenshots, scanned documents, graphics with text.
• Transparency — JPG can't do it at all.

Step 0: Prep the batch (saves you from redoing it)

1. Dedupe first. iPhone photo libraries accumulate near-duplicates — burst shots, Live Photos, "I took it twice just in case." Converting 200 files when you need 90 wastes time and produces a mess of PNGs.
2. Sort into folders by purpose. contracts/, receipts/, screenshots/ — you'll thank yourself when naming outputs.
3. Rename the HEICs if the names are useless. IMG_8471.heic tells you nothing; invoice-acme-mar.heic does. Rename before conversion so the output files inherit sensible names.

The batch workflow

1. Transfer the files. If they're still on your iPhone, use a cable or iCloud Drive to get them onto a computer — the browser step below works on desktop and mobile, but a big screen helps with 200 files.
2. Convert locally in the browser. Drop the folder into a browser-based converter that processes files on-device. FileOnTap does this — a free tool to batch convert HEIC to PNG without losing quality, with no account and nothing uploaded.
3. Check before you delete. Spot-check 3–5 output files: correct orientation, full resolution, color looks right. Then archive the originals somewhere (external drive, cloud backup) before deleting — don't trust a conversion you haven't verified.

Spot-check checklist

• One portrait-mode photo renders right-side up
• One screenshot's text is crisp, not blurred
• File count matches (200 in → 200 out)
• A random file opens in the app you'll actually use (Photoshop, the office PDF tool, the CMS uploader)
• Color looks right — no weird tint shift, which signals a broken color-profile conversion

Quality pitfalls to avoid

• Don't convert HEIC → JPG → PNG. Each lossy step throws away detail. Convert HEIC directly to PNG in one pass.
• Watch the rotation metadata. Phone photos carry EXIF orientation; a bad converter bakes in sideways images. Check a portrait-mode photo in your spot check.
• File size is normal. A 2 MB HEIC can become a 15–25 MB PNG. That's not a bug — it's lossless. If size matters later, compress the PNGs separately rather than sacrificing the archive copy.
• Don't batch-convert through a chat app. Sending HEICs to yourself via WhatsApp or Telegram "to convert later" silently re-compresses them first. Transfer the originals.

When to stop converting and just store

If these are personal photos you'll only ever view on Apple devices, keeping HEIC is fine — it's genuinely the most efficient format. Convert when something needs to open the files: a Windows editor, a print shop, a website CMS. The conversion doesn't have to happen the day you shoot.

Disclosure: I'm the developer of FileOnTap.