How to Batch Convert Images Between Formats

You have 200 iPhone photos in HEIC format. You need them all as JPEG for a photo book. Or 50 PNG screenshots that need to become WebP for your website. Or a folder of mixed formats that should all be AVIF.

Converting one image at a time is painful. Batch conversion fixes that.

What Batch Conversion Does

Batch conversion applies the same settings to every image in a set:

Input: multiple files (or a folder)
Output format: JPEG, PNG, WebP, AVIF, etc.
Quality: same level for all (e.g., 85%)
Output: individual files or a single ZIP download

One operation, consistent results.

Common Batch Scenarios

iPhone photos to JPEG

Export an entire camera roll or album. HEIC → JPEG for Windows, printing, or sharing with non-Apple users.

Screenshots to WebP

Developers and designers often have folders of PNG screenshots. Batch convert to WebP for documentation sites — smaller files, same quality.

Mixed formats to one format

A project folder with JPG, PNG, and WebP scattered around. Batch convert everything to a single format for consistency.

Prepare images for a website

Convert to WebP or AVIF, set quality to 80, resize to max 1200px — all in one workflow.

Settings That Matter

Output format — match your destination (email = JPEG, web = WebP/AVIF)
Quality — 80–85 for photos, 90+ if you need near-lossless
Dimensions — resize during conversion to avoid a second step
Naming — some tools preserve original names with new extensions

ZIP vs Individual Downloads

For 5–10 files, individual downloads are fine. For 50+, a ZIP saves time and keeps your downloads folder organized.

Privacy for Personal Photos

Batch converting often means hundreds of personal images — vacations, family, home. Uploading that entire folder to a website sends your entire photo library to a stranger's server.

Browser-based batch conversion loads files into your browser's memory, processes them locally, and offers a ZIP download. Nothing leaves your device.

Workflow: Convert, Then Compress

For web use, a typical pipeline:

Convert to WebP or AVIF (Image Converter)
Resize if needed (Image Resizer)
Compress for final size (Image Compressor)

All three can run in the browser without uploads.

Try It Yourself

Batch convert images with our free Image Converter — HEIC, JPEG, PNG, WebP, AVIF. Drop multiple files, set format and quality, download as ZIP. Popular conversions: HEIC to JPEG, PNG to WebP, JPEG to AVIF.