How to Convert HEIC to WebP: Step-by-Step Tutorial

By Bill Crawford  ·  March 2026  ·  6 min read  ·  Last updated March 5, 2026

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What This Tutorial Covers

This tutorial walks you through converting HEIC and HEIF photos to WebP format using the browser-based tool on this site. No software installation required. You will learn how to add files, set the quality level, use batch ZIP download, and deploy your WebP images for web use.

For background on why you might want WebP and how it compares to JPG, see the companion HEIC to WebP Complete Guide.

What You Need

• One or more .heic or .heif files (typically from an iPhone or iPad)
• A modern browser: Chrome, Edge, Firefox, or Safari (2023 or later)
• No account, no software, no subscription

Step 1: Open the Converter

Navigate to dataconversioncenter.com/image-tools/heic-to-webp/. The page loads all required libraries (heic2any, JSZip) from CDN — no installation needed. WebP encoding is handled by the browser's native Canvas API, which supports WebP output in all modern browsers.

Step 2: Add Your HEIC Files

You have two ways to add files:

• Drag and drop: Open your file manager and drag one or more .heic files directly onto the drop zone labeled "Drop HEIC/HEIF files here". The zone highlights in blue when you hover over it.
• Browse: Click anywhere on the drop zone (or the "Browse Files" link) to open your file picker. Select multiple files using Ctrl+click (Windows) or Cmd+click (Mac).

As soon as files are added, the tool generates thumbnail previews for each one. You will see an Input Files grid with a card per file showing the filename, file size, and a Ready status badge.

Note: Files with an extension other than .heic or .heif are automatically rejected with an inline error message and are not added to the conversion queue.

Step 3: Set Quality and Download Mode

Quality Slider

The quality slider controls the balance between file size and visual fidelity in the WebP output. The scale runs from 1 (maximum compression, lowest quality) to 100 (near-lossless, largest file). Quick reference:

• 85 (default): Excellent quality, significant size reduction — the right choice for most web images
• 90–95: High quality for hero images or detailed photography where every pixel matters
• 70–80: Smaller files for thumbnails, preview images, or secondary media
• Below 65: Heavily compressed — noticeable artifacts in complex textures

You can change the quality setting at any time before clicking Convert. It does not lock after files are added.

Download Mode

Before converting, also decide how you want to receive your files:

• Individual downloads (default): Leave "Download as ZIP" unchecked. After conversion, each output card has its own Download button, and a "Download All WebPs" button appears for sequential bulk download.
• ZIP archive: Check "Download as ZIP". After conversion, a single "Download ZIP" button downloads all WebP files in one archive named dataconversioncenter_heic_to_webp_YYYYMMDDHHMM.zip using your local date and time.

For batches larger than five files, the ZIP option is strongly recommended to avoid multiple simultaneous browser download dialogs.

Step 4: Click "Convert to WebP"

Click the blue Convert to WebP button. The button label changes to "Converting…" and is disabled while conversion runs.

For each file in the queue:

1. The status badge changes from Ready to Converting…
2. heic2any decodes the HEIC file to pixel data in memory.
3. The pixel data is drawn to an HTML Canvas element at full resolution.
4. The browser's canvas.toBlob('image/webp', quality) API encodes the canvas to WebP at your chosen quality level.
5. The status changes to Converted and an output card appears in the Output Files section.

Files are processed two at a time for throughput efficiency. The progress bar and label track overall progress.

Step 5: Review the Results

After conversion completes, a summary banner appears: either "✓ All N files converted successfully" or a count of successes and failures.

Each output card shows:

• A thumbnail preview of the converted file
• The output filename — same base name as the input with .webp extension (e.g. photo.heic → photo.webp)
• Output file size — compare this with the input size to see the compression achieved
• A per-file Download WebP button

Any files that failed to convert are marked with a red Error badge. The most common cause is a file that isn't actually HEIC (for example, a renamed JPG). The tool continues converting the remaining files when one fails.

Step 6: Download Your WebP Files

Individual download

Click the ⬇ Download WebP button on any output card to save that file immediately.

Download All (no ZIP)

With "Download as ZIP" unchecked, click Download All WebPs. The tool triggers sequential browser downloads with a 120 ms delay between each to prevent browser throttling.

Download ZIP

With "Download as ZIP" checked, click Download ZIP. JSZip assembles all WebP blobs in memory and triggers a single download named, for example, dataconversioncenter_heic_to_webp_202603051709.zip.

Step 7: The Tool Resets Automatically

After a ZIP download or "Download All" completes, the tool automatically resets to its initial state. All thumbnails, cards, and file references are cleared. The quality slider resets to 85 and the ZIP checkbox resets to unchecked. Click Start Over to reset manually at any point during a session.

Bonus: Deploy WebP Images on Your Website

If you are preparing images for a website, here are the key deployment steps after downloading your WebP files:

1. Upload to your CMS or web server's media directory.
2. In WordPress, simply upload WebP files through the Media Library — WordPress 5.8+ accepts WebP natively.
3. For direct HTML use: <img src="photo.webp" alt="description" width="800" height="600">
4. For maximum browser compatibility, wrap in a <picture> element with a JPG fallback: <picture><source type="image/webp" srcset="photo.webp"><img src="photo.jpg" alt="description"></picture>

Troubleshooting

• File shows Error status: Verify the file is a genuine HEIC captured on an Apple device. Files renamed to .heic that are actually JPG or PNG will fail HEIC decoding.
• Thumbnails slow to generate: Very large HEIC files (e.g. 48 MP from iPhone 15 Pro) may take 5–10 seconds to decode the preview. The tool will proceed automatically when ready.
• WebP looks blurry: Try increasing the quality slider to 90 or higher. Some image types (complex textures, fine detail) require higher quality settings to preserve sharpness.
• Safari issues on older iOS: WebP export from Canvas requires Safari 14 / iOS 14 or later. On older devices, use Chrome or Edge instead, or use the JPG export option.
• "WebP encoding failed" error: This rare error means the browser's Canvas API could not encode WebP — typically in very old browser versions. Update your browser to resolve it.
• ZIP not downloading: Some browsers require a direct user interaction to trigger downloads. Ensure you clicked the Download ZIP button directly rather than via a script or automation.

Next Steps After Conversion

• Upload to your CMS: WebP files are accepted by WordPress, Shopify, Squarespace, and most modern platforms. Upload directly through the media manager.
• Resize for different breakpoints: Use Image Resizer to generate multiple sizes for responsive images (srcset).
• Need further compression: Use Image Compressor to reduce file size further without another conversion step.
• Need universal compatibility: If a target system doesn't accept WebP, use HEIC to JPG instead for maximum compatibility.
• Need lossless archiving: Use HEIC to TIFF to preserve every pixel of the original for archival storage.

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