HEIC (High Efficiency Image Container) is the default photo format on every iPhone since iOS 11 — it packs excellent quality into small files on your device. But the moment you want to publish those photos on a website, upload them to a web app, or share them with someone on a non-Apple platform, HEIC becomes a problem. The modern solution is WebP: Google's open format that combines near-HEIC compression efficiency with near-universal browser support. Converting HEIC to WebP gives you files that are 25–35% smaller than JPEG at equivalent quality and that every modern browser can display natively.

HEIC vs WebP: Format Comparison

Understanding why these two formats exist helps you choose the right one for each use case.

HEIC (High Efficiency Image Container): Apple's container format based on HEVC video compression. Delivers exceptional quality-to-size ratio on Apple hardware, supports 16-bit color depth, HDR, and Live Photos. The catch: poor support outside the Apple ecosystem. Windows requires a paid codec, Android has limited support, and most web browsers still cannot display raw HEIC files.
WebP: Google's open-source format developed in 2010 and now supported by 97% of browsers worldwide including Chrome, Firefox, Safari (since 2020), and Edge. WebP uses advanced predictive coding to deliver 25–34% smaller files than JPEG at the same visual quality. It also supports transparency (alpha channel), which HEIC does not expose in standard implementations, and both lossy and lossless compression modes.

The key difference: HEIC wins on compression efficiency when staying within the Apple ecosystem. WebP wins on web compatibility and openness. For anything destined for the web, WebP is the correct choice.

When to Convert HEIC to WebP

WebP is the right target format in these scenarios:

Publishing photos to a website or blog: WebP reduces page load times and improves Core Web Vitals scores. A gallery of 20 photos at 1 MB each in JPEG becomes roughly 15 MB in WebP — a 25% bandwidth saving your visitors will feel.
Uploading to web apps: Platforms like Shopify, WordPress, and most modern CMS tools accept WebP natively. Uploading WebP directly avoids double-conversion quality loss.
Product photos with transparent backgrounds: After removing a background from an iPhone photo, save as WebP (not JPEG). WebP supports full alpha transparency, so your product photos will have clean, transparent edges rather than white boxes.
Sharing images that will be displayed in a browser: Whether in an email that renders in webmail, a Slack message, or a social media post, WebP is now broadly understood.

When to Convert HEIC to JPG Instead

WebP is not always the best choice. Use JPEG when:

Sending to people who use older desktop software: Legacy photo editors, older versions of Windows Photo Viewer, and some printing services do not support WebP. JPEG is the universal fallback that works everywhere.
Printing: Print shops and professional printing services accept JPEG universally. WebP support in print workflows is still inconsistent.
Sharing via email attachments: Certain email clients on older operating systems may not render WebP inline. For maximum compatibility in email, JPEG is safer.

Need JPEG instead? Use the dedicated HEIC to JPG converter for the same fast, browser-based conversion experience.

How to Convert HEIC to WebP Online

The fastest method requires no software installation. Picovert's image converter handles HEIC to WebP conversion entirely in your browser — your photos never leave your device. The HEIC decoding and WebP encoding happen locally using WebAssembly, which means no upload wait times and no privacy concerns.

Picovert supports batch conversion, so you can convert dozens of HEIC photos from a vacation or product shoot in a single session.

Step-by-Step Conversion Guide

Open Picovert's Image Converter in your browser.
Drop your HEIC files onto the upload area, or click to browse and select them. You can select multiple files at once for batch conversion.
In the output format selector, choose WebP.
Adjust the quality slider if needed (see quality recommendations below).
Click Convert and wait a few seconds while each file is processed locally in your browser.
Download individual files or use the Download All button to get a ZIP archive of all converted WebP images.

Quality Settings for HEIC to WebP

WebP quality is set on a scale of 1–100, similar to JPEG. Here are the recommended settings for common use cases:

Quality 80–85: Best for most web use. Produces files 30–40% smaller than JPEG at equivalent visual quality. Differences are invisible on screen at normal viewing sizes.
Quality 90–95: Use for high-resolution hero images or portfolio photos where you want near-original quality. Files are larger but still smaller than JPEG at the same quality level.
Quality 75: The aggressive option for thumbnails, preview images, or any photo displayed at small sizes. Very small files with acceptable quality at small dimensions.
Lossless WebP: For logos, graphics, screenshots, or images with text. Lossless WebP preserves every pixel perfectly — like PNG but typically 20–30% smaller. This is the right mode when you need transparency without any compression artifacts.

A quick rule of thumb: if your original HEIC photo is 3 MB, expect a WebP at quality 85 to be around 1.5–2 MB — roughly half the size of an equivalent JPEG.

Batch Conversion Tips

When converting many HEIC files at once:

Use consistent quality settings: Pick one quality level for a whole shoot so your photos look uniform when displayed together on a page.
Check file sizes after conversion: If any converted WebP is still over 1 MB and will be displayed at typical web sizes (under 1200 px wide), consider running it through image compression for an additional size reduction.
Name your output files: Good online converters preserve the original filename and just change the extension from .heic to .webp, making it easy to match converted files to their originals.

Ready to convert? Start with Picovert's free HEIC to WebP converter — no sign-up, no file size limits on individual files, and all processing happens locally in your browser. For further optimization after conversion, the image compressor can squeeze WebP files even smaller without visible quality loss.