Image Format Converter

Why Convert HEIC to JPG?

HEIC (High-Efficiency Image Container) is the default image format on Apple devices running iOS 11 and later. It uses the HEVC codec to compress photos, achieving roughly 50% smaller file sizes than JPEG at equivalent visual quality. Excellent for saving storage on your iPhone, but a real headache outside the Apple ecosystem.

Many websites, email clients, e-commerce platforms, and older image editors do not support HEIC files. Converting HEIC to the universally accepted JPG (JPEG) format ensures your photos can be opened, edited, and uploaded anywhere without compatibility issues.

Why Convert WebP to JPG or PNG?

WebP is a modern image format developed by Google, optimized for web delivery. It produces 25–35% smaller file sizes than JPEG and supports lossless compression, transparency, and animation. The catch: WebP has limited support outside web browsers — many native photo viewers, older Photoshop versions, and print services cannot open WebP files.

If you save an image from a website and it downloads as WebP, you may need to convert it to JPG (for photographs) or PNG (for graphics with transparency) before using it in presentations, documents, or print designs.

Supported Conversion Paths

9grid's Format Converter supports the following conversions between every major web image format:

• HEIC → JPG: The most common conversion. Perfect for iPhone users sharing on non-Apple platforms.
• HEIC → PNG: PNG output avoids an additional lossy encoding step — useful for screenshots and graphic overlays.
• WebP → JPG: Convert web-downloaded images to universally compatible JPEG.
• WebP → PNG: Preserve transparency when converting WebP graphics or illustrations.
• PNG → JPG: Shrink lossless PNGs into compressed JPEGs. Ideal for web publishing and email.
• JPG → PNG: Convert to PNG to avoid additional lossy encoding during later edits; this cannot restore detail already lost in the JPG.
• JPG → WebP: Optimize photos for web with modern WebP compression.
• PNG → WebP: Dramatically reduce PNG file sizes while keeping transparency.

How Is This Tool 100% Private?

Unlike most online converters that force you to upload your personal photos to their servers (where they might be stored, analyzed, or used to train AI models), 9grid uses Client-Side Processing. The entire conversion happens within your browser using JavaScript and WebAssembly. Your photos never leave your device.

This is especially important for sensitive content like personal photos, client work, medical images, legal documents, or anything you don't want stored on third-party servers. You can verify it: open your browser's Network tab and you will see zero image upload requests during the conversion process.

Pick the Right Output Before You Publish or Split

Convert HEIC to JPG when you need universal upload support on Windows tools, WeChat Moments, or older CMS forms. Convert to PNG when the next step is graphic overlay, text, or a grid export that should not add another lossy encode on flat colors.

WebP downloads from browsers are fine for archiving, but many design handoffs and print shops still expect JPG or PNG. Batch-convert the set once here, then feed the results into the compressor or grid splitter without bouncing through three different websites.

A practical pipeline for iPhone shoots: HEIC → high-quality JPG for photos you will post as-is, HEIC → PNG for screenshots and UI captures, then compress only the files that still miss a platform size cap. That order avoids compressing twice and keeps seams cleaner if you later cut a 3×3.

Why won't my HEIC photo open on Windows / web apps?

HEIC is an Apple-native format that many platforms don't yet support. Converting to JPG or PNG makes the photo universally readable.

Will converting HEIC to JPG reduce quality?

Slightly — JPG is lossy and you are re-encoding already-compressed data. For maximum quality keep the JPG quality at 90+ or convert to PNG (lossless but larger).

Can I batch convert multiple files?

Yes. Drop or select up to dozens of files at once. They are all processed in your browser in parallel.

Are my images uploaded anywhere?

No. Conversion runs locally via the browser Canvas API. Your photos never leave your device.

Is WebP better than JPG?

For web usage, yes — typically 25–35% smaller at equivalent quality. JPG still wins for universal compatibility (printing, legacy software). Use WebP for websites, JPG for everything else.