100KB Extension v1.1.1: Compress & resize files in 0ms directly in Google Chrome
Convert dozens of iPhone and Apple HEIC photos into universally compatible JPGs simultaneously in your browser. 100% free with ZIP export.
Convert dozens of iPhone and Apple HEIC photos into universally compatible JPGs simultaneously in your browser. 100% free with ZIP export.
| Format | Quantization Engine | Color Space & Subsampling | Target Size Ceiling | Portal Acceptance |
|---|---|---|---|---|
| JPEG / JPG | Lossy 8x8 DCT Frequency Quantization | YCbCr (4:2:0 Subsampling) | 20KB – 500KB | 100% (Universal Exam & Visa Portals) |
| PNG | Lossless Deflate / LZ77 Filtering | RGB + 8-bit Alpha Channel | 100KB – 2MB | E-commerce, Logos & Digital Design |
| WEBP | VP8 Intra-frame Prediction | YCbCr 4:2:0 / Lossless | 15KB – 300KB | Modern Web Apps & Mobile Display |
Follow these simple steps to optimize and prepare your files secure:
Select or drag your Apple .heic or .heif photos into the converter.
Our high-performance WASM decoder processes images in local memory.
Save universally compatible JPG images with original color depth and EXIF tags.
Find answers to common questions about our free online tools.
Lead WebAssembly Systems Engineer at 100KB Tools. Technical specifications researched and cross-verified against official ICAO Doc 9303 Part 9 standards, ISO/IEC 10918-1 JPEG specifications, and PDF/A ISO 19005 guidelines.
Reduce image file size in KB or MB online. Compress JPG, PNG, and WebP files securely without changing dimensions.
Convert PNG and WebP images to JPG format online instantly. Compress file size to target KB limits for form uploads.
Resize image dimensions in pixels, mm, cm, or inches online. Crop photos in circle, square, or rounded corner shapes.
Drag and drop your file here, or click to browse. Max size 25MB.
iPhones save pictures in `.heic` format. Exam/visa portals reject HEIC. We convert your image securely using AI for privacy.