Free Image Compressor & HEIC Converter
Welcome to the ultimate privacy-first image studio. Whether you need to convert iPhone HEIC photos to JPG, compress massive images to an exact target file size, auto-trim PNG transparency, or batch process an entire album into next-generation formats like AVIF or WebP, Expert Web Tools provides a professional-grade editor that runs entirely within your browser.
HEIC to JPG Converter
Modern iPhones use the High-Efficiency Image Container (HEIC) format, which often cannot be opened on Windows PCs or uploaded to older websites. Our integrated WebAssembly engine decodes HEIC files natively in your browser, allowing you to seamlessly export them as universally compatible JPG or PNG files without uploading your private photos to a cloud server.
Target Exact File Sizes
Tired of guessing which quality percentage to use? Our advanced compression engine includes a "Target Size" feature. Simply enter the maximum allowed file size (for example, "exactly 250KB" for a job application or web portal), and our algorithmic optimizer will calculate the perfect quality settings to meet your requirement without degrading visual fidelity.
100% Local & Private
Most online image converters upload your files to remote servers, putting your privacy and EXIF data at risk. This studio uses cutting-edge HTML5 Canvas and local Web Workers. Your images never leave your device. Conversion, color-grading, cropping, and watermarking all happen locally, saving your bandwidth and ensuring absolute privacy.
Frequently Asked Questions
How do I convert HEIC to JPG for free without uploading?
Simply drag and drop your iPhone HEIC photos into the workspace above. Our local WebAssembly engine will instantly decode the HEIC file locally. Select "JPEG" as your Global Format and click Export. The entire process bypasses the cloud, ensuring your photos remain 100% private on your device.
Are my images uploaded to a cloud server for compression?
Absolutely not. Expert Web Tools guarantees 100% privacy. All image conversion, cropping, and compression happens locally inside your browser using HTML5 Canvas and Web Workers. Your files never leave your computer or phone.
How can I compress an image to an exact file size (e.g. 300KB)?
Open the Export Settings panel on the right side of the tool and select the 'Target Size' tab. Enter your desired maximum file size (for example, 300 KB). Our compression engine will algorithmically perform a local binary search to calculate the perfect quality ratio to hit that limit exactly, all without degrading visual fidelity more than necessary.
How does the Auto-Trim tool work for PNGs?
If you have a logo or asset with excessive transparent whitespace, click the "Auto-Trim Subject" button in the Shapes & Framing panel. Our tool scans the pixel data locally to detect the exact boundaries of your graphic, instantly generating a perfect crop box around the visible subject.