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Koofy Image web — convert HEIC and reduce photo sizes

Koofy Image is a free web tool for converting up to 10 photos to JPG, PNG or WebP and reducing file sizes. No signup is required; photo conversion runs in your browser.

Open Koofy Image web →About the Koofy Image app →
Koofy Image

Supported formats and limits

Inputs: JPG/JPEG, PNG, static WebP and HEIC/HEIF. Outputs: JPG, PNG and WebP. Select up to 10 files, 25 MiB per file and 100 MiB total. Large photos may fail to process if your device runs out of memory.

Are my photos uploaded?

The web converter does not upload photo files to a server. Download results individually or as a ZIP file. Your original files are not overwritten.

Web tool versus mobile app

Free access, no signup and ZIP downloads on this page describe the web tool. Check the separate mobile app introduction for its saving workflow and terms. The web tool interface supports Korean and English.

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Koofy Reader — TXT and EPUB reader for iPhone and Android

Import TXT and EPUB files into Koofy Reader, continue from your saved reading position, or listen using your device’s text-to-speech voices.

How to read TXT and EPUB files on iPhone or Android

Import a downloaded TXT or EPUB file into Koofy Reader to read it like a book, adjust the text size and return to your saved position.

How to convert iPhone HEIC photos to JPG

If a HEIC photo will not open on another device or upload to a website, converting it to JPG may help. Koofy Image web processes the photo in your browser without uploading it.

How to reduce photo file sizes for a blog

If a high-resolution photo exceeds an upload limit, adjust JPG or WebP quality and image dimensions. Koofy Image web lets you set a target size and inspect the result.