The ConvertOwl Blog

Guides, explainers & file wisdom

How-to guides, file-format explainers, and notes on the technology that lets your files stay on your device.

FormatsJuly 28, 20266 min

Which Video Format Is Best? MP4 vs MOV vs WebM vs MKV

MP4, MOV, WebM, and MKV compared for compatibility, file size, and quality, with a clear answer for which one to actually use.

How-toJuly 28, 20266 min

Shrink photos, PDFs, and other files without visible quality loss. What actually makes files big, and the free browser tools to fix it.

How-toJuly 27, 20265 min

Convert HEIC photos to PNG for free in your browser. Why iPhone photos won't open on Windows or in old apps, and how to fix it in seconds.

How-toJuly 27, 20265 min

Convert AVIF images to PNG for free in your browser. Why AVIF files won't open everywhere, and how to fix it in a couple of clicks.

FormatsJuly 21, 20266 min

MP3, FLAC, and WAV compared for music: file size, sound quality, and which one to actually use for listening, archiving, or editing.

How-toJuly 17, 20264 min

Compress a PDF free in your browser. Learn what makes PDFs big, how much you can save, and how to shrink one with no upload. Your files stay private.

How-toJuly 16, 20265 min

Convert HEIC photos from your iPhone to JPG for free, right in your browser. No upload, no account, and your photos never leave your device.