Why Your Instagram Photos Look Blurry (And How to Fix It)

You shot it sharp. You uploaded it. It posted blurry. Welcome to one of Instagram's most frustrating quirks — and one with a fixable root cause every single time.

The three real reasons

1. Wrong dimensions. Instagram resizes anything that isn't exactly 1080 pixels wide. Resizing always degrades quality. Upload at 1080×1080, 1080×1350, or 1080×1920 and skip the platform's resize step entirely.

2. Aggressive compression of large files. Files over ~3 MB get more aggressively re-encoded. Export at quality 85 JPG and you'll often land under that threshold without visible quality loss.

3. Uploading via Wi-Fi backup or third-party tools. Some sharing tools re-encode your image before Instagram even sees it. Upload directly from the Instagram app or from a desktop scheduler that preserves your original file.

The fix

Resize to the exact target dimension before uploading. Gitsize does this in one click — square, portrait, or vertical, browser-side, no quality loss from a server round-trip.

Ready to resize? Use GitSize free — no signup, nothing uploaded, your image stays on your device.