IrfanView
Fast Windows image viewer and batch converter, free for personal use.
Quick facts
- Price model
- Free
- Starting price
- Free for non-commercial use
- Best for
- Batch resize · Quick format conversion · Folder slideshows
- Replaces
- ACDSee subscriptions, Paid batch converters
- Platforms
- Windows
- Last verified
- 2026-06-22
Why it's listed
Absurdly fast on old PCs. Download only from irfanview.com.
IrfanView opens almost any image format, resizes batches, and slaps on watermarks instantly. The classic lightweight viewer when Photoshop is overkill and Photos is too slow.
The catch
Windows only; UI is vintage 2003 (which fans consider a feature).
Good fit for
- Windows households
- Ebay sellers resizing photos
Not ideal for
- Mac users
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