Bulk AVIF Compressor
Choose quality, compare actual sizes and inspect each result before downloading your batch.
A little less weight. A lot more room.
Good images. Less baggage.
Drop your images here, or choose a batch from your device.
Your next batch starts here.
Preview, rename and download. All in one place.
Test smaller AVIF delivery copies with a real local AVIF encoder. This page starts at 75% quality with original dimensions and keeps AVIF output locked. Encoding can take longer than JPEG or WebP, and an efficient AVIF source may not shrink. If an unchanged-dimension AVIF encode is no smaller, the Smart Size Guard returns the original file instead of introducing size bloat.
How it works
- Review the initial format, 75% quality and dimension setting before adding your images.
- Drop the batch and compare the ready preview with the original at 100%. Increase quality or change dimensions if the result needs more detail.
- Use Apply & re-compress after any setting changes, then download ready files individually or as a ZIP.
Compression choices and tradeoffs
| Feature | Original AVIF | Compressed AVIF |
|---|---|---|
| Quality | Already encoded source | A new encode at the selected quality, starting at 75% |
| Dimensions | Source resolution | Original dimensions initially |
| No-smaller result | Original file bytes | Kept when format and dimensions are unchanged and the new file is no smaller |
| Target size | Varies by image | No guaranteed KB limit or fixed savings percentage |
Frequently asked questions
Why can AVIF compression be slow or save nothing?
AVIF encoding is CPU intensive, and the original may already be efficiently encoded. The local encoder loads on demand and workers can reuse it. There is no hidden quality-reduction loop to force a target size.
Is lossy compression the same as keeping every original detail?
No. JPEG, WebP and AVIF quality settings are lossy and are not directly equivalent across encoders. Keep original masters and compare fine detail at 100% before using compressed copies.
What does the Smart Size Guard protect?
For a same-format conversion with unchanged dimensions and no canvas edit, it keeps the original if the encoded file is no smaller. It does not undo a requested format change, resize or white platform canvas.
Can I request an exact size such as 100KB?
Not in the current tool. You can adjust quality and dimensions and inspect actual output sizes. The compressor does not keep lowering quality secretly to meet an arbitrary byte target.