Batch Convert Images to AVIF

Batch convert JPEG/PNG/WebP to AVIF for smaller files at the same visual quality · completely free · 100% local processing, nothing uploaded

Image Processing

Check to enable a feature — multiple selection supported

Compress

Compression modeQuality (0.05–0.98)Target KB

Rotate & Flip

Rotate

Flip horizontal (mirror)Flip vertical (upside down)

Crop & Resize

Crop ratioCustom ratio (width:height):

Drag the crop box on the preview to adjust — drag a corner to resize

Target width (px)

Convert Format

Output format

AVIF encoding is noticeably slower than JPEG/WebP — large images or batches may take several seconds to tens of seconds each, please be patient

With PDF selected, exporting skips the ZIP-packaging step and produces a single PDF with each image as its own page

Rename

Naming template (placeholders: {name} original filename · {n} sequence number)

Clear Privacy Data

Add Watermark

One-click styles

Pick one for an instant result — fine-tune the details below anytime

Add manually

Watermark templates

Backup & transfer (optional)

Clearing browser data, switching devices, or switching browsers loses the templates saved above — export a file to keep your own backup, then import it back whenever you need it

Preview

Click to select a layer · drag to move · scroll to zoom · Shift+scroll to rotate

🔒 Everything is processed locally on your device — your images are never uploaded or stored on a server

Multiple selection supported; EXIF orientation is auto-corrected on import · supports common image formats

+ Add more images

No layer selected

OpacityScaleRotation (°)Blend modeMosaic block size

Quick position (highlighted = current position):

Click to choose filesMultiple selection supportedClick to choose a folderBatch import an entire folder

Batch Process & Export

✓ Output files are never watermarked or branded by us — crop/compress/convert/watermark all run in one pass

View technical details

What's AVIF, and why would I use it over WebP or JPEG?

AVIF is a newer image format that typically produces meaningfully smaller files than JPEG or WebP at the same visual quality — useful for website images where every KB affects load time. The tradeoff is encoding takes longer and a handful of older browsers and apps still don't support it.

Will every browser display an AVIF image?

All current major browsers (Chrome, Firefox, Safari, Edge) support AVIF now, but some older browser versions and non-browser software (image viewers, older editing tools) don't. If broad compatibility matters more than file size, WebP is a safer middle ground.

Does converting to AVIF lose quality?

AVIF conversion is lossy by default, same as JPEG or WebP — but at a given file size, AVIF generally preserves more visual detail than either. If the source is already a lossy JPEG or WebP, converting adds a small amount of additional generation loss, same as converting between any two lossy formats.