Bulk AVIF Optimizer
Convert and compress images to AVIF via canvas encoding with 4 presets — Web 1920px/q60, Balanced 2048px/q75 (default), High Quality 3000px/q85, Maximum original-size/q95 — plus free quality (10–100) and max-width (0–4000, 0 = Original) sliders that decouple the preset. Only wider images downscale; single saves as optimized.avif, batches as *.avif in avif-images.zip — local work, 2 free batches a day.
Runs on CanvasJSZip
How to Use the Bulk AVIF Optimizer
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See allBatch Image Editor
Downscale a batch of images to one max width (default 1920px) with an optional bottom-right watermark, then download everything as a ZIP. Same max-width and watermark apply to every image — local Canvas work, 3 free images a day.
Bulk Image Format Converter
Convert image batches to JPG, PNG, WebP, AVIF, GIF, BMP, ICO, or SVG outputs (JPEG/PNG/WebP/AVIF/HEIC/HEIF/GIF/BMP/ICO/SVG inputs; HEIC via heic2any, SVG rasterized at intrinsic size or 1024px fallback) with a quality slider (10–100, default 80; applies to lossy encodes). Pair pages (?from/?to) preset the output. Flat ZIP renamed per file — local, 5-file guest batches, 25 signed-in, 500 Pro.
Bulk SVG to PNG
Rasterize SVG vectors to crisp PNGs at 1x, 2x (default), 3x, or 4x scale — base size read from the SVG width/height attributes (100px fallback) — with filename preservation (.svg becomes .png). Developers ship full icon sets in four runs — local Canvas work, 2 free batches a day.
Bulk PDF Size Reducer
Shrink stacks of PDFs 40–90% with Maximum, Balanced, or High-Quality tiers that recompress images and strip metadata. Firms email 25 filings instead of courier — local pdf-lib work, 2 free batches a day.
Bulk Video Compressor
Compress multiple videos with one shared CRF setting (18 high quality, 23 default, 28 smaller, 35 maximum) encoded libx264 medium preset with 128k AAC audio. Studios batch 20 daily uploads at CRF 28 — local FFmpeg WASM, 2 free batches a day.
Frequently Asked Questions
AVIF or WebP for my site images?
AVIF where supported saves over WebP at equal quality — but outputs here are AVIF-only, so keep WebP fallbacks from the Bulk Image Converter. Serve AVIF with WebP fallback: modern Chrome and Firefox take AVIF, older clients fall back seamlessly.
What quality preset and max-width?
Web (1920px/q60) smallest, Balanced (2048px/q75) default, High Quality (3000px/q85), Maximum (original width/q95). Only images wider than the cap downscale — narrower files keep native pixels at the chosen quality.
Which browsers display AVIF?
Chrome, Firefox, Edge, and Safari 16+ cover most modern traffic; older browsers need the WebP fallback. Encoding itself needs a browser with AVIF canvas support — unsupported browsers fail per file with an explicit error.
Are my images uploaded when optimizing?
No — conversion runs locally in your browser on Canvas; images never leave your device. Only the final ZIP counts as one Pro download — the whole optimized set in a single save.
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Last updated October 2026