Converts JPEG files to AVIF format — photographs, web images, and social media where smaller file size matters more than perfect quality to next-gen web images. All conversion happens locally in your browser with no file size limits.
Runs on Canvas
Content reviewed October 2026 · About Toolzum
HEIC to BMP output is not produced here — HEIC input decodes via heic2any, but Canvas cannot encode BMP, so conversion fails locally. Convert HEIC to PNG/JPG/WebP instead — local, unlimited saves.
HEIC to TIFF output is not produced here — HEIC input decodes via heic2any, but Canvas cannot encode TIFF, so conversion fails locally. Convert HEIC to PNG/JPG/WebP instead — local, unlimited saves.
HEIC to ICO output is not produced here — HEIC input decodes via heic2any, but Canvas cannot encode ICO, so conversion fails locally. Convert HEIC to PNG/JPG/WebP instead — local, unlimited saves.
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Bind hundreds of JPG, PNG, or WebP images into one multi-page PDF with page size, orientation, and fit control. Agents compile 80 property photos into a brochure — local jsPDF work, 2 free batches a day.
JPEG (Joint Photographic Experts Group) uses lossy compressed encoding and is best for photographs, web images, and social media where smaller file size matters more than perfect quality. AVIF (AV1 Image File Format) uses lossy or lossless encoding and excels at next-gen web images — royalty-free format with better compression than WebP and JPEG. Converting between them lets you take advantage of each format's strengths — for example, using a compressed format for sharing and a lossless format for editing. All conversion happens locally in your browser with no file size limits.
AVIF offers 50% better compression than JPG at the same visual quality. Converting to AVIF reduces file sizes significantly while maintaining or improving image clarity — ideal for web performance.
You can adjust the AVIF compression quality from 1-100. Higher values preserve more detail but produce larger files. The default (80) provides a good balance of quality and size.
AVIF is more efficient than JPG, so you often get better quality at smaller file sizes. However, since JPG is lossy, the source quality limits the output. Very low-quality JPGs won't improve by converting.
Chrome, Firefox, Safari 16.4+, and Edge all support AVIF. For older browsers, provide a JPG fallback using the <picture> element.
Yes. The JPG to AVIF conversion runs entirely in your browser using Canvas API. No images are uploaded to any server.
AVIF to JPG
Convert modern AVIF images to universal JPG in your browser — maximum compatibility where AVIF support lags where AVIF support still lags.
Bulk Image Format Converter
Convert image batches between JPG, PNG, WebP, and AVIF 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). Pair pages (?from/?to) preset the output. Flat ZIP renamed per file — local, 5-file guest batches, 25 signed-in, 500 Pro.
Image Format Converter
Convert one browser-decodable image to PNG, JPG, or WebP — the only outputs canvas can encode. HEIC/SVG/JXL/TIFF and other exotic targets fail honestly instead of pretending. Nothing is uploaded; every conversion runs in your browser.