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.
How to Use the Bulk Image Format Converter
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Frequently Asked Questions
How do I convert 300 images to WebP before a deploy?
Drop the files, pick WebP output at quality 80, and run — every file keeps its basename with a .webp extension in a flat ZIP. Signed-in free covers 2 batches a day; Pro is unlimited.
Which output format should my website use?
WebP for broad compatibility today at ~30% smaller than JPEG; AVIF for maximum savings where your audience runs modern browsers; GIF for simple animations, ICO for favicons, SVG wrapper for scalable containers, BMP only when an uncompressed bitmap is required. HEIC, TIFF, and JXL outputs are not encodable in any browser.
Are my images uploaded during conversion?
No — conversion runs locally in your browser on Canvas, so images never leave your device. Only the final ZIP save counts against the Pro download quota (signed-in free: 2 a day; Pro unlimited with 2 GB files).
Do filenames and folders survive conversion?
Filenames yes, folders no: each file keeps its basename with the new extension, but the ZIP is flat with no directory structure. Rebuild upload paths after downloading.
What quality setting balances size and looks?
Quality 80 default for photos, 90+ for product shots where texture matters, PNG for graphics with text. Convert 5 samples at 75/80/85 once and compare the downloads, then batch the winner.
Can it convert iPhone HEIC photos?
Yes — HEIC/HEIF (plus JFIF by extension) route through heic2any to any of the 8 outputs locally. SVG inputs rasterize at their intrinsic size, or 1024px when the SVG carries no dimensions.
Related Image Tools
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.
Batch Image Converter
Convert a batch of images to one output — JPG, PNG, or WebP — at quality 10–100% (default 80%), capped at 4096px longest side, then download everything as a ZIP. Files that fail conversion fall back to their originals inside the same archive — local library work.
Last updated October 2026