The Image Converter changes image formats in batches, right in your browser tab. Here is the whole workflow.
Image: Animdock Stock — free to download.
1. Drop your images
Open the converter and drop PNG, JPG, WebP, AVIF, HEIC, GIF or BMP files on the upload area — as many as you like. Each file appears in the list with a thumbnail and its size. Nothing leaves your device: decoding and encoding happen in this tab.
2. Pick the output format
- JPG — the smallest choice for photos, opens everywhere.
- PNG — lossless, keeps transparency; best for graphics and screenshots.
- WebP — much smaller than PNG and keeps transparency; ideal for websites.
- AVIF — the smallest modern format; great for fast web pages.
- PDF — one page per image, in one document or one PDF per image.
3. Set quality and background
For JPG, WebP and AVIF a Quality slider appears; 80–90 looks identical to the original for most photos. JPG and PDF have no transparency, so transparent areas are filled with the background colour you choose (white by default). Tick Keep transparency to keep the alpha channel in PNG, WebP and AVIF.
4. Convert and download
Press Convert. Each row shows the new size; download files one by one or use Download all (ZIP). Shortcut pages like WebP to PNG or HEIC to JPG open with the right format already selected.
Image: Animdock Stock — free to download.
Tip: JPG photos added to a PDF are embedded as they are — no second compression — so scanned text stays sharp.