Saved from the web, rejected everywhere else
Websites serve modern formats like AVIF and WebP because they’re small and fast to load, so saving a picture increasingly hands you a file in whatever format the site used — not the format your editor, printer, or upload form expects. Renaming the extension doesn’t help, because the data inside doesn’t change; the file needs a real conversion. This converter reads JPG, PNG, WebP, AVIF, GIF, and BMP and writes JPG, PNG, or WebP, which covers nearly every mismatch you’ll actually meet. The one exception is HEIC from iPhones, which has its own dedicated converters on this site.
Step by step
- Open the Image Converter on SafeFileConvert. There’s no account to create, nothing to install, and no daily limit on conversions.
- Pick your output format: JPG, PNG, or WebP. If you always convert the same pair, the dedicated pages such as AVIF to JPG or WebP to PNG do the same job with the formats pre-selected — one less thing to click.
- Drop your images onto the dropzone. Mixed batches are fine, since the tool reads each file with the browser’s own decoders and converts it to your chosen output; you can queue dozens at once, with three converting in parallel.
- Review the reported size for each converted file, then download the results individually or grab them all as one ZIP.
Choosing between JPG, PNG, and WebP
PNG output is lossless and keeps transparency, which makes it the safe pick for logos, screenshots, and anything headed into an editor. JPG produces smaller files but has no alpha channel — transparent regions are flattened onto white — so it suits photos bound for forms and email. WebP usually lands smallest of all at similar visual quality, which makes it ideal when the destination is your own website. The lossy outputs are encoded at high quality (92%), visually indistinguishable from the original for photos, and nothing is resized along the way: every image keeps its original dimensions.
A converter with no server behind it
Your browser already contains decoders for every supported input format, and this tool simply uses them: each file is read inside a Web Worker, redrawn on a canvas, and re-encoded in the format you chose — all on your own hardware. No image data crosses the network at any point, which means the pictures you saved from a private conversation, a work dashboard, or a client project are never exposed to a third-party server. There is nothing to sign up for and no cap on how many files you run through it in a sitting.