Which image format should I use: JPG, PNG, or WebP?

WebP offers the best compression and smallest file sizes; use it for web images by default. JPG is universally supported and ideal for photos when maximum compatibility matters (email attachments, older devices), but it does not support transparency. PNG is lossless and supports transparency; use it for logos, icons, screenshots with text, and anything where pixel-perfect rendering matters more than file size.

Can I download all converted images at once?

Yes. After converting a batch, the Download All button packs every result into a single ZIP file that is built entirely in your browser. Where the browser supports sharing files, a Share All button also appears and passes the whole batch to the system share sheet, which is the easier route on a phone because it saves everything to Photos or Files in one step instead of downloading images one at a time.

What is a JFIF file, and can I convert it?

JFIF (JPEG File Interchange Format) is the container that ordinary .jpg files already use; a .jfif file is a JPEG that Windows or an email client happened to save with a different extension. This converter reads .jfif files exactly like .jpg files, and can also write .jfif output if you need that extension specifically. Converting JFIF to JPG changes only the file name, not the image data, so there is no additional quality loss.

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Image Converter.

Drag images in (or click to browse), pick an output format, hit convert. Each file gets its own download link. Great for batch-converting screenshots to WebP or sending PNGs to someone who needs JPGs.

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Drop images here or click to browse

JPG, JFIF, PNG, WebP, GIF, BMP · multiple files OK

// convert to // quality (85%)

// which format should I use?

WebP: best compression, smaller files. Supported in all modern browsers. Use this for web images by default.
JPG: universally supported, no transparency. Good for photos. Use when you need maximum compatibility (email attachments, older devices).
PNG: lossless, supports transparency. Use for logos, icons, screenshots with text, anything where pixel-perfect matters more than file size.
JFIF: JPEG File Interchange Format. A .jfif file is a JPEG; Windows and some email clients just save it with that extension. Picking JFIF here writes the exact same bytes as JPG, only the file name changes. Drop .jfif files in as input and they convert like any other JPEG.

Quality slider only affects lossy formats (JPG, JFIF and WebP). 85% is a good default; most people can't tell it apart from 100% but it cuts the file size by 40-60%.

Batch downloads: after converting, Download All packs every result into a single converted-images.zip. The archive is built in your browser and stored uncompressed, since JPG, PNG and WebP are already compressed and deflating them again would cost time without saving space. Where the browser supports it (phones and tablets, plus macOS and Windows desktops), a Share All button appears alongside it and hands the whole batch to the system share sheet. That is usually the better option on a phone, where browsers will not download files one after another anyway; it drops the set straight into Photos or Files.

Privacy: images are decoded into a hidden canvas in your browser and re-encoded in the new format. They never leave your device. Close this tab and they're gone.

Related: got iPhone photos in HEIC? The HEIC to JPG Converter handles Apple's format specifically (browsers don't decode HEIC natively).

// a free, browser-only tool by Tiempo Software, built in Omaha, Nebraska. Runs entirely in your browser; nothing you enter is uploaded. see all tools.