How to Compress Images to Email a Supplier
You need to send your factory a few photos — a color reference, a packaging mockup, a shot of a defect — and your email bounces back: attachment too large. Supplier inboxes, especially overseas ones, often have tight size limits. The fix is to compress the photos before attaching them, which you can do for free in your browser.
How to compress photos for email with QuickWand
QuickWand's free image compressor runs entirely on your device, so even sensitive product photos never touch a server.
- Open the Image Compressor and drag in all the photos you want to send.
- Set Quality to 75–80%. For reference photos the supplier just needs to look at, this keeps them clear while cutting file size hard.
- Turn on Resize → Max size and cap the longest edge at around 1200–1600 px — more than enough detail for an email, far less weight than a full-resolution photo.
- Watch the live size estimate to confirm the total fits the supplier's limit, then click Download all (.zip) and attach the ZIP (or the individual files) to your email.
Why attachments get rejected
Most email services limit total attachment size to roughly 10–25 MB, and the limit applies to the encoded message, which is larger than the raw files. A modern phone or camera photo can be 4–8 MB each, so just three or four of them can blow past the cap. Compressing to a few hundred kilobytes apiece means you can attach a dozen photos and still sail under the limit.
Tips for sending product photos to suppliers
- Bundle as a ZIP. A single ZIP of compressed photos is tidier than a dozen separate attachments and less likely to be split or stripped by mail filters.
- Keep production files separate.If your factory needs high-resolution artwork for printing, share that via a cloud link, not email — and don't compress those.
- Convert odd formats first. If a photo is a heavy PNG, shrink it with the PNG to JPG converter; if it is a WebP your supplier's software may not open, use the WebP to JPG converter so they get a file that opens anywhere.