🗜️Bulk Image Compressor

Compress product images to a size that uploads and loads fast

A modern phone or DSLR saves photos at 4–12 MB each. Daraz refuses anything over 3 MB, TikTok Shop stops at 5 MB, and a collection page with twenty 4 MB images takes ages to load on mobile data. The Bulk Image Compressor shrinks a whole folder at once, either to a target such as "under 500 KB" or to a quality level you choose, and shows the savings per file.

How it works

1. Drop your JPG, PNG, WebP or HEIC images.
2. Choose a mode. Target size takes a number in KB or MB and finds the highest quality that stays under it. Quality gives you a slider from 10 to 100 for manual control.
3. Pick the output: JPG for photos, WebP for your own website, PNG when transparency must survive.
4. Optionally cap the longest side, for example 2000 px, so oversized originals are scaled down as well.
5. Read the before and after sizes and the percentage saved on each card, then download all as a ZIP.

Target mode uses a binary search: it encodes at a mid quality, checks the byte count, and narrows the range, so it reaches the budget in about six to eight quick encodes per image. Everything runs in Web Workers, so a batch of 100 photos does not freeze the page.

Why it matters

Those are the hard ceilings; the practical target is much lower. A 2000×2000 JPG at 80–85% quality is usually 250–500 KB and looks identical to the 3 MB original at listing size. On your own storefront, every 1 MB trimmed from a product page is roughly a second saved on a 3G connection, and page-experience signals reward it. A compress jpg to 500kb rule for hero images and 200 KB for thumbnails is a sensible default.

Tips

• Quality 80–85 is the sweet spot for JPG; below 60 you start to see blocky artefacts around edges and text.
• Do not compress an already compressed file a second time at a lower quality; go back to the original whenever you can.
• Combine a target size with a 2000 px maximum dimension. Most excess bytes come from pixels nobody sees, and the Bulk Image Resizer is the right tool if you only want to change dimensions.
• PNG output is lossless, so the target-size search cannot help much; convert photos to JPG with the Image Format Converter instead.
• Camera JPEGs carry 20–100 KB of EXIF, thumbnails and colour profiles. The EXIF Metadata Remover strips it, and this compressor already drops it when re-encoding.
• For an exact small target like 50 KB or 100 KB for a government form, use the Photo Size Reducer to Exact KB, which also scales dimensions down when quality alone cannot get there.

Privacy

This is a compress images online tool with no server: your images never leave your browser. Decoding, the quality search and ZIP creation all happen on your device, so unreleased product photos and customer images stay private. Read the Daraz image guidelines and the TikTok Shop image rules for the two strictest caps.