Image Compressor

Choose a mode — Single Image or Bulk — then drag in your files or click to browse. You can mix JPG, PNG, HEIC, and more in one batch.

Set quality and format — use the slider (75% is the sweet spot) and pick an output format: JPEG, PNG, WebP, BMP, ICO, or Auto to keep the original.

Compress — in Bulk mode click "Compress All Now"; each image shows its new size and how much was saved.

Download — save files one by one, or click "Download ZIP" to grab the whole batch in one folder. ```

Largely, yes. At around 75% quality, JPEG and WebP drop most of the file size by discarding detail your eye doesn't notice, so the picture still looks sharp. It's technically lossy, not pixel-perfect, but the difference is usually invisible on screen. For graphics or logos that must stay exact, use PNG, which keeps edges crisp while still shrinking the file.

Lower the quality slider and re-compress until the new size, shown next to each image, drops under your target. Start at 75% and step down; switching the output format to WebP usually gets you under a tight KB limit fastest. If it's still too big, the dimensions are likely the cause — resize the image smaller first, then compress.

No. Compression reduces the file size (the KB or MB on disk) by re-encoding the image, but the width and height in pixels stay the same. If you also need fewer pixels — for example to fit a 1200px-wide blog layout — resize the image first with the Image Resizer, then run it through the compressor for the smallest possible file.

Use WebP for websites — it produces the smallest files while staying clear. Use JPEG for standard photos that need to open in older software. Use PNG only when you need a transparent background, like a logo cutout. BMP and ICO are there for specific needs (ICO is for favicons), and Auto keeps each file in its original format while still compressing it.

Yes. Switch to Bulk Images mode, drag in a whole folder, and click "Compress All Now." Each image shows its own size saving, and a running "Total Space Saved" counter adds them up. When you're done, click "Download ZIP" to get every compressed image in a single folder instead of saving them one by one.

No. The compressor runs entirely in your browser using your device's memory, so your files are never sent anywhere. Once you close the tab, nothing remains. That makes it safe for private or sensitive photos and means it keeps working quickly even on a slow or metered connection, since there's no upload or download to a server.

There's no artificial cap or paywall — you can process a single photo or a large batch. The only real limit is your device's memory, because the work happens locally. Loading hundreds of very large files at once can slow your browser, so if it stutters, compress them in smaller groups rather than all in one go.

Yes. You can drop HEIC files straight in alongside JPGs and PNGs, and compress them in the same batch. If your goal is mainly to make iPhone photos openable everywhere rather than smaller, set the output format to JPEG or WebP so the result works on any device and in any browser, not just Apple software.

Start at 75%. That's the sweet spot where the file size drops sharply but the image still looks crisp. Going above 85% saves little space; dropping below 50% can introduce fuzzy edges or blocky colour, especially in photos with gradients or fine detail. Compress, check the preview, and only lower the slider further if the result still looks good to you.

Yes. Large, unoptimised images are one of the most common reasons pages load slowly, and slow pages frustrate visitors and hurt search rankings. Compressing images cuts that weight dramatically, so pages render faster — especially on mobile. For best results, resize images to the dimensions they'll actually display at first, then compress to shave off the rest.

Only if you keep the image in PNG (or WebP) format. PNG and WebP both support transparency, so a logo or cutout stays see-through after compression. If you convert a transparent image to JPEG, the transparent areas are filled with a solid colour, because JPEG has no transparency. Choose PNG or WebP as the output format when transparency matters.

Yes. The compressor runs in your phone's browser with no app to install, so you can shrink photos on Android or iOS before emailing or uploading them. Single images and small batches work smoothly; very large batches use more memory and run more comfortably on a laptop, but everyday phone photos compress quickly on the device itself.