Overview
Photos are the heaviest things most people put on the web, and most of them are heavier than they need to be. A phone snapshot saved at maximum quality can be several megabytes — far more than a screen can show — which means slow pages, eaten data allowances and uploads that crawl. Compression trims the invisible excess: the fine detail no eye can see at display size.
This tool compresses right where the image already is — in your browser. Drop a file or click to browse, drag the quality slider and watch the projected size respond, choose whether to keep the original format or switch to JPEG or WebP, and download when the numbers look right. No queues, no accounts, no expiring links.
How does image compression work?
Image formats shrink files in two ways. Lossless methods (like PNG for graphics) reorganise data without discarding anything; lossy methods (JPEG, WebP) deliberately throw away detail the human eye barely registers — subtle colour gradients, ultra-fine texture — and the quality slider controls how aggressively. Lower quality means a smaller file and, past a point, visible artefacts.
The trick is that “visible” depends on context. A photo shown at 800 pixels wide can lose half its data before anyone notices; the same file printed poster-size cannot. Compress for the destination: aggressive for web thumbnails and listings, gentle for anything that might be zoomed, printed or archived.
Features
- Quality slider with a live projected file size as you drag.
- Format choice: keep the original, or convert to JPEG or WebP.
- Before/after size readout showing exactly what you saved.
- Drag-and-drop or browse — JPG, PNG, WebP and most browser-readable formats.
- Visual preview so you can judge quality before downloading.
- Private by design: the file never leaves your tab.
Benefits
- Faster pages and uploads. Smaller images load quicker everywhere.
- See the trade-off live. Size and quality side by side, no guessing.
- No waiting room. Compression starts the instant the file loads.
- Your photos stay yours. Nothing uploaded means nothing to leak.
Who can use it
Bloggers and shop owners shrinking product photos, anyone emailing pictures over a slow connection, students submitting portfolio work with file-size limits, and developers optimising assets before a deploy. If you have ever watched an upload bar crawl, this is the faster way.
How to use
- Drop an image onto the panel or click to browse for one.
- Drag the quality slider and watch the projected size change.
- Pick the output format — JPEG for photos, WebP for the smallest files.
- Check the preview to confirm the quality looks right.
- Download the compressed image.
Frequently asked questions
What quality setting should I use?
For photos on the web, 70-80% is the sweet spot — dramatically smaller with no visible change at normal viewing sizes. Thumbnails and listings can go to 60%. Keep 90%+ for anything that might be printed, zoomed or cropped later. The preview exists so you can judge with your own eyes rather than trusting a number.
JPEG or WebP — which is better?
WebP usually wins on size, often 25-35% smaller than JPEG at similar quality, and every modern browser displays it. JPEG remains the safer choice when the image might be opened in old software or emailed to anyone. For graphics with sharp edges and text, PNG (lossless) beats both.
Will compression damage my original photo?
No. The tool reads your file and produces a new, separate download — the original on your device is never modified. That said, treat compression as one-way: always keep the high-quality original archived, and compress copies for each destination.
Why is my PNG barely shrinking?
PNG is lossless — the quality slider applies to lossy output. If you chose PNG output, the file stays large by design. Switch the output to JPEG or WebP for photos and watch the size collapse. PNG is the right format for screenshots, logos and graphics, not for photographs.
Is there a file size limit?
Only your device's memory. Since everything runs locally, there is no server enforcing a cap — but very large images (dozens of megapixels) can take a moment to decode. For typical phone and camera photos, it is instant.
Where does my image go?
Nowhere. It is decoded, recompressed and offered for download entirely within your browser tab. No upload, no server processing, no copy retained — close the tab and it is as if the image was never here.
Conclusion
Big photos, small files, zero uploads. Drag the slider until the size looks right, check the preview, download — and enjoy the faster page.