How to Compress Images Without Losing Quality
A 2 MB photo and a 200 KB photo can look identical. Here's how to find that sweet spot — and why most people compress the wrong way.
Why file size matters
Images are the heaviest part of almost every webpage. A single uncompressed photo can add seconds to load time on a mobile connection, eat through data plans, bounce impatient visitors, and hurt your Google rankings — page speed is a confirmed ranking factor. Email attachments, marketplace listings and form uploads often have size limits too.
The quality slider is your best friend
JPEG and WebP are lossy formats: they discard image data humans barely notice. The magic is that the drop-off isn't linear. Going from quality 100 to 80 typically cuts the file size in half with zero visible difference. Going below 50 starts to show artifacts — blocky patches around edges and muddy gradients.
- 90–95% — archival, large prints, near-original quality
- 75–85% — the sweet spot for websites and sharing (most people can't tell the difference)
- 50–70% — acceptable for thumbnails and previews
- Below 40% — avoid unless it's a tiny thumbnail
Pick the right format first
Format choice often matters more than quality settings. WebP delivers files 25–35% smaller than JPEG at the same quality, and every modern browser supports it. JPEG is the safe choice when compatibility with old software matters. PNG is lossless — great for screenshots, logos and text graphics, but typically 3–5× larger than JPEG for photos. See our full format comparison.
Don't forget dimensions
A 4000×3000 photo displayed at 400×300 wastes 99% of its pixels. Resizing to the actual display size before compressing gives the biggest savings of all. Combine both: resize first with the Image Resizer, then compress.
Compress in seconds — privately
Our Image Compressor runs entirely in your browser using the same codecs built into your operating system. Drag a photo in, slide to 75%, and see the result instantly — the file never leaves your device, so even client work stays confidential.
Frequently asked questions
Is WebP better than JPEG? For web use, yes — smaller files at equal quality. For maximum compatibility with old devices, JPEG still wins.
Can I compress a PNG? You can convert it to a palette-based PNG or re-encode it, but for photos, converting to WebP or JPEG saves far more.
Will compressing remove EXIF metadata? Re-encoding usually strips most of it. For guaranteed, lossless metadata removal use the EXIF Remover.