How to Compress Images for the Web (Free Browser Guide)
Compress images for the web without wrecking quality. Free browser steps for JPG, PNG, and WebP—resize first, then compress, then verify.
The web doesn’t need 12MP blog photos
A phone photo can be 5–15 MB. Your article layout may display it at 800–1200px wide. Shipping the full sensor resolution wastes bandwidth and hurts Core Web Vitals.
Fast free workflow
1. Resize to display size
Open Resize Image and set a sensible max width (for example 1600px for large heroes, 800–1200px for in-article images).
2. Compress
Open Compress Image. Start with a balanced quality setting; increase compression only if the file is still heavy.
3. Privacy pass (optional)
Strip location metadata with Remove EXIF metadata before publishing personal photos.
Targets that work in practice
| Use | Dimension guidance | Notes |
|---|---|---|
| Blog hero | ~1600–2000px wide | Compress after resize |
| Thumbnail | Exact crop size | Don’t upscale |
| Avatar | Platform size | Light compression only |
| Transparent logo | Keep PNG/WebP alpha | Check edges |
Common mistakes
- Compressing before resizing
- Saving a screenshot as a huge PNG when JPG/WebP is fine
- Re-uploading the same compressed asset into another compressor repeatedly
- Ignoring text legibility in UI captures
FAQ
Is this a TinyPNG alternative?
For free one-off compression in the browser, yes—it’s a practical alternative. See TinyPNG alternatives.
Lossy vs lossless?
Lossy (most web photo compression) removes detail for smaller files. Lossless keeps every pixel—often larger than you want for photographs.
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