Why reduce image file size?
As phone cameras improve, a single photo routinely exceeds 5–10MB. Uploading images that large to a blog or store slows the page down, and visitors leave while they wait. Search engines also rank slow pages lower. Reducing size isn't just tidying up — it directly affects speed and visibility.
The quality slider does the heavy lifting
Compression removes data your eye barely notices. Most photos look virtually identical at 70–80% quality. Above 90% the file barely shrinks; below 50% the loss becomes visible. For typical web uploads, around 75% is the best starting point.
Compresión de imagenReduce JPG, PNG y WebP sin pérdida visible de calidad.Pruébalo ahoraResizing the width helps a lot
Resolution matters as much as quality. Scaling a 4000px original down to your blog's content width (usually 1000–1600px) keeps the perceived quality while cutting size several times over. For screens rather than print, limit the width to 1920px or less.
Format choice changes the size too
The same image varies in size depending on format. Use JPG for photos, PNG when you need transparency, and WebP for a smaller file at the same quality. For when to use each, see our JPG vs PNG vs WebP guide.
Size-reduction checklist
- Trim empty margins first with the crop tool
- Cap screen images at 1920px wide
- Start at ~75% quality and check by eye
- Use JPG instead of PNG when you don't need transparency
- Compress multiple images in one batch
You can do all of this for free in your browser. Files are never uploaded, so even personal photos stay private.