See the trade-off before you save
- Slide the quality and watch the file size change as you go.
- Compare before and after side by side.
- Read a quality-versus-size chart to find the sweet spot.
- Aim for a target size, such as 200 KB (best effort).
- See the savings per image and in total.
How to compress images
- Open the Compress tool and add your images or a folder.
- Set the quality, or a target size, and check the preview.
- Choose where to save and start. A progress bar shows each file.
- Compressed copies are saved to your folder; your originals are not changed.
PNG is a lossless format, so quality cannot be reduced the same way as in JPEG. MyPixelGuard tells you clearly when that is the case instead of promising savings it cannot deliver.
Compress privately
Online image compressors receive a copy of every file you upload. MyPixelGuard works offline, so personal photos and unpublished work stay on your computer. Smaller files also tend to carry less hidden data once you clean the metadata — you can do both in one recipe.
You may also want to resize images to the exact dimensions you need.
Frequently asked questions
Does compressing reduce image quality?
For lossy formats such as JPEG, lower quality means smaller files. MyPixelGuard shows a before/after preview and the size change so you choose the balance.
Can I compress a whole folder?
Yes. Batch compress shows progress and the total savings, and never overwrites existing files.
Is anything uploaded?
No. Everything runs on your own computer and works offline.
More guides
- How to remove EXIF and GPS data from photos
- Best EXIF and photo metadata remover tools, compared
- An offline background remover — a private alternative to remove.bg
- A metadata remover tool for photos — see it, then remove it
- Remove AI watermark data from photos: what you can and can’t remove
- An offline image resizer for Mac and Windows
- A background remover that keeps your quality — and your privacy