Image Tools
Image Compressor
Re-encodes the image with canvas at the quality and format you pick, shows before and after sizes, and never uploads the file.
Image Tools
Image Compressor / Image Resizer
Compression changes encoding quality at the same pixel dimensions — smaller file, lossy. Resizing changes the pixel dimensions, and per-pixel quality is then whatever the output quality setting allows. Both re-encode, so both let you pick a format and both accumulate generational loss in JPEG and WebP.
| Image Compressor | Image Resizer | |
|---|---|---|
| Changes pixel dimensions | No, width and height stay | Yes, target width and height |
| Primary effect | File size, quality 0–100 | Displayed size and file size together |
| Image quality | Lossy, compounds with repeats | Upscaling adds no detail; downscaling resamples |
| Defaults | Quality 80, JPEG output | Fields filled with source size, ratio locked |
Image Tools
Image Resizer
Resamples to a target width and height; with the aspect ratio locked, changing one side recalculates the other from the source ratio so nothing stretches.
Image Tools
When to use Image Compressor
- The size is right but the file is too big: web images, email attachments, upload limits.
- You need a screenshot or photo under a byte budget without changing its dimensions.
- A detected alpha channel makes you weigh PNG against JPEG.
When to use Image Resizer
- The dimensions are wrong: an overlong screenshot, an image overflowing its container, a required resolution.
- You need to halve it or bring it up to a specific width.
- Preparing responsive images at several widths.
Verdict
Over the size budget: compress. Wrong dimensions: resize. When both are needed, **resize first, then compress** — the other order loses quality and then magnifies the loss.
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