How to compress an image
- Drop one or more images into the box above, click to browse, or paste a screenshot with Ctrl+V.
- Adjust the quality slider. 70–80 is the sweet spot: files get much smaller with no visible difference.
- Click Download for a single file, or Download all to get every image in a ZIP.
What does “Auto (smallest)” do?
Auto keeps JPG and WebP files in their original format and re-encodes them at the quality you choose. PNG files are converted to WebP, which keeps transparency but is usually 50–80% smaller. If a file is already well optimized and the result would be larger, ToolSmith keeps your original so you never end up with a bigger file.
Tips for smaller images
- Resize first. A 4000 px wide phone photo shown at 1200 px on a website wastes over 90% of its pixels. Set a max width to cut size dramatically.
- Use WebP for websites. All modern browsers support it and it beats JPG at the same quality.
- Keep PNG only for graphics. Logos, icons and screenshots with text stay crisp as PNG; photos belong in JPG or WebP.
Frequently asked questions
Are my images uploaded to a server?
No. ToolSmith processes every image locally in your browser. Your files are never uploaded, stored or seen by anyone — you can even disconnect from the internet after the page loads and the tool keeps working.
Will compressing reduce image quality?
Compression removes detail your eyes are unlikely to notice. At quality 70–80 most photos look identical to the original while being several times smaller. Raise the slider if you see artifacts.
How much smaller will my images get?
Typical phone photos shrink by 50–80%. Screenshots saved as PNG often shrink even more when converted to WebP. Images that are already optimized may not get smaller — in that case we keep the original.
Can I process many images at once?
Yes. The free version handles up to 20 images per batch, and you can download them all as a single ZIP file. ToolSmith Pro removes the limit.
Does it work on my phone?
Yes. It works in any modern browser on Windows, macOS, Linux, iPhone, iPad and Android — there is no app to install.