Image Compressor — Free Online Tool
Re-encode photos as JPG, WebP or PNG at a quality you choose
Compress JPG, PNG, WebP images in your browser. No upload to server. Fast, free, no watermarks.
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Free image compressor — JPG, PNG, WebP in your browser
Toololis Image Compressor reduces file size without uploading anything. All compression happens in your browser using the Canvas API. Choose JPG for photos, WebP for modern sites (30–50% smaller), or PNG for graphics. Compare before/after sizes instantly.
When to use which format
- JPG — Photos. Universally supported. Typical 70–85% quality is invisible.
- WebP — Everything, modern browsers. 30–50% smaller than JPG at same quality.
- PNG — Logos, screenshots, anything with transparency or crisp edges.
- AVIF — Best compression of all. Newer — check browser support for your audience.
How to use this tool
- 1
Drop or pick an image
Drag any JPG, PNG, or WebP onto the drop zone — or tap to open your file picker. Multiple images work too.
- 2
Adjust quality
Slide between 10% (tiny, lower quality) and 100% (max quality, less compression). 80% is usually invisible to the eye.
- 3
Download compressed
Click Download to save the compressed version. Compare original vs compressed size in the stats box.
How much can you compress?
- Untouched JPG from phone — Usually 2–5 MB, can drop to 500 KB at quality 80
- PNG screenshot — 1–3 MB, converting to JPG at 85 drops to 100–300 KB
- DSLR photo — 15–40 MB raw, JPG export at quality 90 is 3–8 MB
- WebP vs JPG at equivalent quality — 30–50% file size reduction
Frequently Asked Questions
Are my images uploaded somewhere?
What compression algorithm do you use?
Why is my PNG output larger than JPG?
Can I batch-compress multiple images?
What quality should I pick?
Does this support WebP / AVIF?
Key Takeaways
- Image Compressor is a free, browser-based image tool — re-encode photos as jpg, webp or png at a quality you choose.
- No signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Image Compressor
- Open the tool: Launch Image Compressor on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Image Compressor — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- Processed in your browser. Tools that need an outside service say so on the page. Page views are counted (Google Analytics).
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Image Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Image Compressor |
| Category | Image |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Image Compressor?
You should try Image Compressor for a quick, private way to re-encode photos as jpg, webp or png at a quality you choose. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.