Why you need an image compressor
A single phone photo can be 4–8 MB. Emails bounce over the attachment limit, websites load slowly, and social platforms resize your images anyway. Compressing reduces file size dramatically while keeping the picture looking the same to the human eye.
What makes a good image compressor?
- Big savings — a 60–90% size reduction at good visual quality.
- Presets — quality sliders or profiles instead of arcane settings.
- Batch support — compress many images at once.
- Privacy — files processed locally, not uploaded.
- No watermarks or limits — genuinely free.
The 2026 lineup (compared)
| Tool | Type | Best for | Caveats |
|---|---|---|---|
| Document Toolkit Compress Image | Browser | Privacy, no limits, JPG/PNG/WebP | Uses your device's power |
| TinyPNG | Web service | Developers, API | Uploads files, 20-image limit |
| Squoosh | Open-source web app | Advanced WebP/AVIF control | Google project, no batch |
| iloveimg | Web service | Batch jobs | Watermark + limits on free tier |
The winner: your browser
For most people the best compressor is the one that doesn't upload their files. Our free Compress Image tool runs entirely on your device, handles JPG, PNG, and WebP, lets you compare quality before saving, and has no daily limits. Upload-based services cap free usage and add watermarks — browser tools don't.
How to compress an image in seconds
1.Open the Compress Image tool.
2.Upload or drop one or more images.
3.Drag the quality slider and preview the result.
4.Download the compressed files.
If you need a different output format, convert first with Convert Image, then compress.
Frequently asked questions
- What's the best format for small file size? WebP usually gives the best quality-per-byte for photos; use it for the web.
- Can I compress without losing quality? Yes — at 80–85% quality the difference is invisible on most screens.
- What's the limit on the free tool? There is no limit; it runs in your browser.