How to compress image
- Drag and drop your image, or click to browse and select it.
- Move the quality slider to balance file size against visual quality.
- Compare the before and after file size in the live preview.
- Download your compressed image — ready to share or upload.
What you can use it for
- Shrink photos before emailing or messaging them
- Compress images for a website so pages load faster
- Get a photo under an upload limit on a form or portal
- Reduce storage used by large phone photos
Why use FlowVid Tools
- Private by default — we never store your images. They're discarded the moment you're done.
- Completely free with no watermark and no sign-up required.
- Fast — drop your image, get the result in seconds. No queues, no waiting.
Supported formats
This tool accepts JPG, PNG, WebP, HEIC, GIF as input and gives you a compressed image as output. Files are processed in seconds and never stored — we keep nothing once you have your result.
How image compression works
A photo straight off a modern phone is 3–10MB because it stores far more detail than a screen can show. JPEG compression works by discarding the detail human eyes are least sensitive to — subtle colour variations and very fine texture — and keeping everything you actually notice. That's why a photo compressed at 80% quality can be one-tenth the size of the original and still look identical in a message, on a web page or on a printed form.
This compressor gives you direct control of that trade-off. Drag the slider and the preview re-encodes instantly, so you can find the smallest file that still looks right to you — instead of trusting a server to guess.
Compress a picture without an app or upload
Most online picture compressors upload your photo to a server, process it there, and keep a copy for some retention window. This tool is different: the compression happens in your browser using your device's own processor, which makes it faster for single photos and means your image never leaves your hands. There's nothing to install, so it works the same on a laptop, an Android phone or an iPhone.
That matters most for the photos people compress most often — passport photos, signatures, ID documents and job-application pictures. A photo compressor you don't have to trust is better than one you do.
Need an exact file size instead?
Government portals, exam forms and job sites don't ask for "smaller" — they ask for "under 50KB" or "20KB to 100KB". Guessing with a quality slider until you land under the cap wastes time, so we built dedicated exact-size pages: pick your target (5KB up to 2MB) from the list at the bottom of this page and the tool automatically finds the best quality that fits. Your photo comes out at the required size on the first try.