How to reduce image size
- Drag and drop your image, or click to browse and select it.
- Use the quality slider to balance file size against visual quality.
- Preview the before and after file size instantly.
- Click download to save your compressed image.
What you can use it for
- Speed up a website by shrinking large photos
- Make images small enough to email or message
- Free up storage on your phone or computer
- Meet upload size limits on forms and portals
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.
Why reduce image file size?
Large images are the number-one cause of slow web pages. A single uncompressed photo from a modern phone can be 5–10MB, which is enough to make a page crawl on mobile data. Compressing that image down to a few hundred kilobytes can cut your page load time dramatically and improve your Google ranking, because page speed is a confirmed ranking factor.
Smaller images also matter outside the web. Email providers cap attachments, messaging apps re-compress anything you send, and government or job portals frequently reject files over a set size. Reducing the size first puts you in control of the quality instead of letting another service degrade it.
Reduce image size in KB to an exact limit
When a form quotes a hard limit — 20KB, 50KB, 100KB — you need the file under that number, not just 'smaller'. This reducer lets you lower the quality until the live size fits, and for a precise target you can use the exact-size compressors linked below, which find the best quality that still lands under the KB figure automatically.
The general rule: reduce the quality first, and if the file is still too big, reduce the pixel dimensions as well. A photo destined for a small on-screen box rarely needs to be more than 800–1000 pixels wide, and shrinking the dimensions is often what finally gets a stubborn file under a tight KB cap.