Image Compressor & Resizer
A free tool to shrink, compress, and resize images right in your browser. Adjust the size with a scale slider or by entering the width in pixels, then save as JPEG, PNG, or WebP. Your image is never uploaded — everything is processed locally.
Notes
- Processing may take a moment for large images.
- Your image is never uploaded to any server.
- Closing or refreshing the page will clear the image — no worries about privacy.
- Only image files can be selected.
How to Use
- Select an Image
- Click “Select Image” to load a file (JPEG, PNG, GIF, etc.). Non-image files cannot be selected.
- Adjust the Scale
- Drag the slider or type the width in pixels to set the output size from 1% to 100%. The pixel dimensions and estimated file size update in real time.
- Set File Name & Format
- Rename the file if you like, and choose JPEG, PNG, or WebP. JPEG is best for photos — use the quality slider to fine-tune compression. PNG is better for illustrations and transparency. WebP offers modern high compression for supported browsers.
- Save the Image
- Click “Save Image” to download the resized file. All processing happens entirely in your browser.
Two Ways to Make an Image Smaller (Resize vs. Compress)
There are two main ways to reduce an image’s file size (KB / MB): resizing and compressing. This tool supports both, and combining them lets you cut the file size dramatically.
Method 1: Resize to reduce pixel dimensions
Resizing reduces the actual width and height of the image in pixels. Set a scale from 1% to 100% with the slider, or type the exact width in pixels. If the image will be displayed at a fixed size — on a blog or social media — shrinking it to the size you need is the most effective approach.
Method 2: Compress to reduce data size
Compression keeps the visible dimensions unchanged and reduces the data size by adjusting JPEG quality. At 70–85% quality, the file size drops significantly with almost no visible loss. For even smaller files, try saving as WebP.
Recommended sizes by use case
- Blog / website images: 800–1200 px wide, JPEG quality around 80%
- Social media posts: around 1080 px wide
- Email attachments / document submissions: 600–800 px wide, under 1 MB total
- Thumbnails / icons: 100–300 px wide
Frequently Asked Questions
- How do I get an image under a specific file size (KB)?
- Lower the resize scale, or choose JPEG and adjust the quality slider. The estimated file size updates every time you change a setting, so you can fine-tune until it fits your target.
- Can I reduce the file size without losing quality?
- Choose JPEG and set the quality to 70–85%. For photos, the difference is barely visible while the file size shrinks considerably. WebP offers even higher compression for supported browsers.
- Does it work on smartphones (iPhone / Android)?
- Yes. No app install or sign-up is required — it runs entirely in your browser. Since images never leave your device, you can safely shrink photos taken on your phone.
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