About this tool
Prepare a smaller version of a photograph or scan before adding it to a listing, document or web page. Compare JPEG and WebP output using your own image rather than relying on the built-in size estimate.
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
मुख्य इनपुट और नियंत्रण हिंदी में देखने के लिए ऊपर “🇮🇳 हिंदी में देखें” चुनें। गणना और फ़ाइल प्रोसेसिंग इसी ब्राउज़र टैब में होती है; टूल आपके इनपुट हमारी होस्टिंग पर नहीं भेजता।
Features
- Encode the selected image as JPEG or WebP when the browser supports the selected encoder.
- Adjust quality and compare the actual processed dimensions and byte size.
- Keep the original while trying a different quality or output format.
Benefits
- Compare the saved file size with the original before replacing it.
- Balance visible detail against a smaller download or upload.
- Keep the original image while trying different quality settings.
Who should use this tool?
- Sellers preparing product photographs.
- People reducing scan size for an upload.
How to use
- Choose the actual image you want to compress; the numeric example alone is only a size estimate.
- Choose JPEG or WebP output and adjust the quality value.
- Wait for the ready message, download, and check file size and visible detail. Try another setting if needed.
Try these worked examples
| Scenario | Example inputs | Example result |
|---|---|---|
| Compress 1,200 KB Product Photo @ 75% WebP (~270 KB) | Original Image Size (KB — or upload file below): 1200Target Compression Quality (10% to 95%): 75Output Format: WebP (Smallest File Size — Best for Web/E-com) | ~270 KB (Saves 77.5% from 1200 KB) |
| Compress 850 KB Document Scan @ 60% JPEG (~230 KB) | Original Image Size (KB — or upload file below): 850Target Compression Quality (10% to 95%): 60Output Format: JPEG / JPG (Universal Portal Compatibility) | ~214.2 KB (Saves 74.8% from 850 KB) |
Reference and processing
HTML5 Canvas.toBlob(mime, quality) Lossy/Lossless Compression
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
FAQs
Can I guarantee an exact file size in KB?
The quality setting influences encoding but does not promise an exact byte count. Upload the real image, check the saved size and adjust quality or dimensions if needed.
Which inputs do I need for Image Compressor (JPG, PNG & WebP Quality Slider + Local Canvas)?
Use Original Image Size (KB — or upload file below); Target Compression Quality (10% to 95%); Output Format. The built-in examples show how those fields fit together.
What should I check before using this result?
Actual encoded size depends on the source pixels, format and quality. A specific KB target is not guaranteed. Large images can exceed the browser’s available canvas memory. Keep the original file. Check the saved format, dimensions, page order and content before replacing or sharing a document.
What happens to the information I enter?
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server. Tool favourites save only tool IDs in this browser. Sharing sends the tool link, not your working values or files.