Compress Image Online
Reduce image file size directly in your browser without uploading files to a server.
Drag and drop images here
or
Supports: JPG, PNG, WebP, GIF, HEIC
Ctrl + V Paste from clipboard
Local processing · This image stays on your device
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Compression Settings
Smart Target Compression
File sizes use KiB (1,024 bytes) and MiB. Target sizes are best effort and may not be reached.
Processing and limitations
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After
ImageTiny
Compress + batchNeed faster photo compression on iPhone?
ImageTiny handles on-device compression, crop, resize, format conversion, and EXIF cleanup, with batch processing for up to 200 photos.
Best for common iPhone photo workflows like HEIC, JPG, PNG, and WebP.
Related Tools
Compress Image Online and Reduce Image File Size Faster
Reduce image file size without sending files to a server. This tool works well for website assets, blog uploads, email attachments, and everyday image cleanup.
If you need smaller image files for performance or storage, the best workflow is to preview the original, adjust quality or dimensions, and download the lighter version. Because everything runs in the browser, you get better privacy and a shorter workflow.
Reduce Image Size Online for Web Pages
Smaller images help pages load faster and use less bandwidth. Compress image size before publishing product photos, blog covers, or landing page graphics.
Reduce Image File Size for Sharing
Compress image online before sending files in email, chat, CMS uploads, or support forms where large attachments slow things down.
Compress JPG, PNG, WebP, GIF, and HEIC
Switch between quality levels and size settings to reduce image file size across the most common formats without a complicated editing workflow.
Processing and limitations
Compression may reduce image quality or dimensions. Compare the result before downloading. Animated GIFs retain animation only with GIF output.
File sizes use KiB (1,024 bytes) and MiB. Target sizes are best effort and may not be reached.
Compress Image Online Without Uploading
100% Client-Side
All processing happens directly in your browser. Your images never leave your device.
Batch Image Compression
Reduce image file size for multiple images at once, then download each file or a ZIP.
Adjust Compression Level
Control the compression level to balance visual quality and file weight.
JPG, PNG, WebP, GIF
Compress images across the most common web image formats.
How to Reduce Image File Size Online
Upload
Upload or paste the image you want to compress online.
Configure
Adjust quality, width, or height if you want to reduce image size more aggressively.
Compress
Click "Compress" to compress image size in your browser.
Download
Download the optimized image with a smaller file size.
Frequently Asked Questions
This tool compresses image online inside your browser, so your files stay on your device while you reduce image size and reduce image file size.
Yes. You can adjust quality and dimensions to compress image size while keeping a strong visual result for web, email, and documents.
You can compress image online for JPG, PNG, WebP, GIF, and HEIC files.
Yes. Batch mode lets you reduce image size online for multiple files and download them one by one or as a ZIP.
A quality setting around 75-85 usually gives a good balance between visual clarity and smaller file size for web publishing.
Start by lowering quality first. If the file is still too large after reaching quality 60, then try reducing dimensions as well.
Yes. HEIC input is supported. The tool can convert and compress HEIC files to JPG, WebP, or other formats directly in your browser.
Below 100% quality, color quantization changes pixels. At 100%, PNG encoding is lossless; resizing still changes pixels and metadata may be removed. Output is an 8-bit still PNG: APNG animation and 16-bit depth are not preserved. If the optional encoder fails, browser export may be larger. Compare the preview, dimensions and actual file size.
PNG compression: quality and transparency
PNG is a lossless file format, but reducing its color palette before encoding changes pixels. This tool uses color quantization below 100% quality. At 100% it uses lossless PNG encoding; resizing still changes pixels. Metadata may be removed. This browser workflow outputs 8-bit still PNG images; APNG animation and 16-bit channel depth are not preserved. If the optional encoder fails to load, browser PNG export may produce a larger file. Compare the preview, dimensions and measured file size before downloading.
PNG format specificationLast updated: October 11, 2026
References & Resources
Authoritative specifications and references for the file formats this tool works with.