Image Compressor
Compress JPG, PNG, and WebP images in your browser. Adjust quality to balance file size and visual detail, then download individual images or save a batch as one ZIP.
Higher quality keeps more detail but may create larger files. ConvertForge will automatically try lower quality levels when needed to reduce file size.
Drop files here, browse
Supports JPEG, PNG, WebP
Max file size: 100 MB · Multiple files supported
Fully Private
Compression uses your browser's Canvas API. No image data ever leaves your device.
Quality Control
Adjust the quality slider to balance file size vs. visual detail — 75–85% is a good range for most photos.
Batch Process + ZIP
Drop multiple images at once. Compress them all and download everything as one ZIP file.
How to compress an image
- Adjust the quality slider to your preferred level — 85% is a good default for most photos.
- Drop one or more JPG, PNG, or WebP images onto the drop zone.
- Click Compress and download each file individually, or use Download ZIP to save all compressed images in one file.
Why compress images?
Large image files slow down web pages, consume storage, and are often rejected by email clients or upload forms. Adjusting image quality can reduce file size while keeping images visually sharp — making them faster to share, easier to store, and more compatible with size-limited platforms.
Common use cases include optimising images for websites and blogs, sending photos by email, uploading to social media or e-commerce platforms, and freeing up storage on your phone or computer.
Smaller output file sizes depend on the original image and the quality setting you choose. Images that are already highly optimised may not reduce significantly, and very high quality settings may occasionally produce outputs larger than the original.
Privacy — your files stay on your device
ConvertForge processes files directly in your browser using the built-in Canvas API. No image data is ever sent to a server, stored, or seen by anyone other than you. Free to use — no account, no signup.
Supported formats
The image compressor supports JPEG (.jpg, .jpeg), PNG (.png), and WebP (.webp) files. You can compress multiple files in a single batch and download all results as one ZIP.
Frequently Asked Questions
Is the image compressor free?
Yes, completely free. No account or signup required.
Are my images uploaded to a server?
No — compression runs entirely in your browser using the Canvas API. Your files never leave your device.
What quality setting should I use?
85% is a good default for balancing image quality and file size. Lower values create smaller files, while higher values keep more detail but may increase file size. Going below 60% may introduce visible compression artefacts.
Why did my compressed image get larger?
Some images are already highly optimized. ConvertForge starts with your selected quality and automatically retries lower quality levels to find a smaller output. If the result is still larger, the original image may already be near its smallest practical size.
Does the quality slider guarantee the final quality?
The slider sets the starting quality. If that setting creates a larger file, ConvertForge may automatically use a lower quality to reduce the file size. The actual quality used is shown in the result row.
Does it work on mobile?
Yes — the tool works in modern browsers on iOS, Android, Windows, Mac, or Linux.