Compress Image Online Free

Most image compressors ask you to set a quality percentage, which means you have to guess-and-check until the output is small enough. ToolKB works the other way around: you tell it the target size (e.g. 50KB), and it automatically compresses the image toward that limit while preserving as much visual quality as the target allows.

The compressor accepts JPG, PNG, and WebP on all browsers. HEIC files (iPhone camera photos) can be processed if you are on Safari, which decodes HEIC natively. On Chrome, Firefox, or Android browsers, HEIC will not decode: convert your HEIC photo to JPG first using ToolKB's free HEIC-to-JPG converter (toolkb.in/heic-to-jpg), then compress the resulting JPG. The output is always a JPEG file for maximum portal compatibility.

Use the custom target field on the compressor interface to enter any KB value from 1KB to 10,240KB (10MB). The preset buttons cover the most common upload form requirements like 20KB, 50KB, and 100KB.

No. Your image is never uploaded anywhere. The entire compression process runs entirely inside your browser tab using standard web technologies. You can verify this by opening your browser's Network tab while compressing, you will see zero outgoing file transfers.

Files up to 10MB can be processed. Guest users (no login) get 3 compress downloads per day. Free accounts get 10 compress downloads per day. Pro plans offer 100 per day, and Business plans offer 500 per day. Limits reset at midnight India time. Heavy file tools like compress, PDF, video, and background removal have daily limits. QR code generator, resize, convert, favicon, and form checker preview are always free with no limit. If you reach the limit, you can log in for a free account, choose a paid plan on the pricing page, or wait until the next day.

No. All tools work without an account. Guests get 3 compress downloads per day and 2 PDF downloads per day. Creating a free account raises those limits to 10 compress and 10 PDF downloads per day. For higher volume needs, Pro offers 100 per day and Business offers 500 per day. QR code generator, resize, convert, favicon, and form checker preview are free for everyone with no daily limit.

Guests (no login) get 3 image compress downloads per day. Free accounts get 10 per day. Pro accounts get 100 per day, and Business accounts get 500 per day. The count resets at midnight India time. Check your account page to see today's usage.

You will see a message saying your downloads for that tool have reset at midnight India time. You can wait for the reset, log in for a free account if you are currently a guest, upgrade on the pricing page, or use a tool that has no limit, such as the QR code generator or resize tool.

No. Your files are processed entirely in your browser. They are never uploaded to our servers. Supabase stores only your account ID or device ID, the calendar date, the tool category such as compress or PDF, and a download count. No file names, file contents, photos, or PDFs are ever stored.

For portrait-style photos compressed to 50KB or above, the quality difference is barely noticeable. At 20KB, faces remain recognizable though fine background detail may show some softening. At very small targets (under 15KB), some quality loss is unavoidable.

Yes. ToolKB is fully designed for mobile use. You can select a photo directly from your gallery or take one with your camera. The compressor works natively in mobile Chrome, Safari, and other modern browsers.