Compress image online - free, private, no signup
Make photos and screenshots smaller without visible quality loss. Add one or many JPG, PNG or WebP images, choose a quality level, and see exactly how much each file shrinks. Everything happens in your browser, so your pictures are never uploaded.
Drag and drop JPG, PNG or WebP images here, or click to choose. You can add several at once.
Your files never leave your device.
How to compress image
Add your images. Drop JPG, PNG or WebP files onto the tool, or click to choose them. You can add many at once.
Pick the quality. Move the quality slider (70 to 80 is a good start) and optionally choose to save as JPG or WebP for bigger savings.
Compress and download. Click Compress. Review the before and after size of each image, then download them one by one or all together as a ZIP.
Why Toolbyte
- Private: your images are compressed in your browser and never uploaded.
- Free with no signup, watermark or daily limit.
- Batch compression: handle a whole folder of photos in one go and download a single ZIP.
- Phone photos keep the right way up, even when they carry a rotation tag.
- If a file cannot be made smaller, the original is kept instead of a bigger copy.
Frequently asked questions
How do I compress an image without losing quality?
Use a quality of about 70 to 80 percent. At that level JPG and WebP images look almost identical to the original but are often 50 to 80 percent smaller. Check the before and after sizes shown after compression.
Is it safe to compress my photos here?
Yes, because your photos never leave your device. Toolbyte compresses them inside your browser, so nothing is uploaded and we cannot see your files.
Can I compress PNG images?
Yes, but PNG is a lossless format, so it cannot be shrunk with a quality slider. For much smaller files, choose to save PNG images as JPG or WebP. Transparent areas become white when saving as JPG.
Can I compress many images at once?
Yes. Add as many images as your device can handle, compress them together, and download them all as one ZIP file.
Why is my compressed image not much smaller?
The image was probably already well compressed. In that case Toolbyte keeps your original file rather than giving you a larger one. Lowering the quality or saving as WebP usually helps.
Do I need to compress to an exact size such as 50 KB?
Use the dedicated pages instead. They search for the best quality that fits under a limit, for example 50 KB or 100 KB, which is common for forms and job applications.