Image Compressor
Reduce the file size of JPG, PNG, WebP and iPhone HEIC images without uploading them. Set the quality, or pick a target size such as 50 KB, then download the results one by one or as a ZIP.
- Runs on your device
- No sign-up
- Free, no watermark
Guide: How to Compress Images Without Losing Quality: The Ultimate Guide (2025)
How to use the Image Compressor
- 01Drop your images into the box, paste them with Ctrl+V, or click the box to choose files (JPG, PNG, WebP, or iPhone HEIC, which is converted to JPG first).
- 02Choose Quality and set the slider (80% is a good default for photos), or choose Target size and pick 20, 50, 100, 200 or 500 KB, or type your own size in KB. Your choices are remembered.
- 03Compression starts straight away. Change a setting and finished files are redone. Turn off auto-compress if you'd rather press the button.
- 04Click the eye icon on any file to compare the original with the compressed version.
- 05Download files one at a time, or all of them as a ZIP.
Good to know
Runs on your device
Images are read and compressed by your browser. Nothing is sent to a server.
Quality or target size
Set the quality yourself, or pick a size such as 50 KB and each image is saved as a JPG under it.
Sensible limits
In Quality mode, images over 1920 px are scaled down. Target size shrinks an image only when it can't fit otherwise.
Batch download
Download every compressed image in one ZIP file.
Frequently asked questions
Are my images uploaded anywhere?
No. Compression runs entirely in your browser, and your images never leave your device. You can check this in your browser's developer tools: the Network tab shows no request carrying your files. The tool is free, with no sign-up, daily limit or watermark.
Can I compress a photo to exactly 50 KB?
Choose Target size and 50 KB. Each image is saved as a JPG at the highest quality that keeps it at or under 50,000 bytes, so it passes whether a site counts 1 KB as 1,000 or 1,024 bytes. The file usually ends up a little under 50 KB rather than exactly on it. If an exam form also needs exact pixel dimensions or a minimum size, use the Exam Photo & Signature Resizer.
Will my images be resized?
In Quality mode, images bigger than 1920 pixels on their longest side are scaled down to 1920 pixels, and smaller images keep their dimensions. In Target size mode, an image keeps its dimensions unless it can't reach the target even at low quality; then it is scaled down until it fits, and its row shows the new size.
Is photo metadata kept?
No. Camera metadata (EXIF), including location, is removed from the compressed copy. This also makes the file smaller. The exception is a file marked Already optimal: you get the file you added back unchanged.
Can a compressed file end up bigger?
No. If an image can't be made smaller, it is marked Already optimal and the original file is kept, in the single download and in the ZIP.
Which formats are supported?
JPG, PNG and WebP, plus iPhone HEIC photos, which are converted to JPG on your device first. In Quality mode each image keeps its format. Target size saves JPG, so transparent areas in PNG and WebP images become white, unless the original is already smaller, in which case it is kept as it is.