Compress Images Online — Reduce JPG, PNG & WebP File Size
Reduce the file size of JPG, PNG, WebP and HEIC photos in bulk, with a quality slider and before/after sizes.
Free, with no sign-up and no watermark. The file is processed in your browser and never uploaded.
Make photos smaller for email, websites and uploads without sending them anywhere. Add one image or a whole batch, choose a quality level, and see exactly how much each file shrank.
For the biggest savings on large camera photos, also limit the longest side — a 4000-pixel photo resized to 1920 pixels is usually a fraction of the size. Need a hard limit like 100 KB? Use Compress Image to KB instead.
Step by step
- Add your images: Drop one or more photos onto the upload area, or click to browse.
- Pick a format: Keep Same as input, or switch to JPG or WebP — WebP is usually the smallest.
- Set the quality: Drag the Quality slider. 70–80% looks almost identical to the original for most photos.
- Optionally limit the size: Choose a maximum longest side such as 1920 px to shrink very large photos further.
- Compress: Click Compress Images. One image downloads directly; several come as a ZIP, with a before/after table.
Handy for
Email attachments
Bring a set of phone photos under your mail provider’s attachment limit.
Faster websites
Smaller images load quicker and help page-speed scores.
Online forms
Get scans and photos under an upload limit (or use the exact-KB tool).
Saving storage
Shrink an archive of old photos before backing it up.
Good to know
PNG is lossless, so on its own it can’t shrink much. Convert screenshots to WebP, or resize them.
If a compressed file would be larger than the original, the original is kept, so you never lose out.
Compressing an already-compressed JPG again saves little and slowly lowers quality — start from the original where you can.
Questions
Are my photos uploaded anywhere?
No. Every image is opened and processed inside your browser on your own device. Nothing is sent to a server, and closing the tab discards everything.
Will the photo look worse?
At 70–85% quality most people can’t see a difference on screen. Lower settings show blockiness in skies and gradients; use the preview to judge.
Why did my PNG barely change?
PNG stores every pixel exactly, so there is nothing to throw away. Switch the format to WebP or JPG, or limit the longest side.
Which image formats can I use?
JPG, PNG, WebP, AVIF, GIF (first frame), BMP, TIFF, SVG and iPhone HEIC/HEIF photos. Photoshop PSD files work when they were saved with a flattened preview ("Maximize compatibility").
Further reading
- Resize vs Compress an Image: Which One Do You Need? — Resizing changes an image's pixel dimensions; compressing keeps them and cuts the KB. Learn when to use each, when to do both, and social media sizes.
More Image Editor tools
- Compress Image to KB — Make a photo fit an exact size limit such as 20 KB, 50 KB or 100 KB for online forms, with an optional minimum size too.
- Resize Image — Resize photos to exact pixels, centimetres, millimetres or inches at any DPI, or by percentage, one or many at a time.
- Crop Image Online — Crop a photo by dragging a box or typing exact pixels, with presets for 1:1, 4:5, 16:9 and more.
- Circle Crop Image — Cut a perfect circle out of any photo for profile pictures and avatars, saved as a transparent PNG.
- Rotate Image — Rotate photos by 90°, 180°, 270° or any custom angle, in bulk, without cutting anything off.
- Flip Image — Mirror photos left-to-right or upside down, one image or a whole batch at once.