Free Online Image Compressor
Make JPG, PNG and WebP images smaller in your browser. Choose the quality, maximum size and output format, compare before and after, then download. Free, no signup, and the image isn't uploaded.
Need a set file size? Compress to an exact KB · Several files? Bulk compressor · All tools
Your images stay on your device. Nothing is uploaded.
Supported formats and how processing works
- Files you can open
- JPG, PNG and WebP, up to 25 MB each. iPhone HEIC/HEIF photos open only in the HEIC to JPG converter. PDFs open in the PDF to image tool.
- Files you can save
- JPG, PNG and WebP. WebP and AVIF output depend on your browser's encoder (in our tests, Chrome could not create AVIF). If your browser can't produce the format you picked, the tool tells you instead of saving a different format under the wrong file extension.
- Where the work happens
- In your browser, using its built-in canvas image encoder. The tools contain no upload step, so your image is not sent to our server. Our analytics (Google Analytics with Consent Mode) records usage numbers such as file size and format, never the image itself.
- What changes in the file
- The image is re-encoded, so camera metadata (EXIF, including GPS) is not carried over. JPG has no transparency, so transparent areas become white. PNG is lossless: to shrink one, reduce its dimensions or convert it to WebP.
More image tools
All free, all in your browser, all without uploading anything.
Compress
Generic, exact-size, batch, or site-wide compression workflows.
Convert
JPG, PNG, WebP, AVIF, HEIC and PDF — plus the full matrix.
Workspace
One upload, many operations — compress, resize, convert, strip.
All tools
The full directory: resize, crop, flip, rotate, privacy, PDF, more.
Popular size targets
Built for creators and professionals
Most online tools auto-compress to one fixed setting and leave you guessing. Ours give you the controls you actually want, with sane defaults for when you just need it done.
Control over quality
Quality slider, dimension cap, format choice. Set the trade-off yourself instead of taking a one-size-fits-all default.
Photographer-friendly output
Smart defaults that keep skin tones, fine detail and text legibility. No washed-out faces, no mushy edges.
Private by design
Files never leave your device. Compression runs locally in your browser so you can drop client work in without worrying.
Free, no account
Nothing to sign up for, nothing to pay. Open the page, drop an image, get a smaller file. The same goes for the whole toolkit.
How it works
Three steps — no setup, no sign up.
- 1
Upload your image
Drag and drop a JPG, PNG or WebP file, or click to choose one from your device.
- 2
Compress automatically
We resize and re-encode in your browser using smart defaults. No waiting in a queue.
- 3
Download a smaller file
Compare the before and after sizes, then save the optimised image with one click.
Frequently asked questions
Everything you need to know about compressing images with our free online tool.
- Is this image compressor really free?
- Yes. Image Compressor is free to use with no signup, no watermark, and no daily limit. The core compressor will always stay free.
- Which image formats are supported?
- The compressor opens JPG (.jpg / .jpeg), PNG (.png) and WebP (.webp) files up to 25MB. By default it saves in the same format, or you can switch the output to JPG, PNG or WebP. iPhone HEIC photos open only in the HEIC to JPG tool. AVIF output is offered only if your browser can encode AVIF; many browsers currently can't, and the tool tells you when that's the case.
- Are my images uploaded to a server?
- No. The image is decoded and re-encoded in your web browser using its built-in canvas encoder. The tools have no upload step, so the image itself is not sent to our server. Analytics record usage numbers such as file size and format, not the image.
- How much will the file size be reduced?
- It depends on the original. Large camera or phone JPGs usually shrink a lot, mainly because the default settings cap the longest edge at 1920 pixels. Files that are already small or well compressed may barely change, and the tool warns you if the result would be the same size or larger. PNG is lossless, so a PNG only gets smaller if you reduce its dimensions or switch the output to WebP or JPG.
- Will compression reduce image quality?
- JPG and WebP compression is lossy, so some detail is discarded; that is how the file gets smaller. The defaults are quality 80 and a maximum of 1920 pixels on the longest edge, which suits websites, blogs and social media. You can compare before and after side by side, raise the quality, or choose "Original" dimensions before downloading.
- Is there a maximum file size or resolution?
- Each file can be up to 25MB. By default the longest edge is capped at 1920 pixels; choose "Original" in the Max dimension menu to keep full size. If you need the file under a specific size, use the compress-to-exact-KB tool instead.
- Does it work on my phone?
- Yes. Image Compressor is fully mobile-responsive and works in modern mobile browsers including Safari on iOS and Chrome on Android. You can upload directly from your camera roll.
- Can I compress multiple images at once?
- Yes — the bulk compressor processes a folder of images in one go and packages the results into a single ZIP download. The same settings apply to every file in the batch.
- Do compressed images keep their EXIF data?
- No. The image is re-encoded through the browser canvas, which does not carry EXIF metadata over, so camera details and GPS location are not in the downloaded file. Your original file is unchanged.
- Is the tool free to use commercially?
- Yes. You can use Image Compressor for personal, commercial, or client work. The compressed files belong to you.