Compress image
Smaller files, same look. Everything runs in your browser — images are never uploaded.
Drop images here
or click to browse · JPG, PNG, WebP · multiple files supported
Images are processed on your device and never uploaded.
Options
How it works
- Drop one or more images into the box above, or click it to browse.
- Compression starts immediately with balanced default settings. Open Options to set a target file size or adjust quality.
- Click Download next to each result.
Frequently asked questions
- Are my images uploaded to a server?
- No. All compression happens locally in your browser. Your images never leave your device, which also makes the process instant — there is no upload or download wait.
- Will compressing reduce image quality?
- Compression removes data your eyes barely notice. At the default settings the difference is invisible in normal viewing. You can adjust the quality level under Options if you need finer control.
- What is the maximum file size?
- There is no hard limit — because nothing is uploaded, the only constraint is your device's memory. Images of 50 MB and more work fine on a normal computer.
- Which format gives the smallest files?
- For photos, WebP is typically 25–35% smaller than JPG at the same visual quality, and both are far smaller than PNG. Use Options to switch the output format — WebP is safe for anything displayed in a browser.
- How do I compress to an exact size like 100 KB?
- Open Options and enter a target size. The tool automatically finds the highest quality that fits under your number, scaling dimensions down slightly if quality alone can’t get there.
About this tool
Every image you put online carries a cost: slower page loads, heavier email attachments and failed uploads on forms with strict size limits. Image compression solves this by re-encoding a picture so it stores less data while looking essentially the same. Modern lossy encoders exploit the limits of human vision — fine color detail and subtle texture we barely register — which is why a photo can often shrink to a quarter of its original size with no visible change.
This tool runs entirely in your browser. When you drop an image, it is decoded and re-encoded locally using the same codecs your browser uses to display pictures, so nothing is ever transferred to a server. That has two practical consequences: compression starts instantly, with no upload or download wait, and your files remain private — screenshots with personal data, ID scans and client work never leave your device.
The format you choose matters as much as the quality setting. JPG remains the safest choice for photographs and is accepted everywhere. PNG is lossless and keeps transparency, which suits logos, screenshots and interface graphics, but it produces large files for photos. WebP combines both strengths — photographic compression and transparency — at file sizes typically 25–35% smaller than JPG, and every modern browser supports it.
If you need to hit a specific limit, open Options and set a target size instead of a quality level. The tool then searches for the highest quality that fits under your number, scaling dimensions slightly when quality alone is not enough. Your originals are never modified — every download is a new file, so you can experiment freely.