Compress PDF
Optimize PDF structure and report the actual result.
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Reduce image size with real, adjustable compression.
Your file stays in this browser.
JPG, PNG, WEBP · maximum 25 MB per file
Focus this area, then paste with Ctrl/⌘+VCompress JPG, PNG and WebP images in batches with adjustable quality and truthful before-and-after file sizes.
Compression results depend on the source. Photographs usually shrink more with JPG or WebP quality controls, while already optimized images may show little improvement.
Image compression is a trade between file size and visible detail, and the right balance depends on where the picture is going. MyFileNest's Image Compressor shows the real before-and-after size for every file, offers presets for common destinations, and runs in your browser so your photos are not uploaded.
Two things make an image file smaller: fewer pixels and stronger compression. The compressor can do both. You choose an output format, a quality level for JPG and WebP, and optionally a maximum width. Each image is then re-encoded in your browser and the tool reports its new size and the percentage saved.
PNG output is lossless, so the quality slider does not apply to it; PNG files shrink mainly when you reduce their dimensions or convert photographs to JPG or WebP instead. Re-encoding in the browser also leaves out embedded camera metadata such as the device model and GPS location, which is often a welcome side effect when sharing photos.
The Quick goal buttons are starting points. You can adjust any value afterwards.
| Goal | Format | Quality | Max width |
|---|---|---|---|
| JPG | 68% | 1,600 px | |
| Website | WebP | 76% | 1,920 px |
| JPG | 70% | 1,600 px | |
| High quality | Keeps current format | 90% | Original |
| Max compression | WebP | 55% | 1,280 px |
| Quality | Typical look | Good for |
|---|---|---|
| 85–95% | Indistinguishable from the original for most viewers | Portfolios, print proofs, product hero images |
| 70–84% | Excellent on screens, much smaller | Websites, blogs, email newsletters |
| 55–69% | Slight softness in fine detail | Messaging, forms with strict limits |
| Below 55% | Visible blocking and banding | Only when a hard size limit leaves no choice |
A small online shop photographs products on a modern phone. Each photo is around 4,000 pixels wide and 3–5 MB, far more than a product page needs. Choosing the Website goal converts them to WebP at 76% quality with a maximum width of 1,920 pixels. A typical photo then lands in the low hundreds of kilobytes, often more than 90% smaller, and still looks sharp on a laptop screen. Pages load faster, which helps visitors on mobile data and is one of the signals search engines use to judge page experience.
For the same shop's printed catalogue, the right choice is the opposite: keep the originals, or use High quality without reducing width, because print needs far more pixels than a screen.
Resizing removes pixels; compression stores the remaining pixels more efficiently. Halving width and height removes three quarters of the pixels, which usually saves more than any quality setting. For the best results, do both: size the image for its display, then compress at a moderate quality. If you need exact dimensions or cropping to a ratio, use Image Resizer or Crop Image first, then compress.
WebP is usually the smallest choice at a given visual quality and is supported by all current major browsers, which makes it ideal for websites. JPG remains the safest choice for email attachments, forms and anything that might be opened in older software. PNG is the right output for screenshots, diagrams and images with transparency, where lossy compression would blur sharp edges.
If you are unsure whether a destination accepts WebP, use JPG. Compatibility problems cost more time than a few extra kilobytes.
Is there a limit on how many images I can compress at once? Batches are processed in your browser, so the practical limit is your device's memory. Very large batches of full-resolution photos go faster on a computer.
Will compression change the image dimensions? Only if you set a maximum width or choose a Quick goal that includes one. Otherwise the pixel dimensions stay the same.
Are my photos uploaded? No. Images are compressed in this browser tab and returned as downloads.
Reduce image size with real, adjustable compression. Review the result before downloading, copying, or using it.
Speed up website images. Use a representative source, compare the output with the original, and keep the version that meets the destination's requirements.
Already optimized files may not become smaller. Return to the retained source, adjust the relevant setting and create a fresh result rather than repeatedly processing the output.
The file is processed on this device and is not uploaded to MyFileNest. Closing or refreshing the page clears the active session.
Practical limit: Files up to 25 MB are accepted for guests. Very large dimensions, complex documents or limited device memory can affect browser processing.