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Shrink your PDFs down to size without losing your mind or too much quality.
That PDF is way too big to email. We have all been there. Here is how to squeeze it down to something manageable.
Every few months you find yourself staring at an email that says attachment too large and you think, man, I should really get some compression software. Then you forget until next time. With an online tool, you do not need to install anything. You do not need to remember which program you used last time. You just open the page, drop the file, and you are done. The real kicker with PDFNeo is that it all happens on your machine. No uploading your confidential report to some random server to get compressed. Your financials, your client docs — they stay on your device the whole time. And it is free. Like actually free. No watermarks, no upgrade-to-unlock nonsense, no email required. Just compression that works.
Emailing a large PDF. The classic scenario. Your 25MB email limit is staring you in the face and your PDF is 38MB. Compress it down and suddenly you are under the limit without having to mess with file sharing links nobody wants to click.
Uploading to websites with size limits. Job applications, government forms, university portals — they all have weirdly specific file size limits. Your 2MB limit on a resume PDF that is currently 6MB? Compress it and you are in.
Storing archives to save space. You have got thousands of PDFs taking up space on your drive or in the cloud. Compress the whole batch and reclaim gigabytes of storage without tossing anything.
Faster page loads on the web. If you are putting PDFs on your website, smaller files load faster. Visitors on slow connections will thank you, and so will your bounce rate.
Start with Medium quality and see how it looks. Most of the time Medium (120 DPI) is totally unnoticeable visually but cuts file size dramatically. Only drop to Low if you really need to squeeze more out, and only use High when the document has important fine details.
Know what is making your PDF big. Is it scanned images? Those compress really well. Is it text with embedded fonts? Those might not compress much at all. Set your expectations accordingly so you are not disappointed when a text-only PDF only shrinks 10 percent.
Compress before you merge, not after. If you are combining multiple PDFs, compress each one first then merge. You will get better results per-document than compressing the whole thing at once, especially if the originals have different image qualities.
Always keep the original. Compression is lossy at the image-quality settings. Save the original uncompressed file somewhere safe, then work with the compressed version. You never know when you will need the full quality version later.
It depends on what is in it. Scanned documents with photos can shrink by 80 to 90 percent. Text-heavy PDFs might only drop 10 to 30 percent. The medium setting usually gives the best quality-to-size ratio.
Some quality loss happens at the image level. Medium quality (120 DPI) is usually indistinguishable to the naked eye for screen viewing. If you need print quality, stick with High.
Right now the tool handles one file at a time. If you have several files to compress, just run them through one after another. It only takes a few seconds each.
Not at all. Everything runs locally in your browser using JavaScript. Your file never leaves your device. Close the tab and poof — it is gone.
DPI stands for dots per inch. It is the resolution the pages get re-rendered at. Lower DPI means smaller file size but potentially fuzzier text and images. Higher DPI means sharper but bigger files.
You will need to unlock it first. Use the unlock tool to remove the password, then compress away. Quick two-step process.
Scanned PDFs actually compress the best because they are essentially just images. You can usually crank down the DPI quite a bit before it becomes noticeable.