You attach a PDF to an email and it bounces, or a form tells you "file too large". Email services usually stop accepting attachments somewhere around 20 to 25 MB, and plenty of forms and portals only allow a few megabytes. The annoying part is that the PDF might be just a few pages.
Why is my PDF so big?
A PDF is only as heavy as what is inside it, and the usual culprit is pictures:
- Scans. A scanned page is a photo of a piece of paper, so every page stores a whole picture. Ten scanned pages can weigh far more than a hundred pages typed in a word processor.
- Photos and screenshots dropped into a document at full camera size.
- Plain text is tiny. A normal typed PDF is already small, so there is very little to squeeze out of it.
That tells you something useful before you try anything: if your PDF is mostly typed text, compressing it will do little. If it is a scan or full of photos, it can shrink a lot.
What the free Compress tool actually does
Open the Compress tab in GetPlugzz PDF Tools and it works in up to two steps. Afterwards it tells you which one it used.
- A quick clean-up. It saves the file again in a more efficient way, without changing how any page looks. Text stays selectable. It is safe, but it usually saves only a little.
- Redrawing the pages as pictures (scans and photo-heavy PDFs only). If the PDF is heavy with images, the tool redraws each page as a compressed image, at the size and quality of the level you pick. At normal size the pages look the same, but the file is much smaller. The catch is that the text becomes part of the picture, so it can no longer be selected.
It keeps whichever result is smaller. If it could not save more than about 2 percent, it says so and downloads nothing, so you never end up with a pointless copy. A PDF with plenty of real text and light pages only gets step one. Scans and image-heavy files get both steps.
How to make a PDF smaller, step by step
- Open the tool. Go to getplugzz.com/pdf-tools and pick the Compress tab. No sign-up, no install.
- Drop in your PDF. One file at a time. If you have several, you can merge them first with the Merge tab (see how to merge PDF files), then compress the result.
- Pick a level. Balanced is the default. Small makes the smallest file, and Light keeps the pages sharper.
- Press Compress PDF and keep the tab in front. Redrawing pages takes a moment and works best while you are looking at the tab, so do not switch away until it finishes.
- Check the result. It shows the size before and after, and whether the text was kept selectable or the pages were flattened to images. The new file downloads on its own, named
getplugzz_compressed_followed by a time stamp. Your original is not touched.
Which level should you pick?
- Small. The smallest file. Pages are redrawn at lower quality. Use it when an email or upload limit is the problem and the pages are easy to read.
- Balanced. The middle road, and the right choice most of the time.
- Light. The sharpest of the three, and the biggest file. Use it for small print, drawings and signatures.
If the result is still too big, run it again on the original with Small. If it looks blurry, go back to Light. Because the original is never changed, you can try as many times as you like.
The one trade-off: the text may stop being selectable
When the tool redraws pages as pictures, you can no longer select, copy or search the words. For a plain scan that usually changes nothing, because a scan has no real text to begin with. But if your scan had been run through text recognition (OCR) so that you could search it, that search is lost in the compressed copy. So send the small one, and keep the original for yourself.
When Compress will not help
- The PDF is mostly typed text. It is usually already small. The tool warns you about this when you load the file, and it may answer "already about as small as it gets" and download nothing.
- The file is still over the limit. Split it in two with the Split tab and send two emails, or share it through a link instead of an attachment.
When you'd actually need this
- Emailing a scanned contract or a bundle of invoices that bounces back.
- Uploading to a form or portal that rejects big files, such as a job, school or admin application.
- Sending a report that is full of photos or screenshots.
- Tidying up a folder of old scans that takes up far more space than it should.
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Good to know before you start
- A text PDF is only tidied up and stays searchable. All three levels then give about the same size.
- A scan or photo-heavy PDF is turned into images. It gets much smaller, but its text can no longer be selected or searched.
- The sizes shown are estimates; the final file can differ a little.
- If it can't save at least about 2%, nothing is downloaded. The file is already as small as this tool can make it.
FAQ
No. Reading the file, shrinking it and building the new one all happen inside your browser, on your own computer. Your document never goes to a server.
It depends on the PDF. A mostly-text PDF only gets the lossless clean-up, so nothing about it changes. A scan or a photo-heavy PDF has its pages redrawn as pictures, which can look slightly softer. Pick Light if you want them as sharp as possible.
Because text is stored very efficiently, so a typed document has little left to squeeze. The tool only downloads a new file when it saves more than about 2 percent. Otherwise it tells you and downloads nothing.
The result message tells you. If it says the text was kept selectable, yes. If it says the pages were flattened to images, no, because the text is now part of the picture. Keep your original for anything you need to search or copy from.
It depends on your provider and the receiver's. Many email services stop somewhere around 20 to 25 MB, and some forms and portals allow only a few megabytes. Check the limit you are up against, then compare it to the size the tool shows you after compressing.
One at a time. If you want a single smaller file from several PDFs, merge them first with the Merge tab, then compress the result.
Yes. No account, no watermark on your file, and no limit on how many PDFs you compress.
Free PDF Tools — No Upload, No Sign-Up
Merge, split, compress and convert PDFs. Built by GetPlugzz, processed entirely in your browser.
