Upload one or more PDFs, shrink them by recompressing embedded images
Lower quality = smaller file, more image artifacts. Text stays sharp either way. Compressing multiple files downloads a single ZIP.
A PDF Compressor shrinks a PDF's file size — usually by re-encoding the images inside it — so it's easier to email, upload, or store. This one runs entirely in your browser: upload a file, get a smaller PDF back, nothing to install.
Upload one or more PDFs (click or drag them in).
Set the quality slider and press "Compress PDF."
Download the result — a single PDF, or a ZIP if you compressed several.
The quality slider controls how much the images inside your PDF are compressed. Keep it toward "Higher quality" to shrink the file while keeping images looking sharp; text stays crisp no matter what you choose.
It re-encodes every embedded image at the quality level you pick, and automatically scales down any oversized image. Repeated content and page data get cleaned up too. Text and vector graphics aren't touched, so a document that's mostly text won't shrink much — the size drop comes from the images.
A smaller PDF is faster to send, quicker to upload, and takes up less storage space — useful any time file size becomes a limit rather than the content itself. A few common cases:
A smaller file sends faster over a slow connection or mobile data.
Fit more scanned documents into the same cloud storage or disk space.
Keep a page fast when it links to or embeds a PDF.
Scanned pages balloon file size fast — compressing keeps a multi-page scan manageable.
Scanned documents and PDFs full of photos can balloon into tens of megabytes. Dragging the quality slider toward "Smaller file" gets the biggest size reduction for these.
Most inboxes cap attachments around 20-25MB. Compressing a bulky PDF before attaching it is often the fastest way to get under that limit.
Job applications, visa forms, and government portals often reject PDFs over a set size — compress first so the upload actually goes through.
Upload the PDF, drag the quality slider to balance size against image sharpness, and press "Compress PDF" — the smaller file downloads straight to your device, ready to send or store.
Compressing only touches the images inside your PDF — text, layout, fonts, and page structure stay exactly as they were. If the result would somehow end up bigger than your original file, you get the original back instead.
Yes — your file is processed in memory during the request and never written to disk or stored anywhere. No account or sign-up is required to use it.
Works in any modern browser — desktop or mobile, Windows, Mac, iPad, iPhone, or Android. Tap or click to upload, adjust the slider, and compress. No app to install.
Upload your PDF above, choose a quality level, and press "Compress PDF" — the smaller file downloads straight to your device, no sign-up needed.
Not much — this tool mainly shrinks the images inside a PDF, so a document with no images won't get much smaller.
How much the images inside your PDF get compressed. Lower means a smaller file but images look a bit rougher; text always stays sharp.
Yes, oversized images are scaled down automatically as part of compressing the file.
No. If compressing wouldn't actually help, you just get your original file back.
Yes. Uploading multiple files compresses each one and downloads them together in a single ZIP.
Need the reverse — turn images into a PDF? Try Image to PDF.