Skip to content
Allin
Sign up · Sign in

Compress PDF

Shrink a PDF without losing anything: identical fonts and images repeated by a merge are merged back into one. A whole folder at once.

10 / 10 free files today

Related tools

All PDF tools →
Crop a PDFDrag a frame on the page to set the crop, or let the white margins be detected. Several documents at once, to the same measurements.Delete PDF pagesRemove the pages you name and keep everything else, without re-scanning the document.Extract links from a PDFList every external link a PDF carries, taken from its annotations rather than its text.Extract PDF pagesPick the pages from their thumbnails, then save them as one PDF — or as one PDF per page. Metadata included.Flatten a PDF formTurn filled form fields into ordinary page content so nobody can edit the answers.Image to PDF (JPG, PNG, WebP, GIF, BMP, AVIF, TIFF)Combine JPG or PNG images into a single PDF, one image per page. WebP, GIF, BMP, AVIF and TIFF are converted on the way in.Organize a PDFReorder, turn and remove PDF pages by dragging their thumbnails. Several documents at once, their pages free to mix.Rotate PDFRotate PDF pages 90°, 180° or 270° — all pages or a page range. Turns a stack of scans in one pass.

Open Compress PDF and you get an answer straight away, with no account to create. Its place is under PDF; Crop a PDF and Delete PDF pages answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Compress PDF do?

Shrink a PDF without losing anything: identical fonts and images repeated by a merge are merged back into one. A whole folder at once.

When would I actually use this?

Getting a document into the shape someone asked for: merging attachments into one file, pulling out the pages that matter, rotating a bad scan, or signing before sending back.

What is the most common mistake?

Drawing a black box over text to redact it. The characters are still in the file underneath and can be selected and copied — removing them means deleting the content, not covering it.

How is Compress PDF different from Crop a PDF?

They sit next to each other but answer different questions: Crop a PDF is the one to open when you need it to drag a frame on the page to set the crop, or let the white margins be detected. Several documents at once, to the same measurements. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Delete PDF pages is the closest one after this: Remove the pages you name and keep everything else, without re-scanning the document.

What else is worth having open alongside it?

Extract links from a PDF and Extract PDF pages — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

The working copy lives only as long as the tab does: nothing is kept between visits, and nothing can be recovered once you close it. Save the output before you leave, and keep the original until you have checked the result.

Further reading

All guides →
How-toGetting a PDF Under a 10 MB Upload LimitThe form rejects your file and offers no advice. What works depends entirely on where the megabytes actually are, and for a scanned document the answer is not compression at all — it is resolution. Here is how to tell which case you have in ten seconds.How-toMerging an Application Pack into One PDF, in the Right OrderA rental file, a loan application, a tender: the requester wants one document, in the order they listed. The merge itself takes seconds. What goes wrong is the ordering, the page sizes and the file that silently loses its signature — all of which are avoidable if you know where they bite.ExplainerWhy Compressing a File Twice Does Not Halve It TwiceThe first pass takes 30% off and the second takes nothing. That is not a broken tool — it is the difference between removing redundancy and removing information, and knowing which one you are doing tells you when to stop and what a second attempt actually costs.GuidePull the Plug: Which Online File Tools Actually Upload Your DocumentEvery online file tool promises your document is safe. Almost none tell you whether it leaves your machine at all. There is a five-second test that settles it without reading a single privacy policy, and it works on any tool — including this one.How-toPhotographing a Document and Getting a PDF That Is AcceptedNobody owns a scanner any more, so the phone does it. Two things decide whether the result is accepted: how you took the photograph, and what page size it becomes. The second one surprises people, because a photograph turned into a PDF is not A4 unless something makes it A4.GuideWhat a PDF Says About You: Reading and Clearing Its MetadataA PDF carries its metadata twice, in two stores that can tell different stories, and neither of them is the whole story. Here is what is actually in the file, what clearing it removes, and the two things that survive every wipe.