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🗜️ Compress PDF

Shrink a PDF in your browser: lossless optimized re-save, or strong compression by rasterizing pages.

🔒 Your files never leave your device

How to use: Compress PDF

Shrink a PDF in your browser: lossless optimized re-save, or strong compression by rasterizing pages. Everything happens inside your browser on your own device. Your files, numbers and text are never uploaded, there are no accounts, cookies or trackers, and closing the tab removes the data.

Common uses

Getting a PDF under an upload limit such as 2 MB
Making scanned PDFs smaller for email
Cleaning up a PDF with a lossless re-save

Step by step

Choose a PDF.
Pick a mode (optimized or strong) and quality.
Press Compress and download.

Worked example

For example, a scanned 8 MB document can often shrink a lot with strong mode, which turns pages into images; text documents usually do better with the lossless mode, which keeps text selectable.

Tips for better results

Check the page count and order in the preview before saving. Very large or scanned PDFs need more memory, so on an older phone close other tabs first. In most PDF tools, when you finish, the Next buttons can pass the new PDF to another PDF tool, without downloading it first. The page is designed for phones first, so it works on a 375-pixel screen as well as on a desktop.

Good to know

A PDF can hold real text, which stays sharp and searchable, or scanned images of pages, which are bigger. Tools that copy pages keep the original quality; tools that turn pages into images make files smaller but the text can no longer be selected. Password-protected or damaged PDFs may not open; remove the password with the software that created it first. Your original file is never changed, a new file is saved instead.

Why a browser-based tool?

Many online tools upload whatever you give them to a remote server, process it there and send it back. That is slower on a weak mobile connection and means a copy of your document, photo or figures sits on someone else’s computer. Free Adawat works differently: the code is downloaded once, then the work happens on your phone or computer. That keeps personal papers such as passports, visas, salary slips and contracts private, and it also means there is no queue, no file count limit and no waiting for a download link.

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FAQ

Why didn't it shrink much?

This is best-effort; text PDFs are often already compressed.

What does strong mode do?

It turns each page into a JPEG image — much smaller, but text is no longer selectable.

Is Compress PDF free?

Yes. It is completely free, with no sign-up, no watermark and no daily limit. The only limit is your device memory for very large files.

Are my files or data uploaded?

No. All processing happens in your browser on your device. Nothing you enter or select is sent to a server.

Does it work on a phone?

Yes. It works in modern mobile browsers on Android and iPhone, and on tablets and computers.

Does it work without internet?

Once the page has fully loaded, the tool runs on your device, so it keeps working if the connection drops. Pages you have visited before can often open offline too.

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