Compress a PDF — without uploading it
Shrink scans and photo-heavy reports right in your browser. No file-size limit, no watermark, no account. Honest about the trade-off: compressed pages are images, so text stops being selectable.
How it works
- 01
Drop your PDF
The file opens in your browser’s memory — it never travels over the network.
- 02
Pick a preset
Email, Web or Print. The tool warns you first if a file is mostly text and unlikely to shrink.
- 03
Download the result
Honest before → after sizes, saved straight to your device. Your original is untouched.
Frequently asked questions
How do I know my PDF isn’t uploaded?
Open your browser's developer tools (F12 → Network tab) before choosing a file. You'll see no upload requests while compressing — and once the page has loaded, the tool keeps working in airplane mode.
Will compression reduce quality? Will text stay selectable?
Compression works by re-rendering each page as an image at the DPI and quality you pick — that is what makes big scans dramatically smaller. It also means the compressed file’s text is no longer selectable or searchable, and very fine detail can soften at the Email preset. Your original file is untouched.
Why did my PDF barely shrink — or get bigger?
If a PDF is mostly real text, it is already extremely compact, and re-rendering it as images makes it larger. The tool warns you before compressing a text-heavy file, and reports honest before/after sizes so you can decide to keep the original.
Which preset should I pick?
Email (110 DPI) for the smallest file that reads fine on screen; Web (150 DPI) as the everyday balance; Print (220 DPI) if the PDF will be printed. If unsure, start with Web — you can always re-run from the original.
Is there a file-size limit?
No fixed limit. Pages are processed one at a time and memory is released between pages, so large documents depend only on your device. A progress bar and cancel button keep long jobs under your control.
Is it really free?
Yes — no task limits, no watermarks, no account. The site is paid for by the labelled display ads on the page.