About the Compress PDF
Email limits and upload forms are the usual reason to compress a PDF. This tool re-renders each page at a resolution and quality you control, then rebuilds the document with a much smaller image-based PDF.
How to use it
- 1Open the PDFCheck the original size shown next to the file name.
- 2Choose qualityStart with 108 dpi and 70% JPEG quality. Raise the resolution for text you need to read closely.
- 3Download and compareThe result shows the before and after size so you can decide whether to try a lower setting.
Why use this compress pdf?
- Nothing leaves your device. The work happens in your browser tab. There is no upload endpoint in this app, so your files and text cannot be stored, logged or seen by us.
- No upload wait. You skip the round trip to a server entirely. Results are limited by your own CPU, not by network speed or queue size.
- Free, no account, no quotas. No sign-up wall, no watermark, no daily limit. Optional accounts only exist to save favourites and presets across devices.
Frequently asked questions
Is my PDF safe to use here?
Yes. This tool runs entirely in your browser using JavaScript. Nothing you paste or open is sent to a server, and the page keeps no copy after you close it.
Do I need to create an account?
No. Every tool is fully usable without signing in. An account only adds saved favourites and reusable presets.
Does it work on a phone?
Yes. The interface is mobile-first with large touch targets and a stacked layout, so it works on phones and tablets as well as desktops.
Why does the text stop being selectable?
Visual compression rasterises pages into images. That is what produces the large size reduction, but it removes the text layer. If you need searchable text, keep the original or run OCR afterwards.
What settings should I use for email?
For a 10 MB limit, try 108 dpi at 65–75% quality. For print, use 200 dpi at 85% or higher and expect a larger file.