Reduce PDF file size for free, right in your browser. No upload, no sign-up, no watermark.
Your browser reads the PDF and recompresses suitable images. Text and vector content are kept where the PDF engine supports it.
No uploads, accounts, ads, or tracking. The processing engine runs locally on your device.
Image detail may change. High quality favors clarity; text and vector graphics usually remain sharp.
Yes. We try several settings and choose the best result under your target when possible.
Already optimized PDFs may have little redundancy. We keep the original if rewriting makes it larger.
Yes. Enter the password; it is only used in this tab. The compressed copy is saved without a password.
No. Files stay in this browser tab and are never sent to a server, whichever tool you use.
Free, with no account, watermark or daily limit. The only limit is your device's memory for very large files.
Yes. Every tool runs in modern mobile browsers. Very large PDFs can exceed a phone's memory; a computer handles those better.
Yes, once you have used a tool online: the site keeps its files in the browser and then runs without a connection.
Your PDF. Your device. Your rules.
All processing runs in a local Web Worker. This site uses no analytics, accounts, cookies, or PDF storage. Your browser downloads application assets, but PDF data, filenames, and metadata are not sent to us.
Privacy details →