Compress PDF files to reduce their size while keeping the best possible quality. Ideal for email attachments and fast uploads.
Email services block attachments over ~25 MB and many upload forms are stricter still, so an oversized PDF can stop you in your tracks. Compress PDF shrinks the file — mostly by optimising the images inside — while keeping the text crisp and readable. Scanned, image-heavy documents often drop by half or more.
Step-by-step guide: Read how to compress pdf with tips & FAQsDrop your PDF onto the Compress PDF tool above, or click to browse and pick it from your device.
Choose how hard to compress: lighter for the best quality, or stronger for the smallest possible file.
Download a smaller PDF in one click. Any files you upload are deleted automatically afterwards.
Yes — Compress PDF is free. There is no account to create, no watermark on your files, and generous daily limits for everyday use.
Drop files here or click to browse