PDF tool guide
How to use Compress PDF online
Reduce image-heavy PDF size with three quality settings.
Step-by-step
Use Compress PDF in three quick steps
- Choose an unlocked PDF up to 25 MB and 80 pages.
- Start with Balanced (150 dpi), or choose Smaller file (96 dpi) or Print quality (300 dpi).
- Download the copy, compare its size and inspect text, images and any forms.
What to check in the result
PDFs up to 25 MB and 80 pages. Savings vary; image detail, forms and signatures can change. Keep the original and review the result.
Compression can reduce image detail and alter interactive forms or signatures. If the rebuild is larger, the original is returned and no reduction is claimed. No. Text-only or already compressed PDFs may see little or no reduction. No exact target size is guaranteed.
Keep the original and inspect the downloaded copy before sharing it or replacing your source file.
Before you begin
Keep your original file as a backup and only process content you are authorised to modify. If you are signed in, open My account to review completed tool usage and any active membership dates.