PDF compression
Shrink PDF online — reduce PDF file size free
Large PDFs are hard to email, upload, or send on chat. BotMart compresses documents and scans in the cloud so you get a smaller file without installing software.
Need to shrink a PDF online or reduce PDF file size without desktop software? Whether you have a scanned contract, a slide deck export, or a photo-heavy report, BotMart recompresses embedded images with simple presets so the file fits email, WhatsApp, and web uploads.
When you need a smaller PDF
- Email attachments — Fit Gmail and Outlook limits. See compress PDF for email.
- WhatsApp and chat — Send documents that currently fail or stall. See compress PDF for WhatsApp.
- Web uploads — Job portals, school portals, and government forms often cap upload size.
How to reduce PDF file size
- Sign in free.
- Upload on the PDF compressor.
- Pick a preset: screen for smallest size, ebook for a balance, print when quality matters more.
- Download and confirm the new size before you send or upload.
Free vs PRO
Free includes a daily job allowance and a file size cap. PRO raises limits and skips the ad wait on download. Same account works for video tools too.
Related tools
Convert Word files with DOCX to PDF, build a PDF from photos with JPG to PDF, or export pages as images with PDF to JPG.
FAQ
How do I shrink a PDF file online for free?
Sign in to BotMart, upload your PDF on the PDF compressor, pick a preset (screen for smallest, ebook for balance, print for higher fidelity), then download the smaller file. Uploads are removed within 24 hours.
How much smaller will my PDF get?
It depends on the content. Image-heavy scans often shrink a lot; already-optimized text PDFs may only drop a little.
Is my document private?
Jobs are tied to your account. Uploads and outputs are removed automatically within 24 hours.
Can I compress a PDF for email or WhatsApp?
Yes. Use the email or WhatsApp PDF guides for attachment and chat limits, or start from the PDF compressor with a screen/ebook preset.
Can I compress video too?
Yes—use reduce video file size for MP4, MOV, and WebM.