Compress PDF
Shrink PDF file size while keeping content crisp. Choose your trade-off.
Drop your PDF here, or click to browse
PDF up to ~100 MB · stays on your device
Updated 2026 · Maintained by the CrispPDF team
Oversized PDFs slow down everything: inboxes reject attachments, web forms time out, and cloud storage fills up faster than it should. CrispPDF's compressor shrinks files by intelligently down-sampling images and stripping unused metadata—while keeping text razor-sharp.
Pick a target size (100 KB, 200 KB, 1 MB) or choose High / Medium / Low quality. The tool previews before-and-after file sizes so you know exactly what you're getting. Once satisfied, click Compress and the smaller PDF downloads instantly. No watermarks, no signup, no daily cap.
For Indian government portals that impose strict 50 KB or 100 KB limits on Aadhaar uploads, the preset targets are invaluable: hit the exact threshold without trial-and-error. Globally, the same logic applies to email attachments and client file shares. Sending a 20 MB proposal when 2 MB would suffice wastes bandwidth and patience—CrispPDF removes that friction.
Because compression happens inside your browser, sensitive scans—bank statements, medical prescriptions, identity proofs—never leave your device. Compare that to cloud-based compressors where you're trusting unknown servers with personal data. Privacy matters, and CrispPDF bakes it in by design.
After compressing, explore related tools: merge multiple files into one smaller package, convert the PDF to grayscale for cheaper printing, or protect the result with a password before emailing. The entire workflow stays local, fast, and free.
// How to use
How to use Compress PDF
- 1
Upload your PDF
Drag the oversized PDF into the compressor. It reads the file in your browser — no upload.
- 2
Pick a target size
Choose a preset (100 KB, 200 KB, 1 MB) or a quality level (High / Medium / Low).
- 3
Compress
Click Compress. Images are re-sampled and unused metadata stripped until the target size is hit.
- 4
Download the smaller PDF
The optimised PDF downloads instantly, ready for email, exam forms, or web upload.
// Why CrispPDF
Why use CrispPDF for compress pdf?
CrispPDF runs entirely in your browser — your files never touch a server. No signup, no watermarks, no daily limits, no upsells. We built it because every other PDF site is slow, ad-stuffed, or hides the good features behind a paywall. CrispPDF is fast on a phone, fast on a laptop, fast on a 10-year-old machine. Output is byte-clean: signatures stay sharp, compressed PDFs stay readable, conversions preserve layout where the source allows. And because nothing leaves your device, even confidential documents are safe to process. Bookmark this page, share it with your team, and stop juggling five different PDF sites for five different tasks.
- No signup, no email gate
- No watermarks on output
- Files never stored on a server
- Works on phone, tablet, and desktop
// FAQ
Compress PDF — frequently asked questions
+How to compress Aadhaar PDF to 100kb?
Upload your Aadhaar PDF, select the 100 KB preset, and download. The tool optimizes images to hit that target while keeping text legible.
+What is the best PDF compressor for SSC forms?
CrispPDF is purpose-built for precise size limits. Choose the 100 KB or 200 KB preset to meet most SSC upload requirements.
+Will my PDF become blurry if compressed to 50kb?
Text stays sharp. Images may lose some detail at extreme sizes, but photos usually remain acceptably clear.
+Why is my PDF file size so large?
High-res scans, embedded fonts, and uncompressed images inflate PDFs. CrispPDF strips redundancy and resamples images to cut size.
+Does compressing a PDF reduce image quality?
Slightly—Medium and Low presets downsample images. High preset preserves near-original quality while still trimming file size.
+How do I shrink a PDF to send via email?
Upload the PDF, pick a target under your email provider's limit (usually 25 MB), and download the compressed file.
India guides using Compress PDF
Need an exact file size?
If a portal or form enforces a hard upload limit, use the matching preset page — each one targets that exact ceiling.