01
Drop your PDF
Drag a file in, pick it from your device, or paste it. Add as many as you like.
Your files never leave your device
Compress PDF to any size,
right in your browser
PDF File Compress shrinks PDFs to exact limits like 100 KB or 1 MB with text that stays sharp. No uploads, no sign up, no waiting in a queue.
Drop your PDF here
or paste it with Ctrl + VPick a file from your phone
- Never uploaded
- Done in seconds
- Works offline
0 bytes
uploaded to any server
0%
max size cut on photo heavy PDFs
< 0 s
to shrink an 18 MB file on a laptop
0%
free, no sign up, no watermark
How it works
Three steps. No account. No upload.
You compress PDF documents online, yet everything happens inside this browser tab. That keeps it fast and keeps your documents with you.
02
Choose how small
Go with Recommended, squeeze harder with Extreme, or type the exact size your form asks for.
03
Download and compare
Get your file in seconds and slide between before and after to check the quality yourself.
Real results
Every image gets its own settings
Most tools push one quality slider across the whole file. We measure each image, find the lowest setting your eye cannot tell apart, and leave text and vector graphics untouched.
- Text stays selectable and razor sharp
- Scans become clean black and white when it helps
- Never bigger than your original, guaranteed
| File | Before | After | Saved |
|---|---|---|---|
Photo heavy brochure 6 pages · Recommended | 18.4 MB | 1.07 MB | 94% |
Report with charts and photos 10 pages · Recommended | 3.66 MB | 565 KB | 85% |
Scanned application form 4 pages · Extreme, JBIG2 | 4.65 MB | 108 KB | 98% |
Scanned form, 200 KB limit 4 pages · Target size | 3.75 MB | 162 KB | 96% |
Features
Built to make files small, not to make you wait
Exact target size
Type 100 KB, 200 KB or 2 MB. We split the budget across images, giving more bytes to the ones you will actually look at.
100 KB200 KB500 KB1 MB2 MB
Works offline
Once the page loads, you can turn off Wi-Fi. Compression runs fully on your device.
Smart with scans
Detects scanned pages and stores text as crisp black and white, often 10 times smaller.
Text stays sharp
Fonts and vector graphics are never turned into blurry pictures.
Batch files
Drop a whole folder of PDFs and download them all as one ZIP.
Fast, even on big files
Every CPU core works in parallel with WebAssembly, so an 18 MB brochure finishes in about two seconds. You skip the upload, so you skip the wait.
Upload time
0 s
Server queue
None
Cores used
All
Compress PDF online free
Need a specific size? Start here
Most upload forms ask for a PDF under a fixed limit. Pick your size and the tool opens ready to go. It works for typed documents, phone scans and photo heavy files, and you can compress PDF files online free as often as you like.
Privacy by design
Your documents never touch a server
Bank statements, ID cards, contracts, medical reports. The files people compress are often the most private ones. So we built the tool to never see them.
- No upload
- This tab reads files straight from your device.
- No storage
- Close the tab and every byte is gone from memory.
- No account
- Nothing to sign up for, nothing to track you with.
- Works offline
- Disconnect after the page loads and it still works.
Your PDF
Smaller PDF
Cloud servers involved: 0
FAQ
Questions people ask
Still unsure about something? Every answer here is the honest version.
No. The whole compression engine runs inside your browser using WebAssembly. Your browser reads the PDF from your device, compresses it in memory and hands it back to you. No server ever receives it, which is also why the tool works offline.
Drop the PDF into the box at the top of this page and press Compress PDF. Recommended mode shrinks the PDF file size with no visible quality loss, and it handles any PDF document, from typed reports to phone scans. There is no sign up, no watermark and no limit on files.
Both. You open PDF File Compress online in any modern browser, and after the first visit the page keeps working even without internet, because your device does the compressing.
Drop your file, choose Target size, then type the size or tap a quick option like 100 KB or 200 KB. We test every image, share the byte budget where it matters most and keep the result under your limit.
Some files cannot reach very small sizes without becoming unreadable, for example long text documents with embedded fonts. In that case we tell you the smallest size we reached and still give you that file. We never pretend.
No. We leave text, fonts and vector drawings exactly as they are. We only recompress pictures and scanned pages, and you can compare before and after with the slider.
There is no fixed limit. Very large files depend on your device memory. Files of a few hundred megabytes work fine on most laptops.
Files that only restrict editing or printing work fine. For files that need a password to open, unlock them first in your PDF reader. We never ask for your password.
Yes. No sign up, no watermark and no daily limit. Because your device does the work, there are no server costs to pass on to you.
Your next PDF can be a lot lighter
Free, private and done before an upload would even finish.
Compress a PDF now