PDF Size Reducer & Compressor

Compress PDF documents to custom KB sizes or apply 100% lossless structural stream compression. 100% private in-browser engine.

Exact Custom Target KB/MB AI "What's Best" Advisor 100% Private (No Uploads) 100% Lossless Vector Preserved

Drop your PDF file here

or click to browse from computer / mobile

Supports: All PDF documents, scanned forms, ebooks, resumes, contracts

PDF Compression & Target Size Settings

100% Lossless

Pure Lossless Stream

Cleans metadata, optimizes object trees & streams. Zero pixel alteration.

Recommended

Smart Balanced (50-80%)

Sharp crisp text vectors + high-efficiency image stream optimization.

Exact Target

Custom Exact Size (KB)

Target exact size required for govt portals, exam forms, or mail.

Target File Size Limit Solver will compress file to stay below this limit

Image Rendering Resolution (DPI) 150 DPI Higher DPI keeps scanned documents ultra crisp; lower DPI achieves drastic file reductions.

Compression Quality 75% 75% produces visually identical text & charts with 60-80% size savings.

PDF Compressed Successfully!

Download Compressed PDF

Original PDF

- Pages -

Compressed PDF

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-0% File Size Reduction

Within Limit Target Compliance

0ms Engine Time

Need to extract pages or convert this PDF to images?

Convert PDF pages into high-resolution JPG/PNG images or compress photos to exact 50KB.

PDF to JPG Image Size Reducer (50KB)

How to Reduce PDF File Size Online for Free

Whether you need to upload a resume on a job board with a 500KB cap, submit exam certificates under 200KB on government portals (UPSC, SSC, NTA, NEET, State PSCs), or attach a multi-page PDF to an email, follow these easy steps:

Upload PDF: Drag and drop your PDF document into the designated upload dropzone.

Review AI Diagnostic: Our intelligent analyzer immediately scans your PDF's object stream, page count, and embedded image density to tell you the optimal compression mode.

Select Compression Mode or Exact Target KB: Choose 100% Pure Lossless for pure text contracts, Smart Balanced for standard documents, or enter an exact custom target (e.g., 200 KB).

Compress & Download: Click Compress PDF Now to inspect your original vs compressed file sizes and instantly download the optimized PDF.

Frequently Asked Questions

How do I reduce a PDF file size to 200KB or 100KB for government job exams?

Upload your PDF into the dropzone, click the '200 KB (Govt Forms)' or '100 KB' quick preset button (or type your exact custom size in KB), choose your preferred compression mode, and click 'Compress PDF'. The tool iteratively calculates the optimal vector stream compression and image encoding to output a crisp PDF strictly below your required limit.

What is the difference between 100% Lossless and Smart Balance compression?

100% Lossless mode performs pure structural PDF stream compression (re-encoding Flate/Deflate streams, removing unreferenced metadata, deduplicating fonts and objects) with zero pixel or text alteration. Smart Balance and Target Size modes also optimize high-resolution embedded images and scans to achieve up to 90% size reduction while keeping text vectors and fonts perfectly razor-sharp.

Are my sensitive PDF contracts, invoices, and documents kept private?

Yes, 100%. All PDF compression and processing execute entirely inside your local web browser using client-side JavaScript (pdf-lib and PDF.js). Your confidential files are never uploaded to any remote server or stored in the cloud.

Can I compress multi-page PDF documents and scanned textbooks?

Yes. Our PDF size reducer smoothly processes single-page certificates, resumes, multi-page legal contracts, and large scanned books with hundreds of pages without any arbitrary file size caps.