🗜️ Ultra-Fast • 100% In-Browser • Zero Server Uploads

Compress PDF Online Free

Shrink PDF file size up to 90% while preserving crisp typography and clear images. Supports target KB limits, custom DPI, and batch compression.

Drop PDF files here, or browse files

Select single or multiple PDFs. 100% private — your files never leave your device.

File Queue 0 files

Total Original Size 0 B

Total Output Size —

Total Space Saved —

Compression Presets & Quality Settings

Select a compression mode or configure custom target file sizes.

Extreme ~80% Saved

Maximum size reduction. 96 DPI. Perfect for tight email limits & job portals.

Recommended Best Balance

150 DPI. Retains sharp readable text with crisp imagery and great compression.

High Quality Print Ready

200-300 DPI. Light optimization preserving maximum visual fidelity.

Target KB / MB Smart Fit

Compress to fit an exact size limit (e.g., 100 KB, 500 KB, 2 MB).

Advanced Controls (DPI, Quality Slider, Color Mode & Metadata)

Image Resolution (DPI) 150 DPI

72 DPI (Web) 150 DPI (Balanced) 300 DPI (Print)

JPEG Quality Compression 80%

10% (Maximum Shrink) 80% (Crisp) 100% (Lossless)

Color Mode

Color Grayscale B&W Doc

Strip metadata (Removes hidden author, producer & creation dates) Flatten annotations & form fields

Page Selection:

All Pages Odd Pages Even Pages Custom Range

Filename Suffix:

Active Document Pages:

0 Selected

How to Compress PDF Files Online Without Losing Quality

Upload Your PDF

Drag and drop your document into the compression box. You can upload multiple PDFs at once for batch processing.

Choose Compression Mode

Select from Extreme, Recommended, High Quality, or specify a custom Target Size (KB/MB).

Validate & Download

Our engine validates the output structure to ensure zero corrupted pages. Download the compressed PDF or a bundled ZIP archive.

Comparison of PDF Compression Levels

Preset Mode	Size Reduction	Resolution (DPI)	Visual Quality	Best Used For
Extreme	~70% to 90%	96 DPI	Standard Web Quality	Strict email attachment limits, Government portal uploads
Recommended (Default)	~40% to 65%	150 DPI	High Clarity & Sharp Text	Everyday document sharing, office presentations, ebooks
High Quality (Low)	~15% to 30%	200-300 DPI	Maximum Fidelity	High-definition color printing, portfolio archiving
Target Size (KB/MB)	Dynamic Fit	Adaptive	Optimized per target	Job applications requiring exactly < 200 KB or < 500 KB

Frequently Asked Questions (FAQ)

Will compressing my PDF blur the text?

No. Our Recommended mode optimizes document streams and raster images while preserving crisp typography and vector lines. If your document is text-heavy, the smart content analyzer automatically preserves text fidelity.

Can I compress a PDF to an exact target size (e.g., under 100 KB or 200 KB)?

Yes! Choose the Target KB / MB mode and enter your required file size limit (e.g. 200 KB). Our engine dynamically calculates the optimal DPI and quality per page to reach your target without exceeding it.

Are my confidential PDF documents safe?

100% safe! Unlike other websites that upload your files to remote servers, IMGFixy performs all rendering, optimization, and compression directly inside your web browser using WebAssembly and Web Workers. Your files never touch our servers.

How does the Safe Fallback System prevent broken output PDFs?

Every compressed file undergoes an automated structural validation test before download. If an output document fails validation or is unexpectedly larger, the engine automatically attempts lossless structural stream compression. If the document is already maximally compressed, it safely provides the original undamaged file.