100% Client-Side Privacy
Network Uploaded: 0 B
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WebAssembly Edge Engine•Zero Server Uploads

Compress anything.
Down to the exact kilobyte.

The ultimate on-device compression studio for Images, Videos, PDFs, and SVGs. Hit strict portal limits with precision binary search and zero data leaving your machine.

100% Client-Side (0 Bytes Uploaded)
Target KB Binary Search
Batch Multi-Format ZIP
Instant Client-Side Studio

Omni-Format File Compressor

Supports JPEG, PNG, WebP, AVIF, HEIC, MP4, MOV, PDF, and SVG. 100% on-device.

Engineered for Extreme Precision

Next-Generation Architecture.
Zero Servers. Pure On-Device WebAssembly.

Four dedicated client-side compression engines optimized for maximum throughput, visual fidelity, and strict portal limits.

Target-KB Binary Search Engine

Hits government & portal byte limits with zero guess-work

O(log N) Convergence
Select Target Size:≤ 50 KB
15 KB (Gov Form)50 KB (Passport)100 KB (Web)300 KB (Email)
Binary Search Execution Trace: In-Browser Canvas 2D
Guaranteed under 50 KB:
Instant 100% Client-Side Output

100% Zero-Server Privacy Architecture

All bytes stay strictly in your browser RAM

Server Uploads
0.00 KB
100% Sealed Air-Gap
On-Device Engine
Active
WASM + Canvas 2D
Unlike other compression tools that send your sensitive confidential documents, IDs, or videos to cloud servers, WCompress runs 100% in-browser. Even if you turn off your Wi-Fi, the compression executes with zero interruption.

WebAssembly Video Transcoder

Multi-threaded FFmpeg WASM worker compiled with SIMD optimizations. Compresses MP4, MOV, and WebM at up to 80% size savings right inside your browser tab.

Codec:H.264 / AAC FastStart
CRF Range:18 - 32 (Dynamic)
Memory Footprint:Direct SharedArrayBuffer

PDF Object Stream Stripper

Deconstructs PDF object tables, flattens unreferenced metadata, deduplicates embedded font definitions, and compacts cross-reference dictionaries.

  • Full compliance with PDF 1.4 - 2.0 standards
  • Removes hidden metadata & tracking tags
  • Flattens forms for ATS and job portal compatibility

SVG Vector Path Optimizer

Cleans bloated design editor exports (Figma, Illustrator, Inkscape). Trims floating-point coordinate precision, collapses namespaces, and removes comments.

d="M 12.345678 45.890123 C 89.12345..."
d="M12.35 45.89C89.12..."
-65% smaller vector payload
Knowledge Base

Frequently Asked Questions

Everything you need to know about our private on-device compression engine.

WCompress leverages modern web standards including HTML5 Canvas 2D, OffscreenCanvas, and WebAssembly (FFmpeg WASM). When you select a file, your browser processes the raw binary data in local RAM. Zero bytes are transmitted to any server or cloud API.

Ready to compress files with zero limits?

Experience the speed and security of 100% on-device WebAssembly file processing.

Start Compressing Now