cnvrt.to • 100% Client-Side WebAssembly Pipeline

Instant conversions.
Zero latency. 100% in your RAM.

The developer-grade WebAssembly converter. Zero server uploads, instant batch processing, and 100% confidential.

Drop files here for instant RAM conversion

Or click to select files. 100% private, executed locally in browser WebAssembly.

0 Cloud Egress WebAssembly V8 Parallel Batch
Popular WASM Pipelines (HEIC, PDF, Audio & Data)
HEIC → JPGPDF → WordMP4 → MP3PNG → WebPCSV → ExcelJPG → PNGExcel → CSVPNG → Favicon
WebAssembly Utility Matrix

Client-Side WASM Workspaces: Merge PDF, HEIC to JPG & Audio Stripper

Everything executes 100% inside your browser memory. Zero queues, zero data caps, 0 cloud storage.

PDF Engine (ISO 32000-2)Launch Merger

Merge PDF Documents in Local RAM

Concatenate multiple PDF streams into an optimized single document with instant client-side page rendering and re-ordering.

Interactive Live Preview:0ms Latency
1
dataset_q1.pdf
2
benchmark_final.pdf
3
rfc_spec_2026.pdf
Apple Photos WASM

HEIC to JPG Converter

Decode Apple iOS HEIC/HEIF camera photos into standard JPEG without compression artifacts.

Quantization Quality:85%
CompressedLossless
Convert HEIC
Vector Geometry

Rotate & Split PDF

Extract page ranges or apply matrix 90° orientation transformations instantly.

0°
Hardware Audio TranscoderOpen Extractor

One-Click Video to MP3 Audio Extractor

Demux audio streams from MP4, WebM, and MOV containers directly on your CPU using browser Web Audio codecs.

4k_stream_capture.mp4

Transcodes to 320kbps Lossless MP3 / WAV

Complete Zero-Knowledge Architecture

Zero Server Egress: 100% Client-Side Private Transcoding

Standard converters push your private documents, financial models, and photos to remote servers. cnvrt.to compiles processing engines directly into WebAssembly (WASM), running strictly in your browser memory.

  • 0.00 KB network payload: No cloud compute, no server logs, 0 telemetry.
  • Air-gap capable: Disconnect WiFi and the converter continues to run.
  • V8 Memory Sandbox: Hardware execution isolated from operating system risk.
cnvrt::telemetry_guard
Active Guard

Network Egress Payload:0.00 KB

Remote Cloud Transmissions:0 Requests

Execution Runtime:Client WebAssembly (WASM SIMD)

Memory Sandboxing:Browser Isolated V8 Heap

Local RAM only Offline Capable

0ms Network Latency

No uploading or downloading file payloads over network pipes. Transcoding starts immediately inside local V8 memory.

0 Server Retention

Medical scans, financial spreadsheets, raw camera files, and legal contracts never touch any remote cloud server.

Multi-File Batch Queue

Process unlimited files in parallel and download all completed assets packed directly into a single compressed ZIP archive.

Hardware-Accelerated WASM

Compiled Rust, C++, and WebAssembly modules run with direct multithreaded SIMD instructions on your local CPU.