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For engineers, designers, and anyone handling CAD or PDF files, TaskNinja delivers free browser‑based viewers and tools that never upload your data. It supports STEP, DWG, DGN, STAAD and more, plus PDF compress, merge, split and unlock, all without sign‑up or watermarks. Built to keep work local and simple. I’d love your thoughts on the experience 😊
- Free browser‑based file viewers and tools
- No installation, sign‑up, or watermark required
- All processing runs locally in WebAssembly/Web Workers
- Your files never leave the device – full privacy
- Uses open‑source engines like LibreDWG and QPDF
TaskNinja provides free, browser-based CAD, engineering, PDF and data file viewers that run locally with no upload or sign-up required.
- for
- Engineers, designers and analysts who need to view or convert CAD, PDF and data files without installing software.
- pricing
- free
Key features
- WebAssembly viewers — Runs open-source file readers compiled to WebAssembly for near-native speed in the browser.
- No upload, local processing — All files are read and saved locally; nothing is sent to a server.
- Wide format support — Views STEP/IGES, DWG/DXF, DGN, STAAD .std, Prism, Sketch, OneNote, JMP, SPV, Mathcad, OLM and more.
- Export options — Save viewed files as PNG, PDF, STL, CSV, Excel or other common formats.
- PDF tools — Compress, merge, split, rotate, protect and convert PDFs entirely in the browser.
- Mobile friendly — All tools work on Android and iPhone browsers.
Use cases
- Open a DWG drawing on a laptop without AutoCAD to measure dimensions and export a PNG.
- Convert a STEP model to STL for 3D printing directly in the browser.
- Compress a large PDF to under 200 KB before emailing it from a phone.
- View a Prism .prism project and export the data tables to Excel for analysis.
TaskNinja FAQ
How can I open a DWG file without AutoCAD?+
Use the TaskNinja DWG viewer, which reads DWG/DXF in the browser via LibreDWG and lets you pan, zoom, toggle layers and export PNG or PDF.
Are my files uploaded to your server?+
No. All processing happens locally in the browser using WebAssembly and Web Workers; files never leave your device.
Is TaskNinja really free?+
Yes. There is no sign-up, no watermark and no paid plan; ads support the service.
Can I use TaskNinja on a phone?+
Yes. All tools work in mobile browsers on Android and iPhone, though very large CAD files run faster on a computer.
How do I compress a PDF to a specific size?+
Open the Compress PDF tool, add the file, choose a target size (e.g., 200 KB) or quality preset, and the compression runs locally.
Summarized by DevHunt from taskninja.ai · Nov 12, 2026. Details may change; check the official site.
