About PiSpace Tools

Most online converters upload your files to a server, keep them for a while and show adverts while you wait. PiSpace Tools takes a different approach: modern browsers can decode video, compress images, edit PDFs and encrypt data on their own, so every tool here runs on your device.

How it works

• Images use your browser’s image decoders plus the open-source Squoosh codecs (MozJPEG, WebP, AVIF, OxiPNG) compiled to WebAssembly.
• PDF tools use pdf-lib to edit documents and PDF.js to display them.
• Video and audio tools use WebCodecs, the hardware-accelerated media engine built into current browsers, through the Mediabunny library.
• Text recognition uses Tesseract, downloaded once from this site.
• Privacy tools use the Web Crypto API built into your browser.

Large engines are only downloaded when you open the tool that needs them, and are then cached for offline use.

Part of PiSpace

PiSpace is a family of free, non-commercial sites for researching places and data. The PiSpace data tools turn figures from Open Data, Costs, Maps, Sky, Air and Crypto into quick calculators.

Limits

Because work happens on your device, very large files (for example videos over 2 GB) depend on your device’s memory and speed. Results are provided as-is; keep your originals until you have checked them.