v0.1 · villejuif sector

EFREI
//APP

A free set of fast, private student tools — image editing, PDF compression, metadata stripping, hashing, OCR, transcription, text-to-speech, and more. Every tool runs on a single homelab pod. Your laptop stays cold; nothing is stored; no accounts, no trackers.

tools: 23 online
runs on: wasmtime + k3s
privacy: in-memory only
source: open

Tools

23 available

Remove background

Alpha-cut an image with BRIA RMBG 2.0. Any format in, any format out.

4× Real-ESRGAN with photo / anime / quality / fast modes.

Any image format to any image format — PNG · WebP · AVIF · JXL · SVG · more.

Shrink images via AVIF or WebP with a quality slider.

Enlarge canvas with a colour fill and 9-way anchor.

Shrink canvas to a sub-rect via coords or a 9-way anchor.

Proportional resize with Lanczos / Catmull / triangle / nearest.

Automatically detect and blur faces in a photo.

image · inspect→

Read every EXIF / XMP / IPTC tag a file carries.

Wipe EXIF / XMP / doc authorship / audio tags — 24+ formats.

Shrink PDFs with light / balanced / aggressive presets.

Merge and split PDFs without uploading to a third party.

BLAKE3 / BLAKE2 / SHA-2 / SHA-3 / Keccak + legacy MD4 / MD5 / SHA-1.

Generate strong passwords or check a password's strength.

Convert between base16 / base32 / base58 / base64 / base64url.

Live regex matcher with capture groups and flags.

Turn an image into ASCII or a greeting into a figlet banner.

Palette explorer, contrast checker, and WCAG report.

Generate QR codes for a URL or arbitrary text.

Format any source as APA / MLA / Chicago / Harvard / IEEE.

Extract text from an image or scanned PDF.

Speech-to-text on audio or video with Whisper.

Render any text as natural audio.

About

how this works

efrei.app is an unofficial, free student toolkit for people studying at EFREI (or anywhere else — nothing here is gated). Every tool is served from a single homelab k3s pod running a Rust WASI 0.3 component behind wasmtime serve, plus a small native sidecar for metadata-stripping across 24+ file formats.

Your device does nothing. No WebAssembly shipped to the browser, no local GPU inference — you upload, the pod computes, you download. Laptop battery and CPU untouched.

No tracking, no accounts, no storage. Files are processed in memory and discarded when the response is written. No cookies, no analytics, no fingerprinting, no logs beyond standard HTTP access lines.

Not affiliated with EFREI or Galileo Global Education. This is an unofficial parody project, built and run by a student.