Private file tools, built for the browser

Supported formats.
One clear workflow.

Convert, compress, inspect, and export files with batch controls and verified results—without surrendering supported files to a remote service.

✓ No signup✓ No watermark✓ Per-file outputs
100% private for supported formats

Convert supported files

Runs on your device

Drop supported files here

Batch files can each use a different output. Nothing uploads for local conversions.

Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.
01

Local by default

Supported files are encoded in browser memory, not uploaded.

02

Validated outputs

Real signatures are checked before downloads are enabled.

03

Mixed batch queue

Give every file its own output and keep successful results.

How a browser-local converter actually works

Most online converters are upload services: your file travels to a server, is processed there, and a download link comes back. Novus Convert takes the opposite approach. The conversion engines — an FFmpeg build for audio and video (including GIF/APNG animation routes), LibRaw for camera RAW files, pdf.js and pdf-lib for documents, SheetJS for spreadsheet interchange, libarchive for RAR and 7-Zip, Open CASCADE for CAD geometry, @jsquash for AVIF/JXL, and hand-written encoders for images and meshes — are compiled to WebAssembly and run inside your browser tab. The file you pick never crosses the network, which is why there is no upload progress bar, no file-size pricing tier, and no server queue.

Every export is verified before the download unlocks: the engine checks that the output bytes carry the real signature of the format you asked for, so a failed encode can never be saved as a broken file with the right extension. Formats the engines cannot genuinely process are documented as reference guides instead of being offered as fake conversions — the format directory below reflects exactly what runs on your device today.

Format catalog

Check a format before processing

Browse the format directory →
125working inputs
137format pages
Browse every working conversion →

Image

29 listed

Video

19 listed

Audio

16 listed

Document

28 listed

Archive

13 listed

Ebook

9 listed

Vector & CAD

18 listed

Font

5 listed